Water conservancy pipeline repairing device and repairing method

Abstract

The invention provides a water conservancy pipeline repairing device and method, and belongs to the technical field of pipeline repairing equipment. The water conservancy pipeline repairing device comprises a first arc-shaped plate, a second arc-shaped plate and a valve; the first arc-shaped plate and the second arc-shaped plate are respectively provided with a hinging end and a connecting end; the hinged end of the first arc-shaped plate is hinged to the hinged end of the second arc-shaped plate, and the connecting end of the first arc-shaped plate is connected with the connecting end of the second arc-shaped plate through a bolt. The valve is connected to the outer side wall of the first arc-shaped plate; a water passing hole is formed in the first arc-shaped plate; a water bag is arranged at the position, corresponding to the valve, of the inner side wall of the first arc-shaped plate, and an avoiding space used for avoiding the water passing hole is formed in the water bag; a water passing pipe is arranged on the water bag and is detachably connected with the valve; in an initial state, the interior of the water bag is in a negative pressure state, and the valve is in a closed state; through the arrangement, in the bolt tightening process, sprayed water can be reduced, and compared with a repairing mode in the prior art, water resources can be saved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline repair equipment, and in particular relates to a water conservancy pipeline repair device and a repair method. Background Art

[0002] In water conservancy projects, surface water or groundwater is allocated through water conservancy pipes to flow to where it is needed, thereby meeting the demand for water resources. When a water conservancy pipe is damaged, the pressurized water in the water conservancy pipe will spray out from the damaged location. At this time, the damaged location of the water conservancy pipe needs to be repaired.

[0003] In the prior art, two arc plates are sleeved on the water conservancy pipe for repair, and the specific method is: first, the two arc plates are sleeved on the water conservancy pipe, and the positions of the two arc plates are initially fixed by bolts, and the arc plates can slide along the water conservancy pipe at this time; when the arc plates slide to the damaged position of the water conservancy pipe, the arc plates continue to slide, and the arc plates cover the damaged position of the water conservancy pipe; since one of the arc plates is provided with a valve, the valve is in an open state during the sliding process of the arc plates; when the arc plate covers the damaged position of the water conservancy pipe, the water sprayed from the damaged position of the water conservancy pipe will spray out from the valve position of the arc plate, and at this time, the operator tightens the bolts on the two arc plates by tools, can fix the two arc plates on the water conservancy pipe, and then closes the valve to complete the repair of the damaged position of the water conservancy pipe.

[0004] In the above repair method, after the arc plate covers the damaged position of the water pipe, in order to facilitate tightening the bolts and to reduce the spraying of pressurized water from other positions of the arc plate, the pressurized water will continue to spray out from the valve position, which may easily cause a waste of water resources. Summary of the invention

[0005] The embodiments of the present invention provide a water conservancy pipeline repair device and a repair method, which are intended to solve the problem that the repair method in the prior art causes pressurized water to keep spraying out from the valve position, resulting in a waste of water resources.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] Provided is a water conservancy pipeline repair device, comprising:

[0008] The first arc plate and the second arc plate respectively have a hinged end and a connecting end; the hinged end of the first arc plate and the hinged end of the second arc plate are hinged to each other, and the connecting end of the first arc plate and the connecting end of the second arc plate are connected by bolts;

[0009] A valve connected to the outer side wall of the first arc-shaped plate; the first arc-shaped plate has a water hole connected to the valve;

[0010] Among them, a water bag is provided on the inner wall of the first arc-shaped plate at a position corresponding to the valve, and the water bag has an avoidance space for avoiding the water hole; the water bag is provided with a water pipe, and the water pipe is detachably connected to the valve; in the initial state, the interior of the water bag is in a negative pressure state, and the valve is in a closed state.

[0011] In a possible implementation, a placement groove for placing a water bag is provided on the inner side wall of the first arc-shaped plate.

[0012] In a possible implementation, the valve is provided with a quick connector, the water pipe is a hose, and the water pipe is connected to the quick connector;

[0013] The water pipe is connected with an opening and closing valve. Before the water pipe is separated from the quick connector, the opening and closing valve is closed to keep the water bag in a pressure-maintaining state.

[0014] In a possible implementation, an elastic sealing pad is provided on the outer side wall of the water bag. After the water bag is filled with water, the water bag pushes the elastic sealing pad to fill the gap between the first arc plate and the outer peripheral wall of the water conservancy pipeline.

[0015] In a possible implementation, the water through hole has an internal thread, and the water through hole is used to cooperate with the exhaust pipe thread of the exhaust device.

[0016] In a possible implementation, the hinged end of the second arc plate has a slot, and the hinged end of the first arc plate has a protrusion for inserting into the slot, and the position of the protrusion close to the bottom wall of the slot is an arc surface; the second arc plate has a first socket on both sides of the slot position, and the protrusion has a second socket aligned with the first socket, and the first socket and the second socket are plugged into and matched with a rotating shaft.

[0017] In a possible implementation, the connecting end of the first curved plate and the connecting end of the second curved plate respectively have a plurality of through holes along the length direction, and the through holes on the connecting end of the first curved plate correspond one to one with the through holes on the connecting end of the second curved plate;

[0018] When the first curved plate and the second curved plate are sleeved on the water conservancy pipeline, the through hole on the first curved plate is aligned with the through hole on the second curved plate, and the bolt can pass through the connecting end on the first curved plate and the connecting end on the second curved plate and be fixed by a nut.

[0019] Compared with the prior art, the water conservancy pipeline repair device provided by the present invention has the following advantages: when a damaged position appears in the water conservancy pipeline, water in the water conservancy pipeline is sprayed out from the damaged position; the first curved plate and the second curved plate are sleeved on the water conservancy pipeline and initially fixed by bolts; then the first curved plate and the second curved plate are slid to the damaged position of the water conservancy pipeline, and the valve is opened, so that the water sprayed out from the damaged position of the water conservancy pipeline can enter the water bag; after the water pressure in the water bag is stabilized, the water bag fills the gap between the first curved plate and the outer wall of the water conservancy pipeline, and the water bag can play a sealing role at this time. ; By tightening the bolts, the first arc plate and the second arc plate can clamp the water conservancy pipeline; during the tightening process, the water bag is in a pressure-maintaining state, and the water in the water bag can be continuously discharged; after fixing the first arc plate and the second arc plate, close the valve, at this time the water bag is clamped between the first arc plate and the outer wall of the water conservancy pipeline, the water bag can also act as a sealing gasket to improve the sealing effect; through the above-mentioned arrangement of the present application, the sprayed water can be reduced during the tightening of the bolts. Compared with the repair method in the prior art, the present application can save water resources.

[0020] To achieve the above object, another technical solution adopted by the present invention is:

[0021] A water conservancy pipeline repair method is provided, comprising the following steps:

[0022] The first curved plate and the second curved plate are sleeved on the water conservancy pipeline and initially fixed by bolts;

[0023] Slide the first curved plate and the second curved plate along the axial direction until the damaged position of the water conservancy pipeline is located in the avoidance space of the water bag;

[0024] When the valve is opened, water sprayed from the damaged position of the water conservancy pipeline enters the water bag through the valve and the water pipe, and the water bag swells and fills the gap between the first arc plate and the outer wall of the water conservancy pipeline; after the water pressure in the water bag is stabilized, the water pressure in the water bag is the same as the water pressure in the water conservancy pipeline;

[0025] Tighten the bolts on the first curved plate and the second curved plate, so that the first curved plate and the second curved plate clamp the water conservancy pipeline and drain the water in the water bag;

[0026] Close the valve.

[0027] In a possible implementation, when the first curved plate and the second curved plate are initially fixed, the first curved plate and the second curved plate can slide radially along the water conservancy pipeline;

[0028] When the first arc plate and the second arc plate are slid along the axial direction, the second arc plate is first brought into contact with the outer peripheral wall of the water conservancy pipeline, so that a gap is formed between the water bag and the outer peripheral wall of the water conservancy pipeline.

[0029] In a possible implementation, when the water bag is inflated before use, the gas in the water bag is extracted by a vacuum device to put the water bag in a negative pressure state.

[0030] The beneficial effects of the water conservancy pipeline repair method provided by the present invention are the same as the beneficial effects of the repair device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a water conservancy pipeline repair device provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of a water bag portion of a water conservancy pipeline repair device provided by an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of a protrusion of a water conservancy pipeline repair device provided in an embodiment of the present invention.

[0034] Explanation of the reference numerals: 1. first arc-shaped plate; 11. hinged end; 111. slot; 112. protrusion; 113. arc surface; 12. connecting end; 13. water hole; 14. placement slot; 15. rotating shaft; 2. second arc-shaped plate; 3. valve; 4. water bag; 41. avoidance space; 42. water pipe. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] Please also read Figures 1 to 3 , a water conservancy pipeline repair device provided by the present invention is now described. The water conservancy pipeline repair device comprises a first arc plate 1, a second arc plate 2 and a valve 3; the first arc plate 1 and the second arc plate 2 respectively have a hinged end 11 and a connecting end 12; the hinged end 11 of the first arc plate 1 and the hinged end 11 of the second arc plate 2 are hinged to each other, and the connecting end 12 of the first arc plate 1 and the connecting end 12 of the second arc plate 2 are connected by bolts; the valve 3 is connected to the outer wall of the first arc plate 1; the first arc plate 1 has a water hole 13 connected to the valve 3; wherein, the inner wall of the first arc plate 1 is provided with a water bag 4 at a position corresponding to the valve 3, and the water bag 4 has an avoidance space 41 for avoiding the water hole 13; the water bag 4 has a water pipe 42, and the water pipe 42 is detachably connected to the valve 3; in the initial state, the interior of the water bag 4 is in a negative pressure state, and the valve 3 is in a closed state.

[0037] Compared with the prior art, the water conservancy pipeline repair device provided by the present invention has the following advantages: when a damaged position appears in the water conservancy pipeline, water in the water conservancy pipeline is sprayed out from the damaged position; the first curved plate 1 and the second curved plate 2 are sleeved on the water conservancy pipeline and initially fixed by bolts; then the first curved plate 1 and the second curved plate 2 are slid to the damaged position of the water conservancy pipeline, and the valve 3 is opened, so that the water sprayed out from the damaged position of the water conservancy pipeline can enter the water bag 4; after the water pressure in the water bag 4 is stabilized, the water bag 4 fills the gap between the first curved plate 1 and the outer wall of the water conservancy pipeline, and the water bag 4 can play a sealing role at this time. ; By tightening the bolts, the first curved plate 1 and the second curved plate 2 can clamp the water conservancy pipeline; during the tightening process, the water bag 4 is in a pressure-maintaining state, and the water in the water bag 4 can be continuously discharged; after fixing the first curved plate 1 and the second curved plate 2, close the valve 3, at this time, the water bag 4 is clamped between the first curved plate 1 and the outer wall of the water conservancy pipeline, and the water bag 4 can also act as a sealing gasket to improve the sealing effect; through the above-mentioned settings of the present application, the sprayed water can be reduced during the tightening of the bolts. Compared with the repair method in the prior art, the present application can save water resources.

[0038] Exemplarily, the inner peripheral walls of the first curved plate 1 and the second curved plate 2 are both provided with sealing gaskets. When the first curved plate 1 and the second curved plate 2 clamp the water conservancy pipeline, the sealing gasket on the first curved plate 1 presses against the first curved plate 1 and the water conservancy pipeline, and the sealing gasket on the second curved plate 2 presses against the second curved plate 2 and the water conservancy pipeline, thereby playing a sealing role. The sealing gasket on the first curved plate 1 avoids the position of the water bag 4, that is, the sealing gasket on the first curved plate 1 has a through hole for avoiding the water bag 4.

[0039] In some embodiments, Figures 1 to 3 As shown, the valve 3 is provided with a quick connector (not shown in the figure), the water pipe 42 is a hose, and the water pipe 42 is connected to the quick connector; the water pipe 42 is connected to an opening and closing valve (not shown in the figure), and before the water pipe 42 is separated from the quick connector, the opening and closing valve is closed to keep the water bag 4 in a pressure-maintaining state.

[0040] It should be noted that, before use, the valve 3 on the first curved plate 1 is in a closed state, and the on-off valve can be opened at this time; when the damaged position of the water conservancy pipeline is located in the avoidance space 41 of the water bag 4, the valve 3 can be opened to allow water to enter the water bag 4, so that the water bag 4 can seal the gap between the first curved plate 1 and the water conservancy pipeline. After the first curved plate 1 and the second curved plate 2 are fixed to the water conservancy pipeline, the valve 3 is closed, and the on-off valve is closed, and the water pipe 42 can be removed from the quick connector at this time; after the water pipe 42 is separated from the quick connector, the water bag 4 is in a pressure-maintaining state and can still play a sealing role.

[0041] When water needs to be taken from the valve 3, the water pipe 42 can be separated from the valve 3 without affecting water intake.

[0042] In some embodiments, Figures 1 to 3 As shown, a placement groove 14 for placing the water bag 4 is provided on the inner side wall of the first arc-shaped plate 1 .

[0043] It should be noted that, by providing a placement groove 14 on the inner side of the first curved plate 1, the water bag 4 can be placed in the placement groove 14 to provide an installation space for the water bag 4; after the water bag 4 is filled with water, one side of the water bag 4 abuts against the bottom wall of the placement groove 14, and the other side of the water bag 4 abuts against the water pipe; through the above-mentioned arrangement, the connection between the water bag 4 and the inner wall of the first curved plate 1 can be improved, thereby improving the sealing effect.

[0044] In some embodiments, Figures 1 to 3 As shown, an elastic sealing pad is provided on the outer side wall of the water bag 4. After the water bag 4 is filled with water, the water bag 4 pushes the elastic sealing pad to fill the gap between the first arc plate 1 and the outer peripheral wall of the water conservancy pipeline.

[0045] It should be noted that, by arranging an elastic sealing pad on the outer side wall of the water bag 4, the elastic sealing pad can change with the deformation of the water bag 4; after the water bag 4 is filled with water, the elastic sealing pad can press against the first curved plate 1 and the outer side wall of the water conservancy pipeline to achieve a sealing effect; after the first curved plate 1 and the second curved plate 2 are fixed in position by bolts, the water bag 4 discharges part of the water, at which time the water bag 4 is still in a pressure-maintaining state, and the elastic sealing pad still presses against the first curved plate 1 and the outer side wall of the water conservancy pipeline to achieve the same sealing effect. Therefore, through the above-mentioned arrangement of the present application, in the process of repairing the damaged position of the water conservancy pipeline, the water sprayed can be reduced, which is convenient for saving water resources.

[0046] In some embodiments, Figures 1 to 3 As shown, the water hole 13 has an internal thread, and the water hole 13 is used to cooperate with the thread of the exhaust pipe of the exhaust equipment; the exhaust equipment is a prior art and will not be described in detail here.

[0047] It should be noted that before the water bag 4 is used, when the water bag 4 is not in a negative pressure state, it is connected to the water hole 13 through an exhaust pipe, and the exhaust device is started to extract the air in the water bag 4; then the valve 3 is closed to put the water bag 4 in a negative pressure state; when the first curved plate 1 and the second curved plate 2 are slid to the damaged position of the water conservancy pipeline, the valve 3 is opened to allow water to enter the water bag 4, and then the water bag 4 seals the outer wall of the first curved plate 1 and the water conservancy pipeline; the water sprayed from between the first curved plate 1 and the water conservancy pipeline is reduced, so as to save water resources.

[0048] In some embodiments, Figures 1 to 3As shown, the hinged end 11 of the second arc plate 2 has a slot 111, and the hinged end 11 of the first arc plate 1 has a protrusion 112 for inserting into the slot 111, and the position of the protrusion 112 close to the bottom wall of the slot 111 is an arc surface 113; the second arc plate 2 has a first socket on both sides of the slot 111, and the protrusion 112 has a second socket aligned with the first socket, and the first socket and the second socket are plugged with a rotating shaft 15.

[0049] It should be noted that the second curved plate 2 also has curved surfaces 113 at both ends of the slot 111, which can reduce interference and facilitate the first curved plate 1 and the second curved plate 2 to rotate around the rotating shaft 15; after the rotating shaft 15 is inserted into the first insertion hole and the second insertion hole, the rotating shaft 15 can be fixed on the first curved plate 1, and the rotating shaft 15 can also be fixed on the second curved plate 2; no matter whether the rotating shaft 15 is fixed on the first curved plate 1 or the second curved plate 2, the first curved plate 1 and the second curved plate 2 can rotate relative to the rotating shaft 15; taking the rotating shaft 15 fixed on the first curved plate 1 as an example, the outer wall of the protrusion 112 has a threaded hole connected to the second insertion hole, and after the rotating shaft 15 is inserted into the second through hole, by tightening the bolts in the threaded holes, the bolts can be pressed against the rotating shaft 15, thereby fixing the rotating shaft 15 relative to the protrusion 112. When the rotating shaft 15 is fixed on the second curved plate 2, it can also be tightened by bolts, which will not be repeated here.

[0050] In some embodiments, Figures 1 to 3 As shown, the connecting end 12 of the first arc plate 1 and the connecting end 12 of the second arc plate 2 respectively have a plurality of through holes along the length direction, and the through holes on the connecting end 12 of the first arc plate 1 correspond one to one with the through holes on the connecting end 12 of the second arc plate 2; wherein, when the first arc plate 1 and the second arc plate 2 are sleeved on the water conservancy pipeline, the through holes on the first arc plate 1 are aligned with the through holes on the second arc plate 2, and the bolts can pass through the connecting end 12 on the first arc plate 1 and the connecting end 12 on the second arc plate 2 and be fixed by nuts.

[0051] It should be noted that when the first curved plate 1 and the second curved plate 2 are initially fixed, the bolts and nuts are not tightly matched. At this time, the first curved plate 1 and the second curved plate 2 can move radially. When the first curved plate 1 and the second curved plate 2 are axially slid along the water conservancy pipeline, the second curved plate 2 can slide against the side wall of the water conservancy pipeline, which can increase the distance between the water bag 4 and the outer wall of the water conservancy pipeline and reduce the friction between the water bag 4 and the outer wall of the water conservancy pipeline. After the first curved plate 1 and the second curved plate 2 slide into place, by tightening the bolts, the first curved plate 1 and the second curved plate 2 can clamp the water conservancy pipeline to complete the repair process; after the repair is completed, the valve 3 on the first curved plate 1 is closed.

[0052] Based on the same inventive concept, the present application also provides a repair method, comprising the following steps:

[0053] The first curved plate 1 and the second curved plate 2 are sleeved on the water conservancy pipeline and initially fixed with bolts;

[0054] Slide the first curved plate 1 and the second curved plate 2 along the axial direction until the damaged position of the water conservancy pipeline is located in the avoidance space 41 of the water bag 4;

[0055] Open the valve 3, and the water sprayed from the damaged position of the water conservancy pipeline enters the water bag 4 through the valve 3 and the water pipe 42, and the water bag 4 swells and fills the gap between the first arc plate 1 and the outer wall of the water conservancy pipeline; after the water pressure in the water bag 4 is stabilized, the water pressure in the water bag 4 is the same as the water pressure in the water conservancy pipeline;

[0056] Tighten the bolts on the first curved plate 1 and the second curved plate 2 so that the first curved plate 1 and the second curved plate 2 clamp the water conservancy pipeline and drain the water in the water bag 4;

[0057] Close valve 3.

[0058] Exemplarily, when the first curved plate 1 and the second curved plate 2 are initially fixed, the first curved plate 1 and the second curved plate 2 can slide radially along the water conservancy pipe; when sliding the first curved plate 1 and the second curved plate 2 along the axial direction, the second curved plate 2 is first brought into contact with the outer peripheral wall of the water conservancy pipe so that there is a gap between the water bag 4 and the outer peripheral wall of the water conservancy pipe.

[0059] Through the above arrangement, when the first arc plate 1 and the second arc plate 2 are slid, the distance between the water bag 4 and the outer wall of the water conservancy pipeline can be increased, thereby reducing the friction between the water bag 4 and the outer wall of the water conservancy pipeline.

[0060] Exemplarily, when the water bag 4 is inflated before use, the gas in the water bag 4 is extracted by a vacuum device to put the water bag 4 in a negative pressure state.

[0061] As for the specific air extraction method, the air extraction pipeline of the air extraction device can be connected to the water hole 13 of the first arc-shaped plate 1 , and then the air extraction device is started to extract the air in the water bag 4 .

[0062] Exemplarily, before the first arc-shaped plate 1 is sleeved on the water conservancy pipeline, sealant is applied on the outer wall of the water bag 4; through the above arrangement, the sealing effect of the water bag 4 can be improved.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water conservancy pipeline repair device, characterized in that: include: The first arc plate and the second arc plate respectively have a hinged end and a connecting end; the hinged end of the first arc plate and the hinged end of the second arc plate are hinged to each other, and the connecting end of the first arc plate and the connecting end of the second arc plate are connected by bolts; A valve connected to the outer side wall of the first arc-shaped plate; the first arc-shaped plate has a water hole connected to the valve; Among them, a water bag is provided on the inner wall of the first arc-shaped plate at a position corresponding to the valve, and the water bag has an avoidance space for avoiding the water hole; the water bag is provided with a water pipe, and the water pipe is detachably connected to the valve; in the initial state, the interior of the water bag is in a negative pressure state, and the valve is in a closed state.

2. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: The inner side wall of the first arc-shaped plate is provided with a placement groove for placing the water bag.

3. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: The valve is provided with a quick connector, the water pipe is a hose, and the water pipe is connected to the quick connector; The water pipe is connected with an opening and closing valve. Before the water pipe is separated from the quick connector, the opening and closing valve is closed to keep the water bag in a pressure-maintaining state.

4. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: An elastic sealing pad is arranged on the outer side wall of the water bag. After the water bag is filled with water, the water bag pushes the elastic sealing pad to fill the gap between the first arc plate and the outer peripheral wall of the water conservancy pipeline.

5. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: The water through hole has an internal thread, and the water through hole is used to cooperate with the exhaust pipe thread of the exhaust equipment.

6. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: The hinged end of the second arc plate has a slot, and the hinged end of the first arc plate has a protrusion for inserting into the slot, and the position of the protrusion close to the bottom wall of the slot is an arc surface; the second arc plate has a first socket on both sides of the slot position, and the protrusion has a second socket aligned with the first socket, and the first socket and the second socket are plugged into and matched with a rotating shaft.

7. A water conservancy pipeline repair device as claimed in claim 1, characterized in that: The connecting end of the first arc-shaped plate and the connecting end of the second arc-shaped plate respectively have a plurality of through holes along the length direction, and the through holes on the connecting end of the first arc-shaped plate correspond to the through holes on the connecting end of the second arc-shaped plate one by one; When the first curved plate and the second curved plate are sleeved on the water conservancy pipeline, the through hole on the first curved plate is aligned with the through hole on the second curved plate, and the bolt can pass through the connecting end on the first curved plate and the connecting end on the second curved plate and be fixed by a nut.

8. A repair method for a water conservancy pipeline using the water conservancy pipeline repair device according to any one of claims 1 to 7, characterized in that: The following steps are involved: The first curved plate and the second curved plate are sleeved on the water conservancy pipeline and initially fixed by bolts; Slide the first curved plate and the second curved plate along the axial direction until the damaged position of the water conservancy pipeline is located in the avoidance space of the water bag; When the valve is opened, water sprayed from the damaged position of the water conservancy pipeline enters the water bag through the valve and the water pipe, and the water bag swells and fills the gap between the first arc plate and the outer wall of the water conservancy pipeline; after the water pressure in the water bag is stabilized, the water pressure in the water bag is the same as the water pressure in the water conservancy pipeline; Tighten the bolts on the first curved plate and the second curved plate, so that the first curved plate and the second curved plate clamp the water conservancy pipeline and drain the water in the water bag; Close the valve.

9. A repair method according to claim 8, characterized in that: When the first curved plate and the second curved plate are initially fixed, the first curved plate and the second curved plate can slide radially along the water conservancy pipeline; When the first arc plate and the second arc plate are slid along the axial direction, the second arc plate is first brought into contact with the outer peripheral wall of the water conservancy pipeline, so that a gap is formed between the water bag and the outer peripheral wall of the water conservancy pipeline.

10. A repair method according to claim 8, characterized in that: When the water bag is inflated before use, the gas in the water bag is extracted through a vacuum device to put the water bag in a negative pressure state.

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