Quick plugging device for heat supply pipeline repair

Abstract

The application provides a heat supply pipeline emergency repair quick plugging device, and belongs to the technical field of pipeline plugging. The device comprises a pipeline and a plugging mechanism located in the pipeline. The plugging mechanism can be inflated to press the inner wall of the pipeline. The plugging mechanism is located on one side of the pipeline water source and is connected with a pre-positioning mechanism. The outer end of the pre-positioning mechanism is in contact with the side wall of the pipeline. The pre-positioning mechanism is used to drive the plugging mechanism to move towards the inner wall of the pipeline in one direction. The plugging mechanism is inflated to press the side wall of the pipeline after the inside of the plugging mechanism is filled with fluid, thereby blocking the flow of liquid in the pipeline and achieving plugging. After the pipeline repair is completed, the one-way locking element in the pre-positioning mechanism increases the resistance when the plugging mechanism moves outward, thereby achieving the pre-fixing of the plugging mechanism when it moves towards the pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline plugging, in particular to a quick plugging device for heating pipeline repair. BACKGROUND

[0002] At present, welding is generally used in heating pipeline repair, which adopts cutting of the damaged pipe section or the whole pipe, and replacement of the new pipe section by welding. This method is suitable for all leakage conditions, especially in the case of more scattered leakage points or serious corrosion of the original pipeline, and it is almost the only way to be used.

[0003] In the prior art, the pipeline and the accumulated water outside the pipeline need to be emptied before welding, and there is a risk of electric shock due to the presence of accumulated water on site. The welding method is time-consuming and relatively complicated to operate, and is very sensitive to water and environmental humidity. Therefore, the welding method has three problems in the repair process: first, since the heating pipeline is long, a large amount of time is needed for drainage before welding, especially for large diameter pipelines, the drainage time accounts for more than 70% of the overall repair time, directly affecting the efficiency of pipeline repair, thereby affecting the heating experience of residents and easily causing dissatisfaction of residents; second, a large amount of hot water is discharged from the pipeline, which needs to be replenished and heated after repair, not only wasting valuable water resources and energy, but also making the repair cost high; third, a large amount of hot water discharged from the heating pipeline during repair can greatly increase the water content of the soil around the construction site, easily forming a large-scale water pit, thereby possibly causing ground subsidence and safety hazards. Therefore, the present application provides a quick plugging device for heating pipeline repair to meet the needs. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a quick plugging device for heating pipeline repair to solve the problem of long existing heating pipeline, which requires a large amount of time for drainage before welding, and also wastes valuable water resources and energy.

[0005] To solve the above technical problems, the present application provides the following technical solutions:

[0006] The quick plugging device for heating pipeline repair comprises a pipeline and a plugging mechanism located in the pipeline, the plugging mechanism can be inflated by filling fluid to press the inner wall of the pipeline, the plugging mechanism comprises a center pipe with a water passing hole, rubber sleeves are fixedly connected to both sides of the center pipe through flanges, a middle part of the flange located on one side of the pipeline break is fixedly connected with a pressing port penetrating through the center pipe and provided with a valve, and a lifting ring is fixedly installed on the flange bolt.

[0007] Preferably, the plugging mechanism is further connected with a pre-positioning mechanism on one side of the pipeline water source, the outer end of the pre-positioning mechanism is in contact with the side wall of the pipeline, and the pre-positioning mechanism is used to drive the plugging mechanism to move unidirectionally towards the inner wall of the pipeline.

[0008] Preferably, the pre-positioning mechanism comprises a mounting block connected with the flange, a plurality of mounting holes are formed in the mounting block, the mounting block is fixed with the flange through the plurality of mounting holes, bolts and nuts, and the outer side wall of the mounting block is connected with a guide assembly around.

[0009] Preferably, the guide assembly comprises a fixed shaft fixedly connected with the mounting block, a rotating frame is rotatably connected to the outer side wall of the fixed shaft, the end of the rotating frame away from the fixed shaft is divided towards two sides, a connecting rod is fixedly connected to the side of the rotating frame away from the mounting block, a rotating rod is rotatably connected to the end of the connecting rod away from the rotating frame, a unidirectional locking piece is connected to the other side of the rotating rod, and a spring is fixedly connected between the connecting rod and the rotating rod.

[0010] Preferably, the end of the rotating frame away from the flange is fixedly connected with an abutting block, the other end of the rotating frame is fixedly connected with a pressing plate, and the side wall of the mounting block at the fixed shaft is fixedly connected with a limiting frame.

[0011] Preferably, the rotating rod is provided with a movable groove at the rotating position of the connecting rod, the side of the connecting rod away from the rubber sleeve is provided with an arc groove, and the rotating rod is fixedly connected with an arc part matched with the arc groove.

[0012] Preferably, the unidirectional locking piece comprises a rubber roller rotatably connected with the rotating rod, a fixed shaft in the rubber roller penetrates through one side of the rotating rod and is fixedly connected with a ratchet wheel, and one side of the rotating rod is rotatably connected with a pawl matched with the ratchet wheel.

[0013] Preferably, the outer side wall of the rotating rod is fixedly connected with a constraint frame, and a spring piece in a Z shape is arranged between the constraint frame and the pawl and used to drive the pawl to rotate towards the ratchet wheel.

[0014] Preferably, the constraint frame is in the shape of a hook, and the side of the rotating rod away from the mounting block is fixedly connected with a convex part.

[0015] Preferably, the outer side wall of the mounting block is uniformly provided with notches, and the mounting block is fixedly connected with a reinforcing rib between two adjacent mounting holes.

[0016] Compared with the prior art, the present application has at least the following beneficial effects:

[0017] The sealing mechanism is moved to one end of the water source of the pipeline, and if the water source pushes the sealing mechanism and the pre-positioning mechanism outward, the friction between the outer end of the pre-positioning mechanism and the inner wall of the pipeline offsets the force when the sealing mechanism and the pre-positioning mechanism are pushed outward, so that the sealing mechanism is pushed into the pipeline, and the subsequent sealing of the pipeline after the sealing mechanism is pressed is facilitated, the labor intensity during sealing is reduced, and the internal part of the sealing mechanism is filled with fluid, and the sealing mechanism is expanded to press the side wall of the pipeline, thereby blocking the flow of liquid in the pipeline, thereby achieving sealing, after the pipeline repair is completed, the hole reserved on the pipeline of the repair part is passed through the water suction pipe, the rubber sleeve is pumped through the pressing port, the pressure in the rubber sleeve is reduced, the volume of the rubber sleeve is reduced, and the rubber sleeve is separated from the inner wall of the pipeline, and then the device is taken out for recycling through the reserved opening at the top end of the pipeline, so that the pipeline is unobstructed, and the device is also convenient for collecting and recycling.

[0018] The pre-positioning mechanism is provided with a one-way locking part inside for tightly adhering to the inner side wall of the pipeline, the one-way locking part is used to drive the sealing mechanism to move unidirectionally along the inner side wall of the pipeline, the rotating rod is provided with a movable groove at the rotating position of the connecting rod, the connecting rod is provided with an arc groove on the side away from the rubber sleeve, the rotating rod is fixedly connected with an arc part matched with the arc groove, the movable groove is used to avoid interference between the rotating rod and the connecting rod during rotation, a spring is fixedly connected between the connecting rod and the rotating rod, the spring is used to pull the connecting rod and the spring, so that the arc part on the rotating rod is clamped into the arc groove of the connecting rod, when the sealing mechanism slowly moves towards the inside of the pipeline, the sealing mechanism continues to move towards the inside of the pipeline, the rotating rod is in contact with the inside of the pipeline, so that the connecting rod and the rotating rod relatively rotate, and can move towards the inside of the pipeline under the action of the one-way locking part, if the sealing mechanism moves outward along the inner side wall of the pipeline, the arc part and the arc groove abut each other, blocking the rotating rod from continuing to rotate towards the side of the rubber sleeve, and then the one-way locking part tightly adheres to the inner side wall of the pipeline, the one-way locking part increases the resistance when the sealing mechanism moves outward, and the pre-fixing when the sealing mechanism moves towards the inside of the pipeline is realized.

[0019] The rubber roller, the ratchet and the pawl are provided, the outer side wall of the rubber roller is provided with a plurality of symmetrically distributed grooves for increasing the friction when contacting with the pipeline, the water in the pipeline contacts with the rubber roller, and the friction force when the rubber roller contacts with the side wall of the pipeline is increased, the ratchet and the pawl cooperate with each other, so that the rubber roller can only roll unidirectionally, that is, the rubber roller can roll when the sealing mechanism moves towards the inside of the pipeline, and the rubber roller will not roll when the sealing mechanism moves towards the fracture along the pipeline, so as to play a pre-positioning role when the sealing mechanism and the pipeline are used together, the lower end arc part of the constraint frame is used to limit the pawl, so as to avoid that the angle of the pawl rotating is too large, and the convex part is fixedly connected to the side of the rotating rod away from the mounting block. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings incorporated herein and forming a part of the specification, illustrate embodiments of the present disclosure and together with the description, further serve to explain the principles of the present disclosure and to enable a person skilled in the relevant art to make and use the present disclosure.

[0021] Figure 1 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0022] Figure 2 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0023] Figure 3 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0024] Figure 4 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0025] Figure 5 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism; Figure 4 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0026] Figure 6 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0027] Figure 7 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism; Figure 6 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism;

[0028] Figure 8 Schematic diagram of the three-dimensional structure for cooperation of the plugging mechanism, the pipeline and the pre-positioning mechanism.

[0029] [REFERENCE NUMERALS]

[0030] 1. plugging mechanism; 2. pipeline; 3. pre-positioning mechanism; 4. rubber sleeve; 5. flange; 6. pressing port; 7. lifting ring; 8. center pipe; 9. mounting block; 10. notch; 11. guide assembly; 12. reinforcing rib; 13. mounting hole; 14. abutting block; 15. pressing plate; 16. limiting frame; 17. fixing shaft; 18. rotating frame; 19. connecting rod; 20. spring; 21. rotating rod; 22. one-way locking piece; 23. rubber roller; 24. ratchet; 25. pawl; 26. constraint frame; 27. elastic sheet; 28. protrusion; 29. movable groove; 30. arc portion; 31. arc groove.

[0031] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in the specific structures, devices and environments, and those skilled in the art can adjust or modify these devices and environments according to specific needs, and the adjustment or modification still includes in the scope of the appended claims. DETAILED DESCRIPTION

[0032] The heat supply pipeline emergency repair quick plugging device provided by the present application will be described in detail below in combination with the drawings and specific embodiments. It should be noted here that in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0033] It should be noted that in the specification, "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the described embodiments can include a specific feature, structure or property, but not necessarily every embodiment includes the specific feature, structure or property. In addition, when a specific feature, structure or property is described in combination with an embodiment, it should be within the knowledge of those skilled in the related art to realize this feature, structure or property in combination with other embodiments (whether or not explicitly described).

[0034] Generally, the terms can be understood at least in part from the context in which they are used. For example, depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular or can be used to describe combinations of features, structures, or characteristics, in the plural, without necessarily dictating whether any such feature, structure, or characteristic is required, desired, or necessary only once, or some multiple thereof. Additionally, the term "based on" can be understood as not necessarily requiring a set of factors to be exclusive of other potential factors.

[0035] It can be understood that the meanings of "on", "above", and "over" in the present disclosure should be interpreted in the broadest way, so that "on" not only means "directly on" something, but also includes the meaning of "on" something with intervening features or layers therebetween, and "above" or "over" not only means the meaning of "above" or "over" something, but also can include the meaning of "above" or "over" something without intervening features or layers therebetween.

[0036] Moreover, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0037] As shown in Figure 1 The embodiment of the present application provides a heat supply pipeline emergency repair quick plugging device, which comprises a pipeline 2 and a plugging mechanism 1 located in the pipeline 2. The plugging mechanism 1 can be inflated by filling fluid and press the inner wall of the pipeline 2. When the inside of the plugging mechanism 1 is filled with fluid, the plugging mechanism 1 is inflated to press the side wall of the pipeline 2, thereby blocking the liquid flow in the pipeline 2, achieving plugging and facilitating subsequent maintenance. The plugging mechanism 1 located on one side of the water source of the pipeline 2 is also connected with a pre-positioning mechanism 3. The outer end of the pre-positioning mechanism 3 is in contact with the side wall of the pipeline 2. The pre-positioning mechanism 3 is used to drive the plugging mechanism 1 to move towards the inner wall of the pipeline 2 in one direction. When the staff sends the connected plugging mechanism 1 and pre-positioning mechanism 3 into the pipeline 2, the plugging mechanism 1 is slowly pushed to move into the pipeline 2. In the process, the plugging mechanism 1 and the pre-positioning mechanism 3 move towards the end of the pipeline 2 away from the water source. If the water source pushes the plugging mechanism 1 and the pre-positioning mechanism 3 outwards, the friction between the outer end of the pre-positioning mechanism 3 and the inner wall of the pipeline 2 can offset the force when the plugging mechanism 1 and the pre-positioning mechanism 3 are pushed outwards, so that the staff can push the plugging mechanism 1 into the pipeline 2, and the plugging mechanism 1 can be pressed in the pipeline 2 for subsequent plugging of the pipeline 2.

[0038] As an embodiment in the present embodiment, as shown in Figure 2 and Figure 3 The plugging mechanism 1 comprises a center pipe 8 with a water passing hole. The two sides of the center pipe 8 are fixedly connected with a rubber sleeve 4 through flanges 5. The middle part of the flange 5 located on one side of the pipeline 2 fracture is fixedly connected with a pressing port 6 which is mutually penetrated with the center pipe 8 and has a valve. The pressing port 6 facilitates the staff to press water, increases the pressure in the rubber sleeve 4, makes it expand and press the inner wall of the pipeline 2, thereby plugging the pipeline 2 and blocking the water in the pipeline 2. Then the pipeline 2 is welded and repaired. The flange 5 is bolted and fixedly installed with a lifting ring 7. The lifting ring 7 facilitates the staff to pull the plugging mechanism 1 with a rope. After the pipeline 2 is repaired, the pumping pipe is passed through the reserved hole on the pipeline 2 of the repair part, the water in the rubber sleeve 4 is pumped through the pressing port 6, the pressure in the rubber sleeve 4 is reduced, the volume of the rubber sleeve 4 is reduced and separated from the inner wall of the pipeline 2, and then the completed device is taken out through the reserved opening at the top end of the pipeline 2 for recycling.

[0039] By setting the plugging mechanism 1, the plugging mechanism 1 and the pre-positioning mechanism 3 are moved towards one end of the outflow water source of the pipeline 2, if the water source pushes the plugging mechanism 1 and the pre-positioning mechanism 3 outwards, the force when the plugging mechanism 1 and the pre-positioning mechanism 3 are pushed outwards is offset by the friction between the outer end of the pre-positioning mechanism 3 and the inner wall of the pipeline 2, so that the staff can push the plugging mechanism 1 into the pipeline 2, and the subsequent plugging of the pipeline 2 after the plugging mechanism 1 is pressed is facilitated, the labor intensity during plugging is reduced, and after the inside of the plugging mechanism 1 is filled with fluid, the plugging mechanism 1 is expanded to press the side wall of the pipeline 2, thereby blocking the flow of liquid in the pipeline 2, thereby achieving plugging, after the pipeline 2 is repaired, the reserved hole on the pipeline 2 of the repair part is passed through the water pump, the rubber sleeve 4 is pumped through the pressing port 6, the pressure in the rubber sleeve 4 is reduced, the volume is reduced, and the rubber sleeve 4 is separated from the inner wall of the pipeline 2, then the completed device is taken out for recycling through the reserved opening at the top end of the pipeline 2, the pipeline 2 is unobstructed, and the device is also convenient for collecting and recycling.

[0040] As an embodiment in the present embodiment, Figures 4-6 and Figure 8As shown, the positioning mechanism 3 comprises a mounting block 9 connected with the flange 5, the outer side wall of the mounting block 9 is uniformly provided with a notch 10 for reducing the weight of the mounting block 9, the mounting block 9 is fixedly connected with a reinforcing rib 12 between two adjacent mounting holes 13, the reinforcing rib 12 is used to reduce the weight of the mounting block 9 and also increase the structural strength of the mounting block 9, a plurality of mounting holes 13 are formed in the mounting block 9, the mounting block 9 is fixed with the flange 5 through the mounting holes 13, bolts and nuts, the mounting block 9 is more convenient to be fixed with the flange 5, which is convenient for subsequent disassembly and assembly, the outer side wall of the mounting block 9 and the four sides are connected with a guide assembly 11, the guide assembly 11 comprises a fixed shaft 17 fixedly connected with the mounting block 9, a rotating frame 18 rotatably connected with the outer side wall of the fixed shaft 17, the end of the rotating frame 18 away from the fixed shaft 17 is divided towards both sides, a connecting rod 19 is fixedly connected with the side of the rotating frame 18 away from the mounting block 9, a rotating rod 21 is rotatably connected with the end of the connecting rod 19 away from the rotating frame 18, a one-way locking piece 22 is connected with the other side of the rotating rod 21, the one-way locking piece 22 is used to tightly contact with the inner side wall of the pipeline 2, the one-way locking piece 22 is used to drive the sealing mechanism 1 to move in one direction along the inner side wall of the pipeline 2, the rotating rod 21 is provided with a movable groove 29 at the rotating position of the connecting rod 19, the side of the connecting rod 19 away from the rubber sleeve 4 is provided with an arc groove 31, the rotating rod 21 is fixedly connected with an arc part 30 matched with the arc groove 31, the movable groove 29 is used to avoid the interference between the rotating rod 21 and the connecting rod 19 during rotation, a spring 20 is fixedly connected between the connecting rod 19 and the rotating rod 21, the spring 20 is used to pull the connecting rod 19 and the spring 20, so that the arc part 30 on the rotating rod 21 is clamped into the arc groove 31 of the connecting rod 19, when the sealing mechanism 1 slowly moves into the pipeline 2, the sealing mechanism 1 continues to move into the pipeline 2, the rotating rod 21 collides with the inside of the pipeline 2, so that the connecting rod 19 and the rotating rod 21 relatively rotate, and under the action of the one-way locking piece 22, the connecting rod 19 and the rotating rod 21 can move into the pipeline 2, if the sealing mechanism 1 moves outwards along the inner side wall of the pipeline 2, the arc part 30 and the arc groove 31 abut each other, which blocks the rotating rod 21 from continuing to rotate towards the side of the rubber sleeve 4, and then the one-way locking piece 22 tightly contacts with the inner side wall of the pipeline 2, the one-way locking piece 22 increases the resistance when the sealing mechanism 1 moves outwards, realizes the pre-fixing when the sealing mechanism 1 moves into the pipeline 2, the end of the rotating frame 18 away from the flange 5 is fixedly connected with an abutting block 14, the abutting block 14 is used to abut with the flange 5, to avoid that the rotating frame 18 rotates excessively and cannot tightly contact with the inner wall of the pipeline 2, the other end of the rotating frame 18 is fixedly connected with a pressing plate 15, the two sides of the pressing plate 15 are square-shaped, which is used to increase the impact area of water, to promote the rotating frame 18 to rotate towards the side of the rubber sleeve 4, the side wall of the mounting block 9 and the fixed shaft 17 are fixedly connected with a limiting frame 16, the limiting frame 16 is used to block the rotation of the rotating frame 18, to avoid that the rotating frame 18 rotates excessively and causes water impact,The one-way locking part 22 cannot contact the side wall of the pipeline 2, affecting the effect of pre-fixing.

[0041] By setting the pre-positioning mechanism 3, the one-way locking part 22 in the inside is used to tightly contact the inner side wall of the pipeline 2, the one-way locking part 22 is used to drive the plugging mechanism 1 to move in one direction along the inner side wall of the pipeline 2, the rotating rod 21 is provided with a movable groove 29 at the rotating position of the connecting rod 19, the connecting rod 19 is provided with an arc groove 31 away from the rubber sleeve 4, the rotating rod 21 is fixedly connected with an arc part 30 matched with the arc groove 31, the movable groove 29 is used to avoid the interference between the rotating rod 21 and the connecting rod 19 during rotation, the connecting rod 19 and the rotating rod 21 are fixedly connected with a spring 20, the spring 20 is used to pull the connecting rod 19 and the spring 20, so that the arc part 30 on the rotating rod 21 is clamped into the arc groove 31 of the connecting rod 19, when the plugging mechanism 1 slowly moves towards the inside of the pipeline 2, the plugging mechanism 1 continues to move towards the inside of the pipeline 2, the rotating rod 21 is in contact with the inside of the pipeline 2, so that the connecting rod 19 and the rotating rod 21 relatively rotate, and at the same time, under the action of the one-way locking part 22, the plugging mechanism 1 can move towards the inside of the pipeline 2, if the plugging mechanism 1 moves outwards along the inner side wall of the pipeline 2, the arc part 30 and the arc groove 31 abut each other, blocking the rotating rod 21 from continuing to rotate towards the side of the rubber sleeve 4, and then the one-way locking part 22 is tightly attached to the inner side wall of the pipeline 2, the one-way locking part 22 increases the resistance when the plugging mechanism 1 moves outwards, realizing the pre-fixing when the plugging mechanism 1 moves towards the inside of the pipeline 2.

[0042] As an embodiment in the embodiment, as Figure 7As shown, the one-way locking member 22 comprises a rubber roller 23 rotationally connected with the rotating rod 21, the outer wall of the rubber roller 23 is provided with a plurality of symmetrically distributed grooves for increasing the friction when contacting with the pipeline 2, meanwhile the water in the pipeline 2 contacts with the rubber roller 23 to increase the friction force when the rubber roller 23 contacts with the sidewall of the pipeline 2, the shaft fixed in the middle of the rubber roller 23 penetrates through one side of the rotating rod 21 and is fixedly connected with a ratchet wheel 24, one side of the rotating rod 21 is rotationally connected with a pawl 25 matched with the ratchet wheel 24, the outer wall of the rotating rod 21 is fixedly connected with a restraint frame 26, a spring sheet 27 in Z shape and pushing the pawl 25 to rotate towards the ratchet wheel 24 is installed between the restraint frame 26 and the pawl 25, the pawl 25 is pressed by the spring sheet 27 to make the pawl 25 close to the ratchet wheel 24, which promotes the mutual cooperation between the ratchet wheel 24 and the pawl 25, so that the rubber roller 23 can only roll in one direction, i.e. the rubber roller 23 can roll when the plugging mechanism 1 moves towards the inside of the pipeline 2, and the rubber roller 23 will not roll when the plugging mechanism 1 moves along the pipeline 2 towards the fracture, thereby playing a role of pre-positioning when the plugging mechanism 1 is used in cooperation with the pipeline 2, the restraint frame 26 is in the shape of a hook, the arc-shaped part at the lower end of the restraint frame 26 is used to limit the pawl 25 to avoid the pawl 25 rotating too much, and the side of the rotating rod 21 away from the mounting block 9 is fixedly connected with a protrusion 28.

[0043] By setting the rubber roller 23, the ratchet wheel 24 and the pawl 25, the outer wall of the rubber roller 23 is provided with a plurality of symmetrically distributed grooves for increasing the friction when contacting with the pipeline 2, meanwhile the water in the pipeline 2 contacts with the rubber roller 23 to increase the friction force when the rubber roller 23 contacts with the sidewall of the pipeline 2, the mutual cooperation between the ratchet wheel 24 and the pawl 25, so that the rubber roller 23 can only roll in one direction, i.e. the rubber roller 23 can roll when the plugging mechanism 1 moves towards the inside of the pipeline 2, and the rubber roller 23 will not roll when the plugging mechanism 1 moves along the pipeline 2 towards the fracture, thereby playing a role of pre-positioning when the plugging mechanism 1 is used in cooperation with the pipeline 2, the arc-shaped part at the lower end of the restraint frame 26 is used to limit the pawl 25 to avoid the pawl 25 rotating too much, and the side of the rotating rod 21 away from the mounting block 9 is fixedly connected with a protrusion 28.

[0044] As an embodiment in the present embodiment, as shown in Figures 1-8As shown, in use, first, close the valves before and after the pipeline 2, place the sealing mechanism 1 into the cut pipeline 2, and the pre-positioning mechanism 3 plays a pre-positioning effect on the pipeline 2, so that the sealing mechanism 1 can only move towards the pipeline 2, reduce the impact of water on the sealing mechanism 1, and promote the sealing mechanism 1 to move outward, reduce the difficulty of placing the sealing mechanism 1 into the pipeline 2, increase the pressure in the rubber sleeve 4 through the pressing port 6, so that the rubber sleeve 4 slowly expands and presses the inner wall of the pipeline 2, thereby sealing the pipeline 2 and blocking the water in the pipeline 2, and subsequent repair can be carried out, when the rubber sleeve 4 expands, the rubber sleeve 4 exerts pressure on one end of the rotating frame 18, promoting the rotating frame 18 to slowly rotate towards the water source side, while the one end of the rotating rod 21 is blocked by the side wall of the pipeline 2, the connection between the rotating rod 21 and the connecting rod 19 slowly rotates, the arc portion 30 moves away from the arc groove 31, and under the action of the spring 20, the connecting rod 19 and the spring 20 are contracted, at this time, the rubber roller 23 is not in contact with the side wall of the pipeline 2, but the convex portion 28 is in contact with the side wall of the pipeline 2, thereby reducing the friction between the sealing mechanism 1 and the side wall of the pipeline 2, when water is pumped out of the rubber sleeve 4 through the pressing port 6, the pressure in the rubber sleeve 4 is reduced, so that its volume is reduced and separated from the inner wall of the pipeline 2, and then the sealing mechanism 1 and the pre-positioning mechanism 3 are slowly washed out through the water in the pipeline 2, taken out at the top opening of the pipeline 2, and the device is recycled, so that the pipeline 2 is unobstructed.

[0045] The technical scheme provided by the application has the advantages that the sealing mechanism and the pre-positioning mechanism move towards the water outlet end of the pipeline, if the water source washes out the sealing mechanism and the pre-positioning mechanism, the friction between the outer end of the pre-positioning mechanism and the inner wall of the pipeline offsets the force when the sealing mechanism and the pre-positioning mechanism are washed out, so that the sealing mechanism is easily pushed into the pipeline, the pipeline is easily sealed after the sealing mechanism is pressed, the labor intensity during sealing is reduced, the sealing mechanism is inflated after being filled with fluid, the side wall of the pipeline is pressed, the liquid in the pipeline is blocked, sealing is achieved, after pipeline repair is completed, the pumping pipe is inserted through the reserved hole on the pipeline of the repair part, water is pumped out of the rubber sleeve through the pressing port, the pressure in the rubber sleeve is reduced, the volume is reduced and separated from the inner wall of the pipeline, and then the device is taken out through the reserved top opening of the pipeline, the device is recycled, the pipeline is unobstructed, and the device is easily collected and reused.

[0046] By setting the pre-positioning mechanism, the internal one-way locking member is used to tightly contact with the inner side wall of the pipeline, the one-way locking member is used to drive the sealing mechanism to move unidirectionally along the inner side wall of the pipeline, the rotating rod is provided with a movable slot at the rotating position of the connecting rod, the connecting rod is provided with an arc slot at the side away from the rubber sleeve, the rotating rod is fixedly connected with an arc part matched with the arc slot, the movable slot is used to avoid the interference between the rotating rod and the connecting rod during rotation, the spring is fixedly connected between the connecting rod and the rotating rod, the spring is used to pull the connecting rod and the spring, so that the arc part on the rotating rod is clamped into the arc slot of the connecting rod, when the sealing mechanism slowly moves towards the pipeline, the sealing mechanism continues to move towards the pipeline, the rotating rod is in contact with the inside of the pipeline, so that the connecting rod and the rotating rod relatively rotate, and can move towards the pipeline under the action of the one-way locking member, if the sealing mechanism moves outwards along the inner side wall of the pipeline, the arc part and the arc slot abut against each other, the rotating rod is blocked from continuing to rotate to the side of the rubber sleeve, and then the one-way locking member is tightly contacted with the inner side wall of the pipeline, the one-way locking member increases the resistance when the sealing mechanism moves outwards, and the pre-fixing when the sealing mechanism moves towards the pipeline is realized.

[0047] By setting the rubber roller, the ratchet and the pawl, the outer side wall of the rubber roller is provided with a plurality of symmetrically distributed slots, which is used to increase the friction when contacting with the pipeline, and the water in the pipeline contacts with the rubber roller, so that the friction force when the rubber roller contacts with the side wall of the pipeline is increased, the ratchet and the pawl are matched with each other, so that the rubber roller can only roll unidirectionally, that is, the rubber roller can roll when the sealing mechanism moves towards the pipeline, and the rubber roller cannot roll when the sealing mechanism moves towards the fracture along the pipeline, so that the pre-positioning effect is achieved when the sealing mechanism and the pipeline are used together, the arc-shaped part at the lower end of the constraint frame is used to limit the pawl, so that the angle of the pawl is prevented from being too large, and the convex part is fixedly connected to the side of the rotating rod away from the mounting block.

[0048] The present application covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present application. In order to make the public have a thorough understanding of the present application, the specific details are described in the above preferred embodiments of the present application, and the present application can also be completely understood without the description of these details for those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, flows, elements and circuits are not described in detail.

[0049] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiment methods can be completed by programs instructing related hardware, and the programs can be stored in computer readable storage medium, such as ROM / RAM, magnetic disc, optical disc, etc.

[0050] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as falling within the protection scope of the present application.

Claims

1. A rapid sealing device for emergency repairs of heating pipelines, characterized in that, include: The pipe and a sealing mechanism located inside the pipe, the sealing mechanism can expand after being filled with fluid to press against the inner wall of the pipe, the sealing mechanism includes a central pipe with a water passage hole, and a rubber sleeve is fixedly connected to both sides of the central pipe by flanges, wherein a pressure port with a valve is fixedly connected to the middle of the flange located on the side of the pipe break, which is interconnected with the central pipe, and a lifting ring is fixedly installed on the flange by bolts; The sealing mechanism is located on one side of the water source in the pipeline and is also connected to a pre-positioning mechanism. The outer end of the pre-positioning mechanism is in contact with the side wall of the pipeline. The pre-positioning mechanism is used to drive the sealing mechanism to move unidirectionally toward the inner wall of the pipeline. The pre-positioning mechanism includes a mounting block connected to the flange. The mounting block has multiple mounting holes. The mounting block is fixed to the flange through the multiple mounting holes, bolts, and nuts. Guide components are connected to the outer side wall of the mounting block and around its perimeter. The guide assembly includes a fixed shaft fixedly connected to the mounting block. A rotating frame is rotatably connected to the outer wall of the fixed shaft. The end of the rotating frame away from the fixed shaft is separated to both sides. A connecting rod is fixedly connected to the side of the rotating frame away from the mounting block. A rotating rod is rotatably connected to the end of the connecting rod away from the rotating frame. A one-way locking element is connected to the other side of the rotating rod. A spring is fixedly connected between the connecting rod and the rotating rod. An abutment block is fixedly connected to the separated end of the rotating frame facing the flange. A pressure plate is fixedly connected to the other separated end of the rotating frame. Limit frames are fixedly connected to the side walls of the mounting block located at the fixed shaft. The rotating rod has a movable groove at the rotation point of the connecting rod, and the connecting rod has an arc groove on the side away from the rubber sleeve. An arc part that matches the arc groove is fixedly connected to the rotating rod. The one-way locking component includes a rubber roller rotatably connected to the rotating rod. A shaft fixed in the middle of the rubber roller passes through one side of the rotating rod and is fixedly connected to a ratchet. A pawl adapted to the ratchet is rotatably connected to one side of the rotating rod. A constraint frame is fixedly connected to the outer wall of the rotating rod, and a Z-shaped spring piece is installed between the constraint frame and the pawl, which pushes the pawl to rotate toward the ratchet. The constraint frame is hook-shaped, and a protrusion is fixedly connected to the side of the rotating rod away from the mounting block.

2. The rapid sealing device for emergency repair of heating pipelines according to claim 1, characterized in that, The outer wall of the mounting block is uniformly provided with notches, and the mounting block is fixedly connected with reinforcing ribs between two adjacent mounting holes.

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