A drainage pipe plugging device

Abstract

The present invention discloses a drainage pipe plugging device. The plugging device may include: a recovery mechanism above the well, the recovery mechanism above the well includes a support frame and a first motor located on the support frame; a downhole plugging mechanism, the downhole plugging mechanism includes a first telescopic rod, a second motor connected to the fixed end of the first telescopic rod, and a plurality of scissor mechanisms connected to the first telescopic rod, the plurality of scissor mechanisms are evenly arranged around the first telescopic rod, and the second motor cooperates with the first motor to wind the winding tape onto the second motor or recover the winding tape from the second motor; in the present invention, the downhole plugging mechanism is lowered to the pipe orifice through the recovery mechanism above the well, the first telescopic rod is extended and retracted and clamped in the pipe, and the relative position with the pipe is fixed, and then the second motor starts to work, and the winding tape is quickly wound to realize the pipe plugging work.

Description

Technical Field

[0001] The present invention relates to the field of pipeline repair equipment, and more particularly, to a drainage pipeline plugging device. Background Art

[0002] At present, it is extremely difficult to plug large drainage pipelines, and plugging devices or facilities such as airbag plugging cannot effectively solve this problem. Although mechanical plugging has advantages such as high safety, reliability, and simplicity during the plugging operation of large drainage pipelines, it is still restricted by the size of inspection wells and there is no good solution.

[0003] Therefore, it is expected to propose a new drainage pipeline plugging device to solve the problem that the traditional plugging device is restricted by the size of inspection wells during use.

[0004] The information disclosed in the background art section of the present invention is only intended to deepen the understanding of the general background art of the present invention, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] The object of the present invention is to propose a drainage pipeline plugging device, so that the plugging device can be applicable to inspection wells of different sizes and reduce the restriction of the inspection well size on the plugging device.

[0006] To achieve the above object, the present invention proposes a drainage pipeline plugging device, comprising:

[0007] An above-well recovery mechanism, the above-well recovery mechanism includes a support frame and a first motor located on the support frame;

[0008] A down-well plugging mechanism, the down-well plugging mechanism includes a first telescopic rod, a second motor connected to the fixed end of the first telescopic rod, and a plurality of scissor mechanisms connected to the first telescopic rod. The plurality of scissor mechanisms are evenly arranged around the first telescopic rod, and the second motor cooperates with the first motor to wind the winding belt onto the second motor or recover the winding belt from the second motor;

[0009] A down-well auxiliary mechanism, the down-well auxiliary mechanism is connected to the above-well recovery mechanism and the down-well plugging mechanism respectively through a towing rope.

[0010] Optionally, the scissors-type mechanism includes a horizontal connecting plate, a wall supporting arc plate, a first support rod and a second support rod, the first end of the horizontal connecting plate is provided with a slide rail extending along its length direction, the middle part of the first support rod and the middle part of the second support rod are hinged by a hinge, one end of the first support rod is hinged to the telescopic end of the first telescopic rod, and the other end is hinged to the second end of the horizontal connecting plate, one end of the second support rod is hinged to the fixed end of the first telescopic rod, and the other end is slidably connected to the slide groove, and the wall supporting arc plate is installed on the horizontal connecting plate.

[0011] Optionally, the downhole plugging mechanism further includes a tensioning mechanism, and the tensioning mechanism is installed on one of the supporting wall arc plates.

[0012] Optionally, the well-lowering auxiliary mechanism comprises a well-lowering auxiliary rod, a second telescopic rod and a plurality of support rod groups, the second telescopic rod being telescopically connected to the well-lowering auxiliary rod, and the plurality of support rod groups being evenly arranged around the well-lowering auxiliary rod and the second telescopic rod; each of the support rod groups comprises a main support rod, a first auxiliary support rod, a second auxiliary support rod and a backrest, one end of the first auxiliary support rod and one end of the second auxiliary support rod are both hinged to the well-lowering auxiliary rod, the other end of the first auxiliary support rod and the other end of the second auxiliary support rod are respectively hinged to the two ends of the backrest, one end of the main support rod is hinged to the telescopic end of the second telescopic rod, and the other end is hinged to the middle part of the first auxiliary support; a first fixed pulley is provided on the main support rod, and a second fixed pulley is provided on the inner side of the backrest.

[0013] Optionally, the uphole recovery mechanism also includes a third fixed pulley located on the support frame, the rotating end of the first motor is connected to one end of the traction rope, and the other end of the traction rope passes through the third fixed pulley, the first fixed pulley and the second fixed pulley in sequence and is connected to the tensioning mechanism.

[0014] Optionally, the uphole recovery mechanism further includes a hydraulic control box installed on the support frame, and the hydraulic control box is used to control the start and stop of the first motor.

[0015] Optionally, the uphole recovery mechanism also includes a winding belt recovery disk transmission-connected to the first motor, one end of the winding belt is connected to the winding belt recovery disk, and the other end of the winding belt passes through the tensioning mechanism and is connected to the second motor.

[0016] Optionally, the first motor and the second motor are both hydraulic motors, and the first telescopic rod and the second telescopic rod are both hydraulic telescopic rods.

[0017] Optionally, the traction rope is made of metal.

[0018] Optionally, the tensioning mechanism includes a pair of clamping bodies and a hydraulic telescopic device. The length of the clamping body is greater than the width of the winding belt, and the hydraulic telescopic device is installed between the pair of clamping bodies.

[0019] The beneficial effects of the present invention are as follows: The device of the present invention has a simple structure and is easy to manufacture. Different modules can be replaced according to the specifications of drainage pipes to meet the requirements of plugging operations for existing circular drainage pipes; it can move for operation and adapt to plugging operations in different environments; the plugging operation is mechanized, enabling personnel not to enter the well for operation, which is efficient, safe, time-saving and labor-saving, and improves the urban management level.

[0020] The device of the present invention has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent specific embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent specific embodiments. These accompanying drawings and specific embodiments are jointly used to explain the specific principles of the present invention. Description of the Drawings

[0021] By describing the exemplary embodiments of the present invention in more detail in conjunction with the accompanying drawings, the above-mentioned and other objects, features and advantages of the present invention will become more obvious. In the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0022] Figure 1 The front view of the downhole plugging mechanism according to the embodiment of the present invention is shown.

[0023] In the figure: 1 - slide rail, 2 - tensioning mechanism, 3 - horizontal connecting plate, 4 - first support rod, 5 - hinge, 6 - first telescopic rod, 7 - winding belt, 8 - second motor, 9 - wall support arc plate. Detailed Description of the Invention

[0024] The present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0025] According to a drainage pipe plugging device of the present invention, it includes:

[0026] A recovery mechanism above the well, the recovery mechanism above the well includes a support frame and a first motor located on the support frame;

[0027] Downhole plugging mechanism, the downhole plugging mechanism includes a first telescopic rod, a second motor connected to the fixed end of the first telescopic rod, and a plurality of scissor mechanisms connected to the first telescopic rod. The plurality of scissor mechanisms are evenly arranged around the first telescopic rod. The second motor cooperates with the first motor to wind the winding tape onto the second motor or recover the winding tape from the second motor;

[0028] Downhole auxiliary mechanism, the downhole auxiliary mechanism is connected to the surface recovery mechanism and the downhole plugging mechanism respectively through a towing rope.

[0029] The downhole plugging mechanism is lowered to the pipe orifice by the surface recovery mechanism. After the first telescopic rod is extended and retracted, it is stuck in the pipe and keeps a fixed relative position with the pipe. Then the second motor starts to work and quickly winds the winding tape, so as to realize the pipe plugging work.

[0030] Thus, the device can adapt to pipes and inspection wells of different sizes, and the second motor can drive the winding tape to properly plug the pipe, enhancing the versatility of the device, thereby saving the downhole plugging cost.

[0031] Figure 1 The front view of the downhole plugging mechanism according to the embodiment of the present invention is shown.

[0032] Reference Figure 1 As shown, this embodiment provides a technical solution: a drainage pipe plugging device, including:

[0033] Surface recovery mechanism, the surface recovery mechanism includes a support frame and a first motor located on the support frame. The first motor drives the downhole auxiliary mechanism and the downhole plugging mechanism to move through a towing rope;

[0034] Downhole plugging mechanism, the downhole plugging mechanism includes a first telescopic rod 6 with a bearing capacity of ≥ 8 tons, a second motor 8 connected to the fixed end of the first telescopic rod 6, and a plurality of scissor mechanisms connected to the first telescopic rod 6. The plurality of scissor mechanisms are evenly arranged around the first telescopic rod 6. The second motor 8 cooperates with the first motor to wind the winding tape 7 onto the second motor 8 or recover the winding tape 7 from the second motor 8. The scissor mechanism can enable the downhole plugging mechanism to enter the well in the state of the minimum length and the minimum diameter, meeting the requirements of all existing models of circular drainage pipes for the winding tape used in downhole plugging. The width of the winding tape 7 is 310 mm and the thickness is 20 mm;

[0035] Downhole auxiliary mechanism, the downhole auxiliary mechanism is connected to the surface recovery mechanism and the downhole plugging mechanism respectively through a towing rope.

[0036] Please refer to Figure 1, specifically, the scissor mechanism includes a horizontal connecting plate 3, a supporting wall arc plate 9, a first support rod 4 and a second support rod. A slide rail 1 extending along its length direction is provided at the first end of the horizontal connecting plate 3. The middle parts of the first support rod 4 and the second support rod are hinged by a hinge 5. One end of the first support rod 4 is hinged to the telescopic end of the first telescopic rod 6, and the other end is hinged to the second end of the horizontal connecting plate 3. One end of the second support rod is hinged to the fixed end of the first telescopic rod 6, and the other end is slidably connected to the chute. The supporting wall arc plate 9 is installed on the horizontal connecting plate 3. The first telescopic rod 6 is in the extended state in the initial state. When the telescopic end of the first telescopic rod 6 contracts, the supporting wall arc plate 9 is driven by the support rod to expand towards the pipe wall, so that the position of the downhole plugging mechanism relative to the pipe is relatively fixed. Among them, the horizontal connecting plate 3 has a length of 1100 mm, a width of 50 mm, and a thickness of 20 mm. The supporting wall arc plate 9 has a length of 1100 mm, a width of 120 mm, and a thickness of 20 mm. The slide rail 1 has a length of 700 mm.

[0037] Specifically, the downhole plugging mechanism further includes a tensioning mechanism 2, and the tensioning mechanism 2 is installed on one of the supporting wall arc plates 9.

[0038] Specifically, the downhole auxiliary mechanism includes a downhole auxiliary rod, a second telescopic rod, a main support rod, and a plurality of support rod groups. The second telescopic rod is telescopically connected to the downhole auxiliary rod. A plurality of support rod groups are uniformly arranged around the downhole auxiliary rod and the second telescopic rod. Each support rod group includes a main support rod, a first auxiliary support rod, a second auxiliary support rod, and a backrest. The first auxiliary support rod and the second auxiliary support rod are arranged in parallel. One end of the first auxiliary support rod and one end of the second auxiliary support rod are both hinged to the downhole auxiliary rod. The other end of the first auxiliary support rod and the other end of the second auxiliary support rod are respectively hinged to both ends of the backrest. One end of the main support rod is hinged to the telescopic end of the second telescopic rod, and the other end is hinged to the middle part of the first auxiliary support rod group. A first fixed pulley is provided on the main support rod, and a second fixed pulley is installed on the inner side of the backrest. When the second telescopic rod extends, it drives the main support rod to rotate, and the main support rod drives the auxiliary support rod group to rotate, so that the backrest moves towards the pipe wall. Among them, the bearing capacity of the second telescopic rod is ≥8 tons. The main support rod has a length of 200 mm, a width of 50 mm, and a thickness of 20 mm.

[0039] Specifically, the aboveground recovery mechanism further includes a third fixed pulley located on the support frame. The rotating end of the first motor is connected to one end of the traction rope. The other end of the traction rope sequentially passes through the third fixed pulley, the first fixed pulley, and the second fixed pulley and is connected to the tensioning mechanism 2. The first motor drives the winding tape recovery disc and the third fixed pulley to rotate, so as to drive the traction rope and the winding tape 7 to move. Through the second fixed pulley, the force received by the downhole auxiliary mechanism from the first motor can be kept in the vertical direction, making its falling more stable. Among them, the third fixed pulley has a diameter of 160 mm and a thickness of 60 mm.

[0040] Specifically, the wellhead recovery mechanism further includes a hydraulic control box installed on the support frame and a winding tape recovery disk installed on the output end of the first motor. The hydraulic control box is used to control the first motor. The winding tape 7 is wound around the winding tape recovery disk, and the maximum diameter of the plugging tape recovery disk is 3000 mm.

[0041] Specifically, one end of the winding tape 7 is connected to the winding tape recovery disk, and the other end of the winding tape 7 passes through the tensioning mechanism and is connected to the second motor. The tensioning mechanism 2 is connected to the towing rope to drive the downhole plugging mechanism. Through the tensioning mechanism 2, the winding tape 7 can be wound smoothly without knotting or having gaps, so that the plugging is more thorough.

[0042] Specifically, both the first motor and the second motor 8 are hydraulic motors, and both the first telescopic rod 6 and the second telescopic rod are hydraulic telescopic rods.

[0043] Specifically, the towing rope is made of metal.

[0044] Specifically, the tensioning mechanism 2 includes a pair of clamping bodies and a hydraulic telescopic device. The length of the clamping body is greater than the width of the winding tape 7. The hydraulic telescopic device is installed between the pair of clamping bodies. The distance between the two clamping bodies is controlled by the hydraulic telescopic device. When the winding tape needs to be tensioned, the distance is reduced, and the winding tape 7 will be tensioned when passing through the tensioning mechanism 2. When recovering, the distance is increased, and the winding tape 7 can be recovered normally.

[0045] The specific working process of this embodiment is as follows:

[0046] During operation, the first telescopic rod 6 on the downhole plugging mechanism is first extended, and the first support rod 4, the horizontal connecting plate 3 and the supporting wall arc plate 9 are driven to retract into a vertical strip state through the hinge. Then, the downhole plugging device is hoisted into the well as a whole by the support frame on the well recovery mechanism on the well. At the same time, the first motor drives the winding belt recovery disk to lower the winding belt 7 downward. After the downhole plugging device as a whole reaches the bottom of the inspection well chamber, the first telescopic rod 6 on the downhole plugging device is retracted, and the first support rod 4, the horizontal connecting plate 3 and the supporting wall arc plate 9 are driven to extend outward through the hinge 5, so that the supporting wall arc plate 9 is directly and completely in contact with the inner pipe wall. At this time, the first telescopic rod 6 It is extended again to make the wall supporting arc plate 9 disengage from the inner pipe wall, and then the second telescopic rod on the plugging auxiliary tool retracts to make the active support rod, the auxiliary support rod group, and the backrest move toward the side of the downhole auxiliary rod, that is, they are retracted inward to ensure that the plugging auxiliary tool as a whole is in the shape of a vertical bar when it goes down the well. When the plugging auxiliary tool reaches the inspection well chamber, the second telescopic rod is extended to make the active support rod, the auxiliary support rod group, and the backrest move away from the downhole auxiliary rod, that is, they are extended outward to make the backrest contact the inspection well wall, so as to achieve the purpose of relative fixation of the plugging auxiliary tool. Then the first motor pulls the traction rope to move the downhole plugging device as a whole toward the blocked pipe mouth, and stops moving when the backrest part of the tensioning mechanism 2 contacts the pipe mouth. Then the first telescopic rod 6 on the downhole plugging device retracts again to make the supporting wall arc plate 9 completely contact with the inner wall of the blocked drainage pipe, so as to achieve the purpose of relative fixation of the downhole plugging device, and then the second motor 8 starts to drive the winding belt 7 to perform a winding movement. When the winding belt 7 is unable to be wound on the second motor 8, a cylindrical plugging entity with the same size as the inner diameter of the drainage pipe is formed on the second motor 8, and the purpose of complete blocking is achieved. When the blockage needs to be removed after rescue operations are completed, the first motor on the well recovery device drives the sealing belt recovery disk to recover the winding belt 7 upward. When the winding belt 7 is completely recovered, the second motor 8 on the downhole sealing device extends, and drives the first support rod 4, the horizontal connecting plate 3, and the wall arc plate 9 to retract into a vertical bar state through the hinge 5. Then the second telescopic rod on the sealing auxiliary tool retracts to make the active support rod, the auxiliary support rod group, and the backrest move to the side of the downhole auxiliary rod, that is, they are also recovered inward to ensure that the sealing auxiliary tool is in a vertical bar shape as a whole. Finally, the first motor on the well recovery device pulls the traction rope to bring the sealing auxiliary tool and the downhole sealing device out of the well to complete the blockage removal operation.

[0047] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A drainage pipe plugging device, characterized in that, include: An uphole recovery mechanism, the uphole recovery mechanism comprising a support frame and a first motor located on the support frame; A downhole plugging mechanism, the downhole plugging mechanism comprising a first telescopic rod, a second motor connected to a fixed end of the first telescopic rod, and a plurality of scissor-type mechanisms connected to the first telescopic rod, the plurality of scissor-type mechanisms being evenly arranged around the first telescopic rod, the second motor cooperating with the first motor to wind a winding belt onto the second motor or to recover the winding belt from the second motor; A downhole auxiliary mechanism, wherein the downhole auxiliary mechanism is connected to the uphole recovery mechanism and the downhole plugging mechanism respectively through a traction rope; The scissor-type mechanism comprises a horizontal connecting plate, a wall supporting arc plate, a first supporting rod and a second supporting rod, the first end of the horizontal connecting plate is provided with a slide rail extending along its length direction, the middle part of the first supporting rod and the middle part of the second supporting rod are hinged by a hinge, one end of the first supporting rod is hinged to the telescopic end of the first telescopic rod, and the other end is hinged to the second end of the horizontal connecting plate, one end of the second supporting rod is hinged to the fixed end of the first telescopic rod, and the other end is slidably connected to the slide rail, and the wall supporting arc plate is mounted on the horizontal connecting plate; The underground plugging mechanism also includes a tensioning mechanism, which is installed on one of the supporting wall arc plates; The well-going auxiliary mechanism comprises a well-going auxiliary rod, a second telescopic rod and a plurality of support rod groups, the second telescopic rod being telescopically connected to the well-going auxiliary rod, and the plurality of support rod groups are evenly arranged around the well-going auxiliary rod and the second telescopic rod; each of the support rod groups comprises a main support rod, a first auxiliary support rod, a second auxiliary support rod and a backrest; the first auxiliary support rod and the second auxiliary support rod are arranged in parallel, one end of the first auxiliary support rod and one end of the second auxiliary support rod are hinged to the well-going auxiliary rod, the other end of the first auxiliary support rod and the other end of the second auxiliary support rod are respectively hinged to the two ends of the backrest; one end of the main support rod is hinged to the telescopic end of the second telescopic rod, and the other end is hinged to the middle part of the first auxiliary support; a first fixed pulley is provided on the main support rod, and a second fixed pulley is provided on the inner side of the backrest; The above-hole recovery mechanism further includes a third fixed pulley located on the support frame, the rotating end of the first motor is connected to one end of the traction rope, and the other end of the traction rope passes through the third fixed pulley, the first fixed pulley and the second fixed pulley in sequence and is connected to the tensioning mechanism; The uphole recovery mechanism further comprises a winding belt recovery disk drivingly connected to the first motor, one end of the winding belt is connected to the winding belt recovery disk, and the other end of the winding belt passes through the tensioning mechanism and is connected to the second motor; The tensioning mechanism comprises a pair of clamping bodies and a hydraulic expansion and contraction device. The length of the clamping bodies is greater than the width of the winding belt. The hydraulic expansion and contraction device is installed between the pair of clamping bodies.

2. The drainage pipe plugging device according to claim 1, characterized in that, The above-mentioned in-well recovery mechanism further includes a hydraulic control box installed on the support frame, and the hydraulic control box is used to control the start and stop of the first motor.

3. The drainage pipe plugging device according to claim 1, characterized in that, Both the first motor and the second motor are hydraulic motors, and both the first telescopic rod and the second telescopic rod are hydraulic telescopic rods.

4. The drainage pipe plugging device according to claim 1, characterized in that, The towing rope is made of metal.

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