Novel double-motor power pipeline sleeve washing equipment and construction method thereof

Abstract

The invention relates to novel double-motor power pipeline sleeve washing equipment and a construction method thereof, and belongs to the technical field of underground pipeline dismantling construction equipment. Comprising a drill rod, a fixing piece, a drill rod sleeve, a slurry motor and a working pipe sleeve. The two sides of the working pipe sleeve are connected with the drill rod sleeve through fixing pieces, the drill rod penetrates through the drill rod sleeve, and one end of the drill rod is connected with the mud motor. The construction method comprises the steps of measuring and positioning; arranging a pipeline sleeve washing site; and performing pipeline sleeve washing. Under the condition that heavy excavation is not needed, the two drilling machines are adopted to synchronously push the working pipe sleeve and the slurry motor to slide forwards along the burying track of the pipeline to be dismantled, meanwhile, the slurry motor sprays slurry to clean mud scraps on the pipeline so as to achieve the purposes of loosening the pipeline and stripping the pipeline from the stratum, damage to surface attachments is avoided, and the device is economical and environmentally friendly.

Description

Technical Field

[0001] The invention relates to a novel dual-motor powered pipeline sleeve washing device and a construction method thereof, belonging to the technical field of underground pipeline dismantling construction equipment. Background Art

[0002] At present, the removal of abandoned and old pipelines buried underground in China generally adopts the large-scale excavation technology to carry out pipeline removal construction, which requires a large working surface, damages the surface attachments in the working area, and damages the ecological environment; it is necessary to remove buildings in the area above the working surface, which has high expropriation and relocation costs and has a large-scale impact on ground transportation, production, farming and life activities. For the removal of underground pipelines in rivers and seaports, the cofferdam + large-scale excavation technology is adopted for pipeline removal. The cofferdam construction is greatly affected by the season and tide, and the overall construction period is long. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention discloses a novel dual-motor powered pipeline sleeve washing equipment and a construction method thereof. Without the need for large excavation, two drilling rigs are used to synchronously push the working pipe sleeve and the mud motor to slide forward along the buried track of the pipeline to be removed. At the same time, the mud motor sprays mud to clean the mud debris on the pipeline to loosen the pipeline and separate it from the stratum, thereby providing convenient conditions for completing the pipeline removal construction task and avoiding damage to surface attachments. This is both economical and environmentally friendly and shortens the construction period.

[0004] The technical solution adopted by the present invention is: a new type of dual-motor powered pipeline washing equipment, including a drill pipe, a fixing, a drill pipe sleeve, a mud motor, and a working pipe sleeve; both sides of the working pipe sleeve are connected to the drill pipe sleeve through fixings, the drill pipe passes through the drill pipe sleeve, and one end of the drill pipe is connected to the mud motor.

[0005] Furthermore, fixing rings for fastening the drill rod are provided on both sides of the drill rod sleeve to ensure that the working pipe sleeve moves synchronously with the drill rod.

[0006] Furthermore, the fixing member comprises a fixing plate and a connecting fixing block, and two ends of the connecting fixing block are respectively connected to the fixing plate.

[0007] Furthermore, one end of the fixing plate is welded to the drill pipe sleeve, and the other end of the fixing plate is welded to the working pipe sleeve; the side of the connecting fixing block is welded and fixed to the working pipe sleeve, which plays a role in strengthening the fixation.

[0008] Furthermore, the drill rod sleeve is fixed at a distance of 30 to 50 mm from the mud motor, and the drill rod sleeve is fixed by a fixing ring to ensure that the drill rod can rotate flexibly in the drill rod sleeve.

[0009] Furthermore, the inner diameter of the working pipe sleeve is 100-200 mm larger than the outer diameter of the pipeline to be removed, and the inner diameter of the drill pipe sleeve is 30-50 mm larger than the diameter of the mud motor.

[0010] A construction method of a new type of dual-motor powered pipeline washing equipment, the specific steps are as follows:

[0011] Step 1: Measurement and positioning: According to the design drawings and re-measurement reports, measure the direction of the old pipeline and mark the axis of the old pipeline; according to the measurement axis and technical plan requirements, lay out the edge of the working range required for construction;

[0012] Step 2: Pipeline washing site layout: properly level the ditches and ridges within the construction zone; make the access roads and sites dust-free, and cover the exposed ground; dig a mud pool, and after the excavation of the mud pool, lay an anti-seepage membrane on the surface to prevent mud leakage; the mud in the mud pool is settled and pumped to the mud mixing tank for reuse, and the mud pool is hard-maintained with steel pipes around it; dig a drainage ditch from the drilling rig entry point, level the bottom and surrounding areas of the drainage ditch with mortar, and dig a ditch from the entry pit to discharge the mud into the drainage pool;

[0013] Step three, pipe sleeve washing: position the drilling rig on the center line of the dismantled pipeline, and set the drilling rig support angle strictly according to the drawing; put the working pipe sleeve on the pipeline, and weld the drill pipe sleeve with a fixed ring, and relatively fix it 30 to 50 mm in front of the bending point of the mud motor to ensure that the drill pipe can rotate flexibly in the drill pipe sleeve; connect the drill pipe and the drilling rig, and use two drilling rigs to synchronously push the working pipe sleeve and the mud motor to slide forward along the buried track of the pipeline to be dismantled. At the same time, the mud motor sprays mud to clean the mud debris on the pipeline to loosen the pipeline and peel it off from the formation; the thrust is less than the minimum thrust for drill pipe deformation; the mud displacement ensures that the mud working pressure is not less than 1.5 MPa; during the construction process, the two drilling rigs are coordinated to control the travel speed to keep consistent.

[0014] The present invention discloses a novel dual-motor powered pipeline sleeve washing equipment and a construction method thereof, which has the beneficial effect that, without the need for large excavation, two drilling rigs are used to synchronously push the working pipe sleeve and the mud motor to slide forward along the buried track of the pipeline to be removed, and at the same time the mud motor sprays mud to clean the mud debris on the pipeline to achieve the purpose of loosening the pipeline and stripping it from the stratum, thus avoiding damage to surface attachments, which is both economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 Shown is a top view schematic diagram of embodiment 1 of the present invention;

[0017] Figure 2 Shown Figure 1 AA section view schematic.

[0018] As shown in the figure: 1. Drilling rig; 2. Drill pipe; 3. Fixing parts; 4. Drill pipe sleeve; 5. Mud motor; 6. Working pipe sleeve; 7. Fixing ring; 8. Fixing plate; 9. Connecting fixing block.

[0019] Specific implementation methods

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In order to further understand the content of the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1: Figures 1-2 As shown, a new type of dual-motor powered pipe sleeve washing equipment includes a drill pipe 2, a fixing part 3, a drill pipe sleeve 4, a mud motor 5, and a working pipe sleeve 6; both sides of the working pipe sleeve 6 are connected to the drill pipe sleeve 4 through the fixing part 3, the drill pipe 2 passes through the drill pipe sleeve 4, and one end of the drill pipe 2 is connected to the mud motor 5. The other end of the drill pipe 2 is connected to the drilling rig 1, and the working pipe sleeve 6 is sleeved on the outer wall of the belt removal pipeline. The drill pipe sleeve 4 is also provided with a fixing ring 7 sleeved on the drill pipe 2 on both sides, and the fixing ring 7 is welded on the drill pipe sleeve 4 to ensure that the working pipe sleeve 6 moves synchronously with the drill pipe 2.

[0023] The fixing member 3 includes a fixing plate 8 and a connecting fixing block 9, and both ends of the connecting fixing block 9 are respectively connected to the fixing plate 8. One end of the fixing plate 8 is welded to the drill pipe sleeve 4, and the other end of the fixing plate 8 is welded to the working pipe sleeve 6; the side of the connecting fixing block 9 is welded and fixed to the working pipe sleeve 6, which plays a role in strengthening the fixation.

[0024] The inner diameter of the working pipe sleeve 6 is 100-200 mm larger than the outer diameter of the pipeline to be removed, and the inner diameter of the drill pipe sleeve 4 is 30-50 mm larger than the diameter of the mud motor 5 .

[0025] A construction method of a new type of dual-motor powered pipeline washing equipment, the specific steps are as follows:

[0026] Step 1: Measurement and positioning: According to the design drawings and the re-measurement report provided by the owner, measure the direction of the old pipeline and mark the axis of the old pipeline; lay out the edge of the working range required for construction according to the measurement axis and technical plan requirements;

[0027] Step 2: Pipeline washing site layout: properly level the ditches and ridges within the construction zone; make the access roads and sites dust-free, and cover the exposed ground; dig a mud pool, and after the excavation of the mud pool, lay an anti-seepage membrane on the surface to prevent mud leakage; the mud in the mud pool is treated by sedimentation and pumped to the mud mixing tank for reuse, and the mud pool is hard-maintained with steel pipes around it; dig a drainage ditch from the entry point of the drilling rig 1, level the bottom and surrounding areas of the drainage ditch with mortar, and dig a ditch from the entry point pit to discharge the mud into the drainage pool;

[0028] Step 3: Pipeline washing: Position the drilling rig 1 at the centerline of the dismantled pipeline, and set the support angle of the drilling rig 1 strictly according to the drawing; the working pipe sleeve 6 is sleeved on the pipeline, and the drill pipe sleeve 4 is welded with a fixing ring 7 and relatively fixed at a position 30 to 50 mm before the bending point of the mud motor 5 to ensure that the drill pipe 2 can rotate flexibly in the drill pipe sleeve 4; the drill pipe 2 is connected to the drilling rig 1, and two drilling rigs 1 are used to synchronously push the washing ring to slide forward along the buried track of the pipeline to be dismantled, and at the same time, the mud motor 5 sprays mud to clean the mud debris on the pipeline, so that there is a gap of at least one working pipe sleeve 6 wall thickness between the pipeline and the soil layer, so as to achieve the purpose of stripping the pipeline from the stratum; wherein, the thrust is less than the minimum thrust of the deformation of the drill pipe 2; the mud displacement ensures that the mud working pressure is not less than 1.5MPa; during the construction process, pay attention to and coordinate the control to keep the walking speed of the two drilling rigs 1 consistent. After the washing construction, the dismantled pipeline is tested and towed back. If the back-pulling force is large, it means that there is silt blockage in the hole, and the hole can be cleaned by washing.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of dual-motor powered pipe cleaning equipment, characterized in that: The drill pipe sleeve (4) comprises a drill rod (2), a fixing part (3), a drill rod sleeve (4), a mud motor (5), and a working pipe sleeve (6); both sides of the working pipe sleeve (6) are connected to the drill rod sleeve (4) through the fixing part (3), the drill rod (2) passes through the drill rod sleeve (4), and one end of the drill rod (2) is connected to the mud motor (5).

2. A novel dual-motor powered pipe cleaning device according to claim 1, characterized in that: Fixing rings (7) for fastening the drill rod (2) are also provided on both sides of the drill rod sleeve (4).

3. A novel dual-motor powered pipe cleaning device according to claim 2, characterized in that: The fixing ring (7) is welded to the drill pipe sleeve (4).

4. The novel dual-motor powered pipe cleaning equipment according to claim 1 is characterized in that: The fixing member (3) comprises a fixing plate (8) and a connecting fixing block (9), and two ends of the connecting fixing block (9) are respectively connected to the fixing plate (8).

5. A novel dual-motor powered pipe cleaning device according to claim 4, characterized in that: One end of the fixing plate (8) is welded to the drill pipe sleeve (4), and the other end of the fixing plate (8) is welded to the working pipe sleeve (6); the side surface of the connecting fixing block (9) is welded and fixed to the working pipe sleeve (6).

6. The novel dual-motor powered pipe cleaning equipment according to claim 1 is characterized in that: The drill pipe sleeve (4) is fixed at a distance of 30 to 50 mm from the mud motor (5).

7. A novel dual-motor powered pipe cleaning device according to any one of claims 1 to 6, characterized in that: The inner diameter of the working pipe sleeve (6) is 100-200 mm larger than the outer diameter of the pipeline to be removed, and the inner diameter of the drill pipe sleeve (4) is 30-50 mm larger than the diameter of the mud motor (5).

8. A construction method using the novel dual-motor powered pipeline washing equipment according to claim 1, characterized in that: The specific steps are as follows: Step 1: Measurement and positioning: According to the design drawings and re-measurement reports, measure the direction of the pipeline to be removed and mark the axis of the old pipeline; according to the measurement axis and technical plan requirements, lay out the edge of the working range required for construction; Step 2: Layout of the pipe wash site: Level the site within the construction zone; Dust-free the access roads and site, and cover the exposed ground; Dig a mud pool, and after the mud pool is excavated, lay an impermeable membrane on the surface to prevent mud leakage; The mud in the mud pool is subjected to sedimentation treatment and pumped to the mud mixing tank for reuse, and the mud pool is hard-maintained with steel pipes around it; Dig a drainage ditch from the entry point of the drilling rig (1), level the bottom and surrounding areas of the drainage ditch with mortar, and dig a ditch from the entry point pit to discharge the mud into the drainage pool; Step 3: Pipeline washing: The drilling rig (1) is positioned at the centerline of the dismantled pipeline, and the support angle of the drilling rig (1) is set strictly according to the drawing; the working pipe sleeve (6) is sleeved on the pipeline, and the drill rod (2) is connected to the drilling rig (1). Two drilling rigs (1) are used to synchronously push the working pipe sleeve (6) and the mud motor (5) to slide forward along the buried track of the pipeline to be dismantled, and the mud motor (5) sprays mud at the same time; during the construction process, the thrust is less than the minimum thrust of the drill rod (2) deformation; the mud displacement ensures that the mud working pressure is not less than 1.5MPa; during the construction process, the two drilling rigs (1) are coordinated to control the travel speed to be consistent.

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