Double-layer pipeline pushing resistance reduction device
By using slides and pulley components in double-layer pipe push-up and drag-reducing devices, the problem of corrosion protection layer damage during traditional push-up process is solved, precise push-up and service life of the pipe is achieved, and the groove-off process is provided. Positioning and support functions in.
Patent Information
- Application Number
- CN202420822153.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-19
AI Technical Summary
During the pushing process, traditional double-layer pipeline structures can easily cause damage to the corrosion-proof layer at the contact parts of the inner and outer pipelines, reducing the service life of the pipeline.
Design a double-layer pipe push-up and drag reduction device, including installing a slide on the inner wall of the outer pipe and installing multiple pulley components on the inner pipe surface, and rolling in the slide using guide pulleys and support pulleys to ensure that the inner pipe is along the slide toward the outer pipe Move internally, avoid direct contact, and fix the spacing between the slides by positioning the steel bars.
Accurate pushing of double-layer pipes is achieved, avoiding damage to the corrosion layer, improving the service life of the pipes, and providing positioning and supporting roles during the groove removal process.
Smart Images
Figure CN222142203U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of double-layer pipeline installation, in particular to a double-layer pipeline jacking and drag reduction device. Background Art
[0002] As a channel for transporting media such as oil, gas, and water, pipeline projects are becoming more and more common across rivers. The traditional double-layer pipeline structure mainly uses open excavation or jacking to complete the outer pipeline structure, and then manually lays a small inner pipeline in it, and then fills the gap between the outer pipeline and the inner pipeline with concrete.
[0003] The gap between the inner pipe and the outer pipe is small, and there is not much operating space. Therefore, it is not easy to lay the outer pipe inside the outer pipe using large equipment. If the inner pipe is directly pushed into the outer pipe, friction will occur at the contact point between the inner and outer pipes, which will damage the anti-corrosion layer at the contact point between the inner and outer pipes and reduce the service life of the pipe. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a double-layer pipeline jacking drag reduction device, which solves the problems mentioned in the above background.
[0005] The utility model provides the following technical solution: a double-layer pipeline push-up drag reduction device, comprising: a slideway installed on the inner wall of an outer pipeline and a plurality of first pulley assemblies installed on the surface of the inner pipeline, the number of the slideways is two, and the two slideways are symmetrically arranged on the inner wall of the outer pipeline;
[0006] Each of the first pulley assemblies includes two guide pulleys, and the two guide pulleys are symmetrically connected to the surface of the inner pipe, and the guide pulleys are connected to the inner wall of the slideway.
[0007] Preferably, a plurality of second pulley assemblies are provided on the surface of the inner pipe;
[0008] Each second pulley assembly includes two supporting pulleys, the two supporting pulleys are symmetrically arranged on the surface of the inner pipe, and the two guide pulleys are located between the two supporting pulleys.
[0009] Preferably, the guide pulley is a universal steel pulley, the wheel of the support pulley is a nylon wheel, the bracket of the support pulley is a steel frame, and the guide pulley and the support pulley are both welded to the surface of the inner pipe.
[0010] Preferably, the wheel diameter of the supporting pulley and the guide pulley are both 100 mm and the width is 50 mm.
[0011] Preferably, the two slideways are both made of steel, a plurality of positioning steel bars are arranged between the two slideways, and the distance between two adjacent positioning steel bars is 10 m.
[0012] Preferably, the diameter of the positioning steel bar is 10 mm, and both ends of the positioning steel bar are respectively welded to the surfaces of the two slide grooves.
[0013] Preferably, a plurality of filling holes are opened on the top of the inner pipe, and the distance between two adjacent filling holes is 60m.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] 1. The double-layer pipe pushing and drag reduction device is provided with a slideway and a guide pulley. With the help of the guide pulley, the inner pipe moves along the slideway into the outer pipe, thereby realizing accurate double-layer pipe pushing, avoiding damage to the anti-corrosion layer at the contact part of the inner and outer pipes, and prolonging the service life of the inner and outer pipes.
[0016] 2. The double-layer pipeline jacking drag reduction device is provided with a support pulley, which is arranged in the middle and lower part of the inner pipeline and located on both sides of the guide pulley, so as to play a role in positioning and supporting when the pipeline is out of the groove.
[0017] 3. The double-layer pipeline jacking drag reduction device ensures the fixation of the relative positions of the two slideways by setting a plurality of positioning steel bars, avoids the change of the slideway spacing caused by jacking, and enables the guide pulley to pass smoothly along the slideway. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the distribution structure of the first pulley assembly and the second pulley assembly of the utility model;
[0020] Figure 3 This is a side view of the structure of the utility model;
[0021] Figure 4 This is a schematic diagram of the distribution structure of the positioning steel bars of the utility model.
[0022] In the figure: 1, outer pipe; 2, inner pipe; 3, slideway; 4, first pulley assembly; 401, guide pulley; 5, second pulley assembly; 501, support pulley; 6, positioning steel bar; 7, filling hole. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-4 A double-layer pipeline jacking drag reduction device comprises: a slideway 3 installed on the inner wall of an outer pipeline 1 and a plurality of first pulley assemblies 4 installed on the surface of an inner pipeline 2. The number of slideways 3 is two, and the two slideways 3 are symmetrically arranged on the inner wall of the outer pipeline 1. The slideway 3 serves as a guide track during the jacking process of the inner pipeline 2, and is fixed to the bottom of the inner wall of the outer pipeline 1 by welding. The welding points are well treated with anti-corrosion. Each first pulley assembly 4 comprises two guide pulleys 401, and the two guide pulleys 401 are symmetrically connected to the surface of the inner pipeline 2. The guide pulleys 401 are connected to the inner wall of the slideway 3. With the help of the guide pulleys 401, the inner pipeline 2 rolls in the slideway 3, and then the inner pipeline 2 moves along the slideway 3 into the outer pipeline 1, thereby realizing the precise jacking of the double-layer jacking pipe, avoiding the damage of the anti-corrosion layer at the contact part of the inner and outer pipelines 1, and improving the service life of the inner pipeline 2 and the outer pipeline 1.
[0025] See also Figure 2 , wherein; a plurality of second pulley assemblies 5 are provided on the surface of the inner pipe 2, each second pulley assembly 5 includes two supporting pulleys 501, the two supporting pulleys 501 are symmetrically arranged on the surface of the inner pipe 2, and the two guide pulleys 401 are located between the two supporting pulleys 501, the guide pulley 401 is a universal steel pulley, the wheel of the supporting pulley 501 is a nylon wheel, the bracket of the supporting pulley 501 is a steel frame, the guide pulley 401 and the supporting pulley 501 are both welded to the surface of the inner pipe 2, and the wheel diameters of the supporting pulley 501 and the guide pulley 401 are both 100 mm and 50 mm wide.
[0026] See also Figure 3-4 The two slideways 3 are both made of steel. A plurality of positioning steel bars 6 are arranged between the two slideways 3. The distance between two adjacent positioning steel bars 6 is 10m. The diameter of the positioning steel bars 6 is 10mm. The two ends of the positioning steel bars 6 are respectively welded to the surfaces of the two slide grooves to ensure the relative position of the two slideways 3 is fixed, avoid pushing to cause the distance between the slideways 3 to change, and allow the guide pulley 401 to pass smoothly along the slideway 3.
[0027] Among them, a plurality of filling holes 7 are opened at the top of the inner pipe 2, and the distance between two adjacent filling holes 7 is 60m.
[0028] The slideway 3 is used as a guide track during the jacking process of the inner pipe 2. During the jacking process of the outer pipe 1, the position of the slideway 3 is calculated in advance. The slideway 3 is extended section by section as the outer pipe 1 is pushed forward, and is fixed to the bottom of the inner wall of the outer pipe 1 by welding. The welding points are well treated with anti-corrosion. The guide pulley 401 is a universal steel pulley, and the wheel of the support pulley 501 is a nylon wheel. The guide pulley 401 and the support pulley 501 are installed on the surface of the inner pipe 2. The position of the guide pulley 401 corresponds to the slideway 3. The single load of the guide pulley 401 is 2000kg, and the single load of the support pulley 501 is 500kg. The arrangement of the steel guide pulley 401 and the support pulley 501 is calculated according to the load of each guide pulley 401 and the support pulley 501. Spacing, the wheel diameter of the supporting pulley 501 and the guide pulley 401 are both 100mm and 50mm wide. With the help of the guide pulley 401 rolling in the slideway 3, the inner pipe 2 moves along the slideway 3 into the outer pipe 1, thereby realizing the precise jacking of the double-layer pipe, avoiding damage to the anti-corrosion layer at the contact part of the inner and outer pipes 1, and improving the service life of the inner pipe 2 and the outer pipe 1. The supporting pulley 501 is arranged in the middle and lower part of the inner pipe 2, and on both sides of the guide pulley 401, to play a role in positioning and supporting when the pipe is out of the groove. A plurality of positioning steel bars 6 are installed between the two slideways 3 to ensure the relative position of the two slideways 3 is fixed, avoid pushing and cause changes in the spacing of the slideways 3, and allow the guide pulley 401 to pass smoothly along the slideway 3.
[0029] The implementation steps of the embodiment are as follows:
[0030] Step 1: When the outer pipe 1 is pushed forward, the axial position of the outer pipe 1 is calculated according to the design position of the inner pipe 2 and the material specifications of the slideway 3, the guide pulley 401 and the support pulley 501, and the position accuracy of the inner pipe 2 is ensured by the position accuracy of the outer pipe 1.
[0031] Step 2: When the outer pipe 1 is pushed forward, the slideway 3 is installed simultaneously to form a slideway 3 with two relatively fixed positions.
[0032] Step 3: Before the inner pipe 2 is pushed, a guide pulley 401 is installed at the bottom of the inner pipe 2 relative to the slideway 3, so that the inner pipe is always in the predetermined track of the slideway 3 when being pushed.
[0033] Step 4: The inner pipe 2 is pushed forward in the fixed direction of the slideway 3 by a jacking device, thereby forming a double-layer pipe structure that meets the designed position.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A double-layer pipeline thrust reduction device, characterized in that: include: A slideway (3) installed on the inner wall of the outer pipe (1) and a plurality of first pulley assemblies (4) installed on the surface of the inner pipe (2), wherein the number of the slideways (3) is two, and the two slideways (3) are symmetrically arranged on the inner wall of the outer pipe (1); Each of the first pulley assemblies (4) comprises two guide pulleys (401), and the two guide pulleys (401) are symmetrically connected to the surface of the inner pipe (2), and the guide pulleys (401) are connected to the inner wall of the slideway (3).
2. A double-layer pipeline thrust reduction device according to claim 1, characterized in that: A plurality of second pulley assemblies (5) are provided on the surface of the inner pipe (2); Each second pulley assembly (5) comprises two supporting pulleys (501), the two supporting pulleys (501) are symmetrically arranged on the surface of the inner pipe (2), and the two guide pulleys (401) are located between the two supporting pulleys (501).
3. A double-layer pipeline thrust reduction device according to claim 2, characterized in that: The guide pulley (401) is a universal steel pulley, the wheel of the support pulley (501) is a nylon wheel, the bracket of the support pulley (501) is a steel frame, and the guide pulley (401) and the support pulley (501) are both welded to the surface of the inner pipe (2).
4. A double-layer pipeline thrust reduction device according to claim 3, characterized in that: The wheel diameters of the supporting pulley (501) and the guide pulley (401) are both 100 mm and 50 mm in width.
5. The double-layer pipeline thrust reduction device according to claim 1 is characterized in that: The two slideways (3) are both made of steel, a plurality of positioning steel bars (6) are arranged between the two slideways (3), and the distance between two adjacent positioning steel bars (6) is 10 m.
6. A double-layer pipeline thrust drag reduction device according to claim 5, characterized in that: The diameter of the positioning steel bar (6) is 10 mm, and the two ends of the positioning steel bar (6) are respectively welded to the surfaces of the two slide grooves.
7. A double-layer pipeline thrust drag reduction device according to claim 1, characterized in that: A plurality of filling holes (7) are provided on the top of the inner pipe (2), and the distance between two adjacent filling holes (7) is 60 m.