CN116677208A - Slip ring internal pipeline integrated installation method - Google Patents
Slip ring internal pipeline integrated installation method Download PDFInfo
- Publication number
- CN116677208A CN116677208A CN202310480895.2A CN202310480895A CN116677208A CN 116677208 A CN116677208 A CN 116677208A CN 202310480895 A CN202310480895 A CN 202310480895A CN 116677208 A CN116677208 A CN 116677208A
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- China
- Prior art keywords
- pipeline
- flange
- slip ring
- section
- integration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 title claims abstract description 19
- 230000010354 integration Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 14
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/003—Auxiliary devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention discloses a slip ring internal pipeline integrated installation method, which provides a scheme for constructing a scaffold tower to integrate internal pipelines in advance, transfers the slip ring internal pipeline integrated work to the outside of a slip ring, can synchronously carry out other related slip ring integrated work during pipeline integration, and provides a method for lifting a lower pipeline by using a lifting screw to reversely carry out pipeline assembly so as to protect a flange surface and a sealing ring and avoid damage or collision by considering the influence of factors such as the self weight of the pipeline, the levelness of the flange surface during assembly, the placement of the sealing ring and the like on the sealing performance and the integrity of a flange connection node. In addition, the invention is integrally hoisted into the slip ring after the flange bolt fastening and checking is completed at the joint, thereby effectively shortening the construction period, reducing the operation risk in the limited space and improving the integration efficiency and the integration quality of the pipeline in the slip ring.
Description
Technical Field
The invention relates to the field of slip ring installation in construction of a single-point mooring system of an inner tower in offshore oil engineering, in particular to an integrated installation method of an inner pipeline of a slip ring.
Background
The slip ring is core equipment of an inner tower single-point mooring system, the slip ring integrated installation relates to a plurality of cross operations of structures, machinery, pipelines, electricity, meters and the like, and hundreds of pipelines, cables, optical fibers, supports and the like are required to be installed in a limited space with smaller inner diameter during the slip ring integrated installation. The slip ring is composed of a plurality of slip ring units, the number of the slip ring units is increased, the number of internal pipelines is increased correspondingly, the pipeline arrangement is denser, and the integrated installation difficulty is higher.
The inner pipelines of the slip rings are connected by flanges, a compact flange and a steel IX-shaped sealing ring are generally adopted, the joint of the flange connection has extremely high requirements on tightness, and because the leakage inspection and the overhaul of the inner pipelines of the slip rings are difficult, the joint of the flange connection should ensure that the leakage does not occur in a service period, the flange surface and the sealing ring should be protected during installation, damage or collision are avoided, no gap is required to be fully closed between the two flange surfaces after integration, and the plug gauge at each position can not be inserted during inspection. Flange bolt tightening is generally performed as follows: 30% of final moment value crisscross sequential bolts are fastened; the cross sequential bolts with the final moment value of 60 percent are fastened; 100% final moment value crisscross sequential bolt fastening; 100% final torque value conventional sequential bolt tightening; after 24 hours, 100% final torque values were checked for routine sequential bolt tightening. The fastening of the flange bolts at the node positions is a key shutdown point to be detected for quality control. Strict requirements, complicated construction and labor and construction period consumption.
The integrated work of the inner pipeline of the slip ring is positioned on a key path of slip ring construction, so that the whole construction period is restricted, and the work efficiency of the operation in a limited space is low, the risk is high, and the construction quality is difficult to ensure.
The conventional method and the existing problems are as follows:
(1) For the situation that the number of the slip ring units and the number of the internal pipelines are small, the workload of the internal pipeline integration is small, and the pipeline integration can be performed after the pipeline is directly put into the slip ring section by section. And to the condition that slip ring unit and interior pipeline quantity are more, pipeline integrated work load and degree of difficulty increase, the space that the inside personnel of slip ring was allowed to be under construction is more narrow and small, and normal operating hydraulic torque spanner carries out flange bolt fastening degree of difficulty great, and work efficiency obviously reduces, influences the whole time limit for a project of slip ring integrated installation, simultaneously owing to involving the high altitude construction, needs special skill qualification personnel, has increased construction cost and risk.
(2) For the pipeline connected by the common flange, the leak checking and overhauling are easy to carry out, the process control of the flange connecting bolt fastening is not fine enough in construction, if the integration of the internal pipeline is carried out outside the equipment, the pipeline to be integrated in each section can be horizontally arranged on the ground for assembly integration in the conventional method, then the pipeline to be integrated is integrally and vertically hoisted and placed in the equipment, or a section of pipeline is vertically placed on the ground, the pipeline is stacked section by section from bottom to top, and then the flange bolt fastening is sequentially carried out on each node. However, the above conventional method is not suitable for the integration of the slip ring internal pipeline connected with the compact flange, because the compact flange has extremely high requirement on the tightness, the conventional method is extremely easy to collide and damage the flange surface or the sealing ring in the pipeline assembly process, and the integral hoisting and the stress effect of the self weight of the pipeline on the fastening bolts in the in-situ process of the pipeline are not considered, so that the flange node does not achieve the optimal sealing effect, a certain leakage risk exists, and the integrity and the tightness of the fastening of the flange bolts of each node after the integral hoisting of the pipeline is put into the in-situ inside the equipment cannot be ensured.
Disclosure of Invention
According to the slip ring internal pipeline integrated installation method disclosed by the invention, the slip ring internal pipeline integrated work is transferred to the outside of the slip ring, and other related slip ring integrated works can be synchronously carried out during pipeline integration, so that the construction period is shortened, and the installation quality is improved.
In order to solve the technical problems, the invention provides an integrated installation method of an inner pipeline of a slip ring, which is completed through the following steps of:
s1, building scaffold towers for slip ring internal pipeline integration, and respectively placing a group of scaffold towers on two sides of a pipeline to be integrated;
s2, hoisting a first section of pipeline by using a crane, placing the first section of pipeline on a pad pier close to a scaffold tower, adopting a rubber pad to perform isolation protection between the pad pier and a flange surface below the first section of pipeline, and keeping the first section of pipeline in a vertical state and enabling the flange surface above the first section of pipeline to be horizontal;
s3, hoisting a second section of pipeline by using a crane, slowly lowering the section of pipeline, gradually approaching the flange surface at the lower end of the section of pipeline to the flange surface of the first section of pipeline, checking and cleaning the flange surface, and preparing for pipeline assembly;
s4, installing 4 sets of special full-thread lifting screws on a flange at the lower end of the second section of pipeline, uniformly distributing the 4 sets of screws in the circumferential direction, placing a sealing ring into a groove of the flange at the upper end of the first section of pipeline, enabling the screws to penetrate through a flange bolt hole at the upper end of the first section of pipeline to connect two sections of pipelines, synchronously and manually rotating the 4 sets of screws, lifting the first section of pipeline below, observing the horizontal state of the flange surface, and ensuring equal distance between the two flange surfaces in the assembling process;
s5, after the two flange surfaces are contacted, taking out the lifting screw rods one by one, installing formal flange connecting bolts and manually screwing, fastening the flange bolts by using a hydraulic torque wrench according to a required torque value and a required process until the flange surfaces are closed, checking whether a feeler gauge can be inserted between the two flange surfaces, ensuring that the integrity and the tightness of flange connection at the joint meet the requirements, and checking;
s6, repeating the steps S3 to S5, continuously completing the installation and integration of the subsequent multi-section pipeline, hoisting the internal pipeline integrated on the scaffold tower by using a crane, placing the internal pipeline into the slip ring unit, and fastening a flange bolt of a pipeline connection node on the slip ring unit body, thereby completing the integration of the internal pipeline of the slip ring.
Further, in step S1, the scaffold tower is assembled by a scaffold and a plurality of tower modules, and the scaffold tower is set up by considering the station and operation of personnel, so that the pipeline flange bolting and fastening work can be conveniently completed.
Further, in step S2, the first section of pipeline may be temporarily attached and secured to the scaffold tower using a chain block or sling.
The invention has the technical effects that: the invention provides a scheme for constructing a scaffold tower to integrate internal pipelines in advance, the integration work of the internal pipelines of the slip ring is transferred to the outside of the slip ring, other related integration work of the slip ring can be synchronously carried out during pipeline integration, the influence of factors such as the self weight of the pipelines, the levelness of the flange surface during assembly, the placement of a sealing ring and the like on the sealing performance and the integrity of a flange connection node is considered, the flange surface and the sealing ring are protected, and damage or collision is avoided. In addition, the invention is integrally hoisted into the slip ring after the flange bolt fastening and checking is completed at the joint, thereby effectively shortening the construction period, reducing the operation risk in the limited space and improving the integration efficiency and the integration quality of the pipeline in the slip ring.
Drawings
Fig. 1 is a schematic illustration of the construction of a scaffolding tower and the placement of a first section of pipeline.
FIG. 2 is a schematic illustration of a second pipeline section being lowered and paired with a first pipeline section.
FIG. 3 is a schematic diagram of a jack screw lifting a first section of pipeline and pairing with a second section of internal pipeline.
Fig. 4 is a schematic diagram of the first pipeline section and the second pipeline section after the flange connection bolts are fastened.
Fig. 5 is a schematic view of adjacent pipe sections after flange connection.
Fig. 6 is a schematic view of the integration of internal piping into the slip ring.
Reference numerals: 1. the scaffold tower, 2, the loop wheel machine, 3, pad mound, 4, first section pipeline, 5, second section pipeline, 6, lifting screw rod, 7, flange bolt, 8, flange, 9, sealing washer, 10, slip ring, 11, slip ring inside pipeline.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to limit the invention, so that those skilled in the art may better understand the invention and practice it.
The embodiment of the invention provides a slip ring internal pipeline integrated installation method, which is completed by the following steps in combination with the drawings shown in 1-6:
s1, constructing a scaffold tower 1 for integrating the inner pipelines of the slip ring 10, and respectively placing a group of scaffold towers 1 on two sides of the pipelines to be integrated.
In step S1, the scaffold tower 1 is assembled from a scaffold and a plurality of tower modules, and the scaffold tower 1 is set up in consideration of the station and operation of personnel, so as to facilitate the completion of the connection and fastening work of the pipeline flange bolts 7.
S2, hoisting the first section of pipeline 4 by using a crane 2, placing the first section of pipeline 4 above a cushion pier 3 close to the scaffold tower 1, adopting a rubber pad between the cushion pier 3 and a flange surface below the first section of pipeline 4 to make isolation protection, and enabling the first section of pipeline 4 to be kept in a vertical state and enabling the flange surface above to be horizontal.
S3, hoisting a second section of pipeline 5 by using a crane 2, slowly lowering the section of pipeline, gradually approaching the flange surface at the lower end of the section of pipeline to the flange surface of the first section of pipeline 4, checking and cleaning the flange surface, and preparing for pipeline assembly.
In step S2, the first length of pipeline 4 may be temporarily attached and secured to the scaffolding tower 1 using a chain block or sling.
S4, installing 4 sets of special full-thread lifting screws 6 on the flange 8 at the lower end of the second section pipeline 5, evenly distributing the 4 sets of screws in the circumferential direction, placing the sealing ring 9 into a groove of the flange 8 at the upper end of the first section pipeline 4, enabling the screws to penetrate through flange bolt holes at the upper end of the first section pipeline 4 to connect two sections of pipelines, synchronously manually rotating the 4 sets of screws, lifting the first section pipeline 4 below, observing the horizontal state of the flange surface, and guaranteeing equal intervals between the two flange surfaces in the assembly process.
S5, after the two flange surfaces are contacted, the lifting screw rods 6 are taken out one by one, then formal flange bolts 7 are installed and screwed down manually, the flange bolts 7 are fastened by using a hydraulic torque wrench according to required torque values and processes until the flange surfaces are closed, a feeler gauge can be inserted between the two flange surfaces for checking, the integrity and the tightness of the connection of the flange 8 at the joint are ensured to meet the requirements, and the checking is finished.
S6, repeating the steps S4 to S5, installing and integrating the subsequent multi-section pipelines can be continuously completed, hoisting the internal pipeline integrated on the scaffold tower 1 by using the crane 2, placing the internal pipeline into the slip ring 10 unit, and fastening the flange bolts 7 of the pipeline connection node on the slip ring 10 unit body, so that the integration of the internal pipeline of the slip ring 10 is completed.
According to the invention, the integrated work of the pipeline 11 in the slip ring is transferred to the outside of the slip ring 10, and the other related integrated work of the slip ring 10 can be synchronously carried out during pipeline integration, so that the working efficiency is greatly improved.
Considering the influence of the factors such as the self weight of the pipeline, the levelness of the flange surface during assembly, the placement of the sealing ring 9 and the like on the tightness and the integrity of the connection joint of the flange 8, the flange surface and the sealing ring 9 are protected from damage or collision, and the invention provides a novel method for reversely assembling the pipeline by lifting the lower pipeline by using the lifting screw 6, so that the integrity and the tightness of the connection of the flange 8 are ensured to meet the requirements.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (3)
1. The slip ring internal pipeline integrated installation method is completed through the following steps of:
s1, building scaffold towers for slip ring internal pipeline integration, and respectively placing a group of scaffold towers on two sides of a pipeline to be integrated;
s2, hoisting a first section of pipeline by using a crane, placing the first section of pipeline on a pad pier close to a scaffold tower, adopting a rubber pad to perform isolation protection between the pad pier and a flange surface below the first section of pipeline, and keeping the first section of pipeline in a vertical state and enabling the flange surface above the first section of pipeline to be horizontal;
s3, hoisting a second section of pipeline by using a crane, slowly lowering the section of pipeline, gradually approaching the flange surface at the lower end of the section of pipeline to the flange surface of the first section of pipeline, checking and cleaning the flange surface, and preparing for pipeline assembly;
s4, installing 4 sets of special full-thread lifting screws on a flange at the lower end of the second section of pipeline, uniformly distributing the 4 sets of screws in the circumferential direction, placing a sealing ring into a groove of the flange at the upper end of the first section of pipeline, enabling the screws to penetrate through a flange bolt hole at the upper end of the first section of pipeline to connect two sections of pipelines, synchronously and manually rotating the 4 sets of screws, lifting the first section of pipeline below, observing the horizontal state of the flange surface, and ensuring equal distance between the two flange surfaces in the assembling process;
s5, after the two flange surfaces are contacted, taking out the lifting screw rods one by one, installing formal flange connecting bolts and manually screwing, fastening the flange bolts by using a hydraulic torque wrench according to a required torque value and a required process until the flange surfaces are closed, checking whether a feeler gauge can be inserted between the two flange surfaces, ensuring that the integrity and the tightness of flange connection at the joint meet the requirements, and checking;
s6, repeating the steps S3 to S5, continuously completing the installation and integration of the subsequent multi-section pipeline, hoisting the internal pipeline integrated on the scaffold tower by using a crane, placing the internal pipeline into the slip ring unit, and fastening a flange bolt of a pipeline connection node on the slip ring unit body, thereby completing the integration of the internal pipeline of the slip ring.
2. The slip ring internal pipeline integrated installation method according to claim 1, wherein: in step S1, the scaffold tower is assembled by a scaffold and a plurality of tower modules, and the scaffold tower is set up by considering the station and operation of personnel, so that the pipeline flange bolting and fastening work can be conveniently completed.
3. The slip ring internal pipeline integrated installation method according to claim 1, wherein: in step S2, the first length of pipeline may be temporarily attached and secured to the scaffolding tower using a chain block or sling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310480895.2A CN116677208A (en) | 2023-04-28 | 2023-04-28 | Slip ring internal pipeline integrated installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310480895.2A CN116677208A (en) | 2023-04-28 | 2023-04-28 | Slip ring internal pipeline integrated installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116677208A true CN116677208A (en) | 2023-09-01 |
Family
ID=87789860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310480895.2A Pending CN116677208A (en) | 2023-04-28 | 2023-04-28 | Slip ring internal pipeline integrated installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116677208A (en) |
-
2023
- 2023-04-28 CN CN202310480895.2A patent/CN116677208A/en active Pending
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