CN113932068B - Method for assembling overhead vibration isolation hanging bracket of spring in annular pipe gallery - Google Patents

Method for assembling overhead vibration isolation hanging bracket of spring in annular pipe gallery Download PDF

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Publication number
CN113932068B
CN113932068B CN202111190996.3A CN202111190996A CN113932068B CN 113932068 B CN113932068 B CN 113932068B CN 202111190996 A CN202111190996 A CN 202111190996A CN 113932068 B CN113932068 B CN 113932068B
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China
Prior art keywords
pipeline
cross arm
main
pipe gallery
main beam
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CN202111190996.3A
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CN113932068A (en
Inventor
申晋忠
晋欢欢
何雷
李春凯
李明振
李红霞
范锡涛
王毅
许诚
刘晓娟
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BEIJING MECHANICAL AND ELECTRICAL ENGINEERING GROUP CO LTD
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BEIJING MECHANICAL AND ELECTRICAL ENGINEERING GROUP CO LTD
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Priority to CN202111190996.3A priority Critical patent/CN113932068B/en
Priority to CN202310608220.1A priority patent/CN116576327A/en
Publication of CN113932068A publication Critical patent/CN113932068A/en
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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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/033—Noise absorbers
    • F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H7/00—Marking-out or setting-out work
    • B25H7/005—Marking-out or setting-out work for pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C5/00—Base supporting structures with legs
    • B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
    • 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
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Supports For Pipes And Cables (AREA)

Abstract

The invention discloses an assembly method of a spring overhead vibration isolation hanging bracket in an annular pipe gallery, wherein the spring overhead vibration isolation hanging bracket in the annular pipe gallery comprises a main beam, a main cross arm, a screw rod and a spring damper; the main beam is arranged on the upper part of the annular pipe gallery, and the two ends of the main beam are fixed on the inner wall of the annular pipe gallery; at least one main cross arm is arranged at the upper part of the main beam, and the main cross arm is connected with the main beam through a spring damper; a plurality of layers of cross arms are arranged at the lower part of the main beam corresponding to each main cross arm, the first layer of cross arms are hung on the main cross arms through screws, the lower layer of cross arms are hung on the upper layer of cross arms through screws, and pipe clamps are fixed on each layer of cross arms and used for clamping and fixing pipelines; the method comprises the following steps: step 1, prefabricating and processing a component; step 2, paying off by a pipe gallery; step 3, installing a connecting wallboard; step 4, installing a main beam; step 5, installing a main cross arm and a spring damper; step 6, hoisting and transporting the pipeline; step 7, scribing, cutting and chamfering the pipeline joint; and 8, installing the suspender, the cross arm and the pipe clamp, and butt-jointing and welding the pipelines.

Description

Method for assembling overhead vibration isolation hanging bracket of spring in annular pipe gallery
Technical Field
The invention relates to the field of equipment installation, in particular to an assembly method of a spring overhead vibration isolation hanging bracket in an annular pipe gallery.
Background
The allowable vibration standard of the environment is strictly required by the electronic industry factory building and large-scale scientific research devices, and in order to prevent the vibration of the water flow in the pipeline from being transmitted outwards, a spring vibration isolator is usually arranged on a pipeline support and hanger to be isolated from surrounding structures. The conventional installation method of the vibration isolator for the pipeline is to place the spring vibration isolator at the lower part of the pipeline, but when the multi-layer pipeline is arranged up and down, each pipeline needs two layers of steel brackets and independent spring vibration isolators, and the occupied space is large. Especially when the gallery space is relatively low, not so many spring isolators are installed. In the annular gallery, when the temperature of the medium in the pipe changes, the thermal deformation of the pipe is radial, i.e. the pipe moves transversely, while the spring vibration isolator can only bear vertical pressure and cannot bear transverse force. So the conventional method cannot meet the use requirements of the annular pipe gallery.
Therefore, the invention provides an assembly method of the overhead vibration isolation hanging bracket of the spring in the annular pipe gallery, which can well solve the problems.
Disclosure of Invention
The invention is realized by adopting the following technical scheme:
a spring overhead vibration isolation hanging bracket assembly method in an annular pipe gallery, wherein:
the spring overhead vibration isolation hanging bracket in the annular pipe gallery comprises a main beam, a main cross arm, a screw rod and a spring damper, wherein the main beam is arranged on the upper part of the annular pipe gallery, and two ends of the main beam are fixed on the inner wall of the annular pipe gallery; at least one main cross arm is arranged at the upper part of the main beam, and the main cross arm is connected with the main beam through a spring damper; a plurality of layers of cross arms are arranged at the lower part of the main beam corresponding to each main cross arm, the first layer of cross arms are hung on the main cross arms through screws, the lower layer of cross arms are hung on the upper layer of cross arms through screws, and pipe clamps are fixed on each layer of cross arms and used for clamping and fixing pipelines;
the method comprises the following steps:
step 1, prefabricating and processing a component;
step 2, paying off by a pipe gallery;
step 3, installing a connecting wallboard;
step 4, installing a main beam;
step 5, installing a main cross arm and a spring damper;
step 6, hoisting and transporting the pipeline;
step 7, scribing and cutting a groove on the pipeline joint;
and 8, installing the suspender, the cross arm and the pipe clamp, and butt-jointing and welding the pipelines.
The assembling method comprises the following steps of: (1) Prefabricating a main cross arm, wherein the main cross arm is made of rectangular steel, mounting holes of two screws are processed at two ends of the rectangular steel, and mounting holes of two spring dampers are processed in the middle of the two screw mounting holes; (2) Prefabricating a main beam, namely welding two channel steels back to back by using a steel plate to form a whole main beam, and reserving a gap in the middle; (3) Each layer of cross arm is prefabricated, two channel steel are welded back to back by steel plates to form a whole, and each layer of cross arm for supporting the pipeline is formed.
The assembly method, wherein the step 2 pipe gallery paying-off comprises the following steps: the elevation line 1m away from the ground finishing surface is firstly discharged on the side wall of the pipe gallery, and then the central line of the bracket connecting wall plate is discharged on the side wall of the pipe gallery according to the position of the pipeline bracket in the drawing.
The assembly method, wherein the step 2 pipe gallery paying-off comprises the following steps: and lifting the prefabricated girder to a preset height, leveling and aligning by using an instrument, spot-welding and fixing the prefabricated girder with the connecting wallboard, spot-welding and fixing the upper and lower rib plates with the connecting wallboard and the girder, and finally welding the upper and lower rib plates into a whole.
The assembly method, wherein the step 5 of installing the main cross arm and the spring damper comprises the following steps: the spring damper and the main cross arm are assembled into a whole in advance on the ground, then the main cross arm is lifted to the upper part of the main beam, and the foundation bolts of the spring damper pass through the reserved holes of the main beam connecting steel plates and then are fixed on the main beam.
The assembling method, wherein the step 6 pipeline hoisting transportation comprises the following steps: when the pipeline is close to the bottom of the pipe gallery, the head and the tail of the pipeline are respectively placed on the platform main bodies of the transportation platforms of the two combined pipeline transportation lifting devices, two ground tanks are placed under each platform, the pipeline is horizontally transported in the pipe gallery by the traction platform, after the pipeline is transported to the corresponding position, the ground tanks are twisted by 90 degrees and transversely moved, the pipeline can be moved to the installation position of the side edge of the pipe gallery, the platform main bodies are lifted by the jack, the ground tanks are withdrawn, and the jack is put down, so that the platform falls on the ground of the pipe gallery.
The assembly method comprises the steps that the combined pipeline transportation lifting device comprises a transportation platform and a lifting portal frame, the transportation platform is used for detachably installing the lifting portal frame and comprises a platform main body, a column type base and a ground tank, wherein two column type bases are oppositely installed on two sides of the top surface of the platform main body, the column type bases are provided with jacks, the jacks of the column type bases are used for being inserted into the lifting portal frame, and the ground tank is used for supporting the platform main body.
The assembly method comprises the following steps: after the pipeline is in place, inserting the inserted link of the lowest upright post into the jack of the upright post base, inserting the inserted link of the middle upright post into the jack of the lower upright post, and finally inserting the inserted link of the cross beam into the jack of the upright post, thereby splicing the socket upright post and the cross beam into a portal frame, hanging a chain block on the cross beam, hoisting and lifting the first pipeline, and after the first pipeline is installed, installing a second pipeline and a third pipeline in sequence, wherein the portal frame can be adjusted to a proper height through the combination of the upright posts with different lengths in order to adapt to the elevation of the pipeline during the hoisting.
The assembling method comprises the following steps of marking, cutting and chamfering the pipeline joint in the step 7: marking the widest part and the narrowest part of the to-be-cut bevel on a pipeline according to the bevel cutting size determined by calculation in advance, installing a scribing tool at the widest part of the to-be-cut bevel after the pipeline is lifted to a specified height, adjusting the position of the scribing tool to enable the axis of the pipeline to be vertical to a fixed plate, enabling the upper edge of the scribing tool to be horizontal, fixing the fixed plate firmly, enabling the movable plate to perform circular motion around a hinge by pulling a pull rod, enabling the movable plate to tightly screw two limit nuts on the pull rod at the narrowest part of the bevel, enabling the movable plate to clamp the movable plate, enabling a fixed and unchanged angle between the movable plate and the fixed plate to be maintained, and drawing a circle of elliptic lines on the outer surface of the pipeline along the side surface of the movable plate by using a pen; after the scribing is completed, cutting the pipeline along the scribing by using a cutting air gun; and after cutting, chamfering the pipeline by using a polishing machine. And the same method is used for scribing, cutting and chamfering one end of the other pipeline, and two opposite bevel ports form a pipeline joint with an axis deflected.
The assembly method comprises the following steps: the diagonal marking tool for pipeline splicing comprises a fixed plate, a movable plate and a pull rod, wherein the fixed plate and the movable plate are connected in a rotatable mode, a round hole for a pipeline to pass through is formed in the center of each of the fixed plate and the movable plate, one end of the pull rod is rotatably connected with the movable plate, the other end of the pull rod passes through a hole in the fixed plate, a plurality of fixing pieces are arranged on the fixed plate, and the fixing pieces are used for fixing the fixed plate on the pipeline.
The assembling method comprises the following steps of hanging rods, cross arms, pipe clamp installation, pipeline butt joint and welding: after the groove is cut, the screws on the two sides of the pipeline and the cross arm below the pipeline are installed, the upper parts of the screws are inserted into the gaps of the main beam and the screw installation holes of the main cross arm on the two sides of the first-stage pipeline, the screws are locked by nuts, the lower parts of the screws are inserted into the gaps of the first-stage cross arm and are locked by the nuts, the nuts are provided with washers, the upper parts of the screws are inserted into the gaps of the upper-stage cross arm on the two sides of the secondary pipeline and are locked by the nuts, and the lower parts of the screws are inserted into the gaps of the first-stage cross arm and are locked by the nuts; the nut is provided with a backing plate and a gasket below, the backing plate and the gasket cover a gap between two channel steel of the cross arm, the screw is inserted into the gasket and the steel backing plate, and the steel backing plate is in direct contact with the channel steel. The method comprises the steps of clamping and fixing pipelines on a cross arm by using a pipe clamp, arranging a heat-insulating cushion block between the pipe clamp and the pipelines, clamping the pipe clamp on the heat-insulating cushion block, inserting two ends of the pipe clamp into gaps of the cross arm and locking the pipe clamp by using nuts, after the positions and elevation of the pipelines are adjusted, enabling inclined openings of the two pipelines to be opposite to each other, enabling the gaps to be uniform, then spot-welding and fixing an interface, welding a backing plate and the cross arm, welding a circle of the backing plate along the opposite opening of the pipelines, welding and connecting the two pipelines, and enabling the welding seam to be free of leakage points;
the utility model provides a spring overhead type vibration isolation gallows in ring pipe corridor, includes girder, main cross arm, screw rod and spring damper, wherein: the main beam is arranged on the upper part of the annular pipe gallery, and the two ends of the main beam are fixed on the inner wall of the annular pipe gallery; at least one main cross arm is arranged at the upper part of the main beam, and the main cross arm is connected with the main beam through a spring damper; corresponding to each main cross arm, a plurality of layers of cross arms are arranged at the lower part of the main beam, a first layer of cross arms are hung on the main cross arms through screws, a lower layer of cross arms are hung on the upper layer of cross arms through screws, and pipe clamps are fixed on each layer of cross arms and used for clamping and fixing pipelines.
The vibration isolation hanger for the annular pipe gallery, wherein: connecting wallboards are welded at two ends of the girder, a plurality of mounting through holes are formed in the connecting wallboards, and expansion bolts are inserted into the mounting through holes and mounting holes formed in the inner wall of the annular pipe gallery in advance to fix the girder; a plurality of rib plates are welded between the connecting wall plates and the main beam.
The vibration isolation hanger for the annular pipe gallery, wherein: at least two spring dampers are arranged between each main cross arm and the main beam.
The vibration isolation hanger for the annular pipe gallery, wherein: the main beam is formed by connecting two channel steel back to back by using a steel plate into a whole, a gap is reserved between the channel steel, a screw rod passes through the gap, and the length dimension of the gap is larger than the outer diameter of the screw rod; and steel plates are welded under the upper spring shock absorber of the main beam, two sides of each steel plate are welded with the steel grooves, the upper surface of each steel plate is flush with the upper side plate of the channel steel, and two holes are formed in each steel plate and are used for fixing the spring shock absorber through bolts.
The vibration isolation hanger for the annular pipe gallery, wherein: the main cross arms are provided with mounting holes, one ends of the two screw rods are inserted into the mounting holes of one main cross arm and then locked by the nuts, and the other ends of the two screw rods are inserted into the gaps between the two channel steels of the first layer of cross arm and then locked by the nuts; the first layer cross arm and the lower layer cross arm are formed by welding two channel steel back to back, a gap is reserved between the two channel steel, the length dimension of the gap is larger than the outer diameter of the screw rod, a steel plate is welded under the pipeline, two sides of the steel plate are welded with the channel steel together, the upper surface is flush with the channel steel, one end of each screw rod is inserted into the gap of the lower layer cross arm and then locked through a nut, and the other end of each screw rod is inserted into the gap of the upper layer cross arm and then locked through the nut.
The vibration isolation hanger for the annular pipe gallery, wherein: the pipe clamp is arranged between the two screws.
The vibration isolation hanger for the annular pipe gallery, wherein: the main beam, the main cross arm, the cross arm and the screw are all made of steel.
The vibration isolation hanger for the annular pipe gallery, wherein: four rib plates are welded between the connecting wall plates and the main beam in a crisscross manner.
The vibration isolation hanger for the annular pipe gallery, wherein: the upper layer cross arm and the next layer cross arm are arranged at a preset distance.
The vibration isolation hanger for the annular pipe gallery, wherein: the plurality of main cross arms are arranged at a predetermined distance in the lateral direction.
The utility model provides a modular pipeline transportation hoisting apparatus, includes transport platform and jack-up portal, and transport platform is used for detachable installation jack-up portal, wherein: the transportation platform comprises a platform main body, a column type base and a ground tank, wherein two column type bases are oppositely arranged on two sides of the top surface of the platform main body, the column type bases are provided with jacks, the jacks of the column type bases are used for inserting lifting door frames, and the ground tank is used for supporting the platform main body.
The combined type pipeline transportation lifting device comprises: the platform main body is of a rectangular frame structure and is formed by welding four frame rods in an end-to-end mode.
The combined type pipeline transportation lifting device comprises: each frame rod is formed by butt-welding and splicing two channel steels.
The combined type pipeline transportation lifting device comprises: the column base comprises two steel pipes welded on the top surfaces of two opposite frame rods.
The combined type pipeline transportation lifting device comprises: the hoisting portal frame comprises a socket type stand column and a cross beam, wherein the socket type stand column comprises a stand column main body and a plug rod, the stand column main body is provided with a jack, and the cross beam comprises a cross rod and vertical rods welded at two ends of the cross rod.
The combined type pipeline transportation lifting device comprises: one end of the upright post main body is provided with an inserting hole, the other end of the upright post main body is welded with a stop plate, the inserting rod is welded at the lower part of the stop plate, and the inserting rod and the upright post main body are coaxially arranged.
The combined type pipeline transportation lifting device comprises: the external diameter of inserted link is less than the jack diameter of stand main part, and the size of end shield peripheral is greater than the outer wall size of stand main part.
The combined type pipeline transportation lifting device comprises: the upright post main body and the inserted link are both made of steel pipes, and the stop plate is a round steel plate.
The combined type pipeline transportation lifting device comprises: the montant includes montant main part and inserted bar, and montant main part one end welding is in horizontal pole one end, and the other end welding has the end stop board, and the inserted bar welding is in the backstop board lower part.
The combined type pipeline transportation lifting device comprises: the outer diameter of the inserted link is smaller than the diameter of the insertion hole of the upright post main body, and the size of the outer periphery of the stop plate is larger than the size of the outer wall of the upright post main body; the vertical rod main body and the inserted link are made of seamless steel pipes, and the stop plate is a round steel plate.
The utility model provides a pipeline concatenation is with bevel connection marking tool, includes a fixed plate, a fly leaf and a pull rod, wherein: the rotatable connection between fixed plate and the fly leaf, fixed plate and fly leaf center all open and have a round hole that supplies the pipeline to pass, and pull rod one end rotatable is connected with the fly leaf, and the pull rod other end passes from the trompil on the fixed plate, is equipped with a plurality of mounting on the fixed plate, and the mounting is used for fixing the fixed plate on the pipeline.
The pipeline concatenation is with bevel connection marking tool, wherein: wherein the fixed plate and the movable plate are square plates, the external dimensions are consistent, and the diameters of the round holes on the fixed plate and the movable plate are the same.
The pipeline concatenation is with bevel connection marking tool, wherein: the fixed plate and the movable plate are connected through at least two hinges, and the hinges are fixed on the same side edge of the fixed plate and the movable plate.
The pipeline concatenation is with bevel connection marking tool, wherein: the fixing piece comprises 4 nuts which are welded on the upper side, the lower side, the left side and the right side of the round hole of the fixing plate respectively, and bolts penetrating into the nuts.
The pipeline concatenation is with bevel connection marking tool, wherein: the pull rod is a harness cord bolt, the pull rod passes through the hole on the fixed plate, two limit nuts are respectively arranged on two sides of the hole of the fixed plate, and the two limit nuts are arranged on the pull rod.
The pipeline concatenation is with bevel connection marking tool, wherein: two omega-shaped clips are fixed on the movable plate, one end of the pull rod is provided with a T-shaped structure, and two ends of the T-shaped structure are rotatably inserted into the two omega-shaped clips.
The pipeline concatenation is with bevel connection marking tool, wherein: the fixed plate and the movable plate are made of steel plates.
Drawings
FIG. 1 is a front view of a spring-overhead vibration isolation hanger in an annular duct gallery;
FIG. 2 is a side view of a spring-overhead vibration isolation hanger in an annular tube gallery;
FIG. 3 is a schematic view of a main cross arm structure;
FIG. 4 is a schematic view of a main beam structure;
FIG. 5 is a schematic view of a cross arm structure;
FIG. 6 is a schematic diagram of a wall panel structure;
FIG. 7 is a schematic view of a main beam mounting structure;
FIG. 8 is a schematic view of a main cross arm mounting structure;
FIG. 9 is a schematic view of a transport platform structure;
FIG. 10 is a schematic view of the main body structure of the transport platform;
FIG. 11 is a schematic view of pipeline transportation;
FIG. 12 is a schematic view of a gantry construction;
FIG. 13 is a schematic view of a first layer pipeline hoist;
FIG. 14 is a schematic view of a second layer pipeline hoist;
FIG. 15 is a schematic view of a second layer pipeline hoist;
FIG. 16 is a top view of a diagonal draw tool for pipe splicing;
FIG. 17 is a side view of a diagonal marking tool for pipe splicing;
FIG. 18 is an enlarged partial view of the upper portion of the pipe splicing diagonal marking tool;
FIG. 19 is an enlarged partial view of the lower portion of the diagonal draw tool for pipe splicing;
FIG. 20 is a schematic illustration of pipe cutting using a pipe splicing diagonal draw tool;
fig. 21 is a schematic view of a pipe splice arc.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings.
First, the structure of the spring-top vibration isolation hanger in the annular pipe gallery will be described in detail with reference to fig. 1 and 2.
As shown in fig. 1 and 2, the spring-top vibration isolation hanger in the annular duct includes a main beam 12, a main cross arm 11, a plurality of cross arms 15, a plurality of screws 14, and a spring damper 13. A spring-overhead vibration isolation hanger in the annular tube gallery is mounted in the annular tube gallery 18 for mounting the pipe 19. The main beam 12, the main cross arm 11, the cross arms 15 and the screws 14 are all made of steel.
Wherein the girder 12 is installed on the upper portion of the annular pipe gallery 18, two ends of the girder 12 are fixed on the inner wall of the annular pipe gallery 18, as shown in fig. 1, two ends of the girder 12 are welded with a connecting wall plate 121, a plurality of installation through holes are formed in the connecting wall plate 121, and expansion bolts 17 are inserted into the installation through holes and the installation holes formed in the inner wall of the annular pipe gallery 18 in advance to fix the girder 12. Four rib plates 121 are welded between the connecting wall plates 121 and the main beam 12 in a crisscross manner so as to strengthen the connection strength between the main beam 12 and the connecting wall plates 121.
At least one main cross arm 11 is arranged on the upper part of the main beam 12, the main cross arm 11 is connected with the main beam 12 through spring shock absorbers 13, and at least two spring shock absorbers 13 are arranged between each main cross arm 11 and the main beam 12. The plurality of main cross arms 11 are arranged at a predetermined distance in the lateral direction. Each main cross arm 11 is made of rectangular steel, each main cross arm is provided with a mounting hole, one end of each screw rod is inserted into the mounting hole of one main cross arm and then locked through a nut, and the other end of each screw rod is inserted into a gap between two channel steels of the first layer of cross arm and then locked through the nut.
At least two layers of cross arms 15 are arranged at the lower part of the main beam 12 corresponding to each main cross arm 11, wherein a first layer of cross arms 15 are hung on the main cross arms 11 through screws 14, a second layer of cross arms 15 are hung on the first layer of cross arms 15 through screws 14, and so on. Each layer of cross arm 15 is fixedly provided with a pipe clamp 16, the pipe clamp 16 is provided with an annular bayonet, and the pipeline 19 is clamped and fixed by the pipe clamp 16. The upper layer cross arm 15 is spaced apart from the next layer cross arm 15 by a predetermined distance. As shown in fig. 2, the pipe 19 is wrapped with a heat insulating layer 191 (heat insulating pad).
The girder 12 is provided with a gap for the screw 14 to pass through, and the length dimension of the gap is larger than the outer diameter of the screw 14, so that a moving space can be provided for the screw 14 when the pipeline moves radially due to thermal deformation. One end of each of the two screws 14 is inserted into the mounting hole of the main cross arm 11 and then locked by the nut, and the other end is inserted into the gap of the first layer cross arm 15 and then locked by the nut. A pipe clamp 16 is mounted between the two screws 14. Specifically, the girder 12 is formed by connecting two channel steels back to back with steel plates into a whole, gaps are reserved between the channel steels, specifically, steel plates are welded under the spring damper on the girder, the length of the steel plates is consistent with that of the spring damper, two sides of the steel plates are welded with the steel grooves together, the upper surfaces of the steel plates are flush with the upper side plates of the channel steels, the steel plates are used for supporting and fixing the spring damper together with the channel steels on the two sides, and two holes are formed in each steel plate and used for fixing the spring damper through bolts.
The first layer cross arm 15 and the cross arm 15 of the lower floor are formed by welding two channel steel back to back, a gap is reserved between the two channel steel, the length dimension of the gap is larger than the outer diameter of the screw rod 14, a moving space can be provided for the screw rod 14 when a pipeline moves radially due to thermal deformation, a steel plate is welded in the gap right below the pipeline, the length of the steel plate is identical to the outer diameter of the pipeline, two sides of the steel plate are welded with the channel steel together, and the upper surface of the steel plate is flush with the upper side plate of the channel steel. One end of each of the two screws 14 is inserted into a gap of the upper layer cross arm 15 and then locked by a nut, and the other end is inserted into a gap of the lower layer cross arm 15 and then locked by a nut. A pipe clamp 16 is mounted between the two screws 14 for clamping the pipe.
The assembly method of the spring overhead vibration isolation hanging bracket in the annular pipe gallery comprises the following steps of:
step 1, prefabricating and processing a component;
step 2, paying off by a pipe gallery;
step 3, installing a connecting wallboard;
step 4, installing a main beam;
step 5, installing a main cross arm and a spring damper;
step 6, hoisting and transporting the pipeline;
step 7, scribing, cutting and chamfering the pipeline joint;
and 8, hanging rods, cross arms, pipe clamps, installing and welding the pipeline butt joint.
Step 1, prefabrication processing of the component comprises the following steps:
(1) Prefabrication of main cross arm
As shown in FIG. 3, the main cross arm is made of rectangular steel, two screw bolt mounting holes are processed at two ends of the rectangular steel, and two spring damper mounting holes are processed in the middle of the two screw bolt mounting holes.
(2) Girder prefabrication
As shown in fig. 4, two channel steels are welded back to back by steel plates to form a whole body to form a main beam, and a gap is reserved in the middle, so that the screw rod can be conveniently penetrated. The gap width is 100mm, four connecting steel plates with the thickness of 20mm are welded on the upper parts of two channel steel, the upper surfaces of the connecting steel plates are flush with the upper side wall of the channel steel, the width of the steel plates is 100mm, the length of the steel plates is 10mm longer than that of the spring damper, and mounting holes of the spring damper are reserved on two sides of the connecting steel plates. Three connecting steel plates are welded in the lower parts of the two channel steels, the sizes of the steel plates are 100mm multiplied by 10mm, the lower surfaces of the steel plates are flush with the lower side wall of the channel steel, and the steel plates and the upper connecting plates are used for enabling the section of the main beam to form a rectangle together without deformation.
(3) Prefabrication of each layer of cross arm
Two channel steels are welded back to back by steel plates to form a whole body, each layer of cross arm for supporting the pipeline is formed, and as shown in fig. 5, a gap reserved between the two channel steels is used for threading a screw rod, and the gap is 50mm wide. The upper and lower connecting plates are adopted to weld the channel steel into a whole, the length of the upper connecting plate is the same as the outer diameter of the pipeline, the length of the lower connecting plate is 200mm, and the upper and lower surfaces of the upper and lower connecting plates are respectively flush with the upper side wall and the lower side wall of the channel steel. The upper connecting plate is positioned under the pipeline and used for supporting the pipeline and the insulating cushion block, and the lower connecting plate is positioned under the upper connecting plate and used for preventing the cross arm from deforming. The gap between the channel steels is opened at two sides of the connecting plate, so that the screw rod is convenient to transversely install.
Step 2 piping lane unwrapping wire includes: the elevation line 1m away from the ground finishing surface is firstly discharged on the side wall of the pipe gallery, and then the central line of the bracket connecting wall plate is discharged on the side wall of the pipe gallery according to the position of the pipeline bracket in the drawing.
Step 3, installing the connecting wallboard comprises the following steps: the wall connecting plate is rectangular steel plate, holes with preset diameters and intervals are drilled on the steel plate, the center of the wall connecting plate is aligned with the center line of the bracket wall connecting plate on the side wall of the pipe gallery, the position of the holes on the steel plate is marked on the wall by a marker pen, the position of the steel bars inside the wall is detected by a steel bar detector before punching, if the positions of the holes are found, the positions of the holes are adjusted, meanwhile, the holes are drilled again at the corresponding positions on the wall connecting plate, the wall connecting plate is fixed on the side wall by adopting expansion bolts, and the wall connecting plate is the steel plate.
Step 4, girder installation includes: and lifting the prefabricated girder to a preset height, leveling and aligning by using an instrument, and then spot-welding and fixing with the connecting wallboard. And the upper rib plate and the lower rib plate are fixed with the connecting wall plate and the main beam by spot welding. Finally, the three are welded into a whole, as shown in fig. 7.
Step 5, mounting the main cross arm and the spring damper comprises: assembling the spring damper and the main cross arm into a whole in advance on the ground, aligning the mounting holes at the tops of the two spring dampers with the lower holes of the mounting holes of the main cross arm spring damper, inserting bolts, mounting nuts from the lower holes of the mounting holes of the main cross arm spring damper, penetrating into rectangular steel by using a socket wrench, and screwing the bolts, so that the spring damper and the main cross arm are assembled into a whole; the main cross arm is lifted to the upper part of the main beam, and the foundation bolts of the spring damper pass through the reserved holes of the main beam connecting steel plates and are then fixed on the main beam, as shown in fig. 8.
The following describes the pipeline hoisting transportation in step 6:
horizontal transportation of a pipeline in a pipe gallery and lifting and hoisting always belong to technical problems in the pipeline installation process, and the horizontal transportation is difficult to turn because the pipeline can only travel along the axis direction of the pipeline, lifting equipment is required to be erected during hoisting, the construction is complex and complicated, and the installation and the disassembly are difficult. The invention therefore proposes a combined pipeline transportation lifting device for transporting and lifting pipelines in a pipe gallery.
As shown in fig. 9-12, the modular pipeline transport lifting apparatus includes a transport platform and a lifting mast removably mounted to the transport platform.
As shown in fig. 9, the transport platform comprises a platform main body 21, a column base 22 and a ground tank 23, wherein two column bases 22 are oppositely arranged on two sides of the top surface of the platform main body 21, the column bases 22 are provided with jacks, and the ground tank 23 is used for supporting the platform main body 21. As shown in fig. 9 to 10, the platform main body 21 has a rectangular frame structure, and is formed by welding four frame rods 211 end to end, and each frame rod 211 is formed by butt welding and splicing two channel steel. The two column bases 22 are formed of two steel pipes welded to the top surfaces of the two opposite frame bars 211, respectively. A U-shaped pull ring is welded with phi 20 round steel at the front of the platform body 21 for connecting the traction apparatus.
As shown in fig. 12, the lifting portal comprises a socket type upright post 26 and a cross beam 25, the socket type upright post 26 comprises an upright post main body 261 and an inserting rod 262, one end of the upright post main body 261 is provided with an inserting hole, the other end of the upright post main body is welded with a stop plate 262, the inserting rod 263 is welded at the lower part of the stop plate 262, and the inserting rod 263 and the upright post main body 261 are coaxially arranged. The outer diameter of the plunger 263 is smaller than the diameter of the insertion hole of the column body 261, and the outer circumference of the stopper plate 262 is larger than the outer wall of the column body 261. The column body 261 and the plunger 263 are both made of seamless steel pipe, and the stopper plate 262 is a circular steel plate. The cross beam 25 includes a cross beam 254 and vertical bars welded to both ends of the cross beam 254. The montant includes montant main part 251 and inserted bar 253, and montant main part 251 one end welding has backstop board 252 in horizontal pole 264 one end, and the other end welding has backstop board 252, and inserted bar 253 welds in backstop board 252 lower part, and inserted bar 253 and montant main part 251 coaxial setting. The outside diameter of the insert rod 253 is smaller than the diameter of the insertion hole of the column main body 261, and the size of the outer periphery of the stopper plate 252 is larger than the outer wall size of the column main body 261. Both the stem body 251 and the spigot 253 are made of seamless steel pipe, and the stopper plate 252 is a circular steel plate.
The pipeline transportation mode is as follows: when the pipeline is placed into the pipe gallery by the automobile crane at the lifting hole, and the pipeline is close to the bottom of the pipe gallery, the head and the tail of the pipeline 24 are respectively placed on the platform main bodies 21 of the two conveying platforms, two ground tanks 23 are placed under each platform, the traction ropes are connected with the U-shaped pull rings, and the pipeline 24 can be horizontally conveyed in the pipe gallery under the traction of manpower or a winch. The column bases 22 on either side of the platform function to prevent the pipe 24 from rolling sideways, as shown in fig. 11. After the pipeline 24 is transported to the corresponding position, the ground tank 23 is twisted by 90 degrees, and the pipeline 24 can be moved to the installation position on the side edge of the pipe gallery by transverse movement. Lifting the platform main body 21 by using a jack, withdrawing the ground tank 23, and lowering the jack to enable the platform to fall onto the pipe gallery ground.
After the pipeline is in place, the inserted link of the lowest upright post is inserted into the jack of the upright post base, the inserted link of the middle upright post is inserted into the jack of the lower upright post, and finally the inserted link of the cross beam 25 is inserted into the jack of the upright post 26, so that the socket upright post 26 and the cross beam 25 are assembled into a portal frame, the position of the lifting portal frame is required to be kept away from the position of the pipeline formally provided with the vibration isolation hanging frame, and the lifting hanging frame of the first pipeline can be carried out by hanging the chain block 27 on the cross beam, as shown in fig. 13. After the first pipe is installed, the second pipe and the third pipe can be installed sequentially, as shown in fig. 14 and 15, and in order to adapt to the elevation of the pipes, the upright post of the portal frame is shortened to a proper height.
The following describes the pipeline joint scribing, cutting and chamfering in step 7 in detail:
in the installation and construction process of the annular pipe gallery pipe, an arc is spliced by a linear pipe section by adopting a polygonal method, as shown in fig. 21. Before pipeline butt welding, need cut into the bevel connection of certain angle with two pipe ends, the axis of pipeline just can realize deflecting, and conventional construction generally is that constructor cuts the pipeline after marking off according to experience, neither accurate cause pipeline alignment scheduling problem easily again. In order to enable the edge to be flat and accurate after the bevel is cut, the invention provides a bevel scribing tool for pipeline splicing.
As shown in fig. 16 to 20, the diagonal marking tool for pipe splicing includes a fixed plate 31, a movable plate 32, and a tie 33.
The fixed plate 31 and the movable plate 32 are square plates, the external dimensions are consistent, the plate is made of 3mm thick steel plates, the side length of the plate is 100mm larger than the outer diameter of the pipeline 38, round holes with the same diameter are respectively formed in the centers of the fixed plate 31 and the movable plate 32, the diameter of each round hole is 20mm larger than the outer diameter of the pipeline 38, and the minimum distance from the plate edge to the hole edge is 40mm.
The fixed plate 31 and the movable plate 32 are connected by at least two hinges 33, which are fixed on the same side of the fixed plate and the movable plate.
1 nut 36 is welded at the positions, close to the edges, of the round hole of the fixing plate 31, the nuts 36 are penetrated with bolts 35, the pipeline 38 is inserted into the round hole of the fixing plate 31, the fixing plate 31 can be fixed on the end head of the pipeline 38 by adjusting the length of the bolts 35 screwed into the nuts 36, and gaps between the edges of the round hole of the fixing plate 31 and the outer wall of the pipeline 38 are uniform and consistent by fine adjustment of the four bolts 35, so that the pipeline 38 is centered.
The pull rod 37 is a harness cord bolt, the pull rod 37 passes through the hole 311 on the fixed plate 31, two limit nuts 39 are respectively arranged on two sides of the hole 311 of the fixed plate 31, and the two limit nuts 39 are arranged on the pull rod 37; two omega-shaped clips 34 are fixed on the movable plate 32, two ends of each clip 34 are fixed on the movable plate 32 by bolts, one end of a pull rod 37 is provided with a T-shaped structure, and two ends of the T-shaped structure are rotatably inserted into the two omega-shaped clips 34.
And 7, marking, cutting and chamfering the pipeline joint, wherein the step 7 comprises the following steps of: marking the widest part and the narrowest part of the to-be-cut bevel on the pipeline according to the bevel cutting size which is calculated and determined in advance, installing a scribing tool at the widest part of the to-be-cut bevel after the pipeline is lifted to a specified height, adjusting the position of the scribing tool to enable the axis of the pipeline to be vertical to the fixed plate, enabling the upper edge of the tool to be horizontal, fixing the fixed plate firmly, and enabling the movable plate to perform circular motion around the hinge by pulling the pull rod. The movable plate is opposite to the narrowest part of the to-be-cut bevel opening, and the two limit nuts on the pull rod are screwed to clamp the movable plate, so that a fixed angle between the movable plate and the fixed plate can be kept, and a circle of elliptic lines can be drawn on the outer surface of the pipeline along the side surface of the movable plate by using a pen. Because the pipeline butt joint comprises two pipelines, two different scribing tools are needed to be matched for use, and the two pipelines are simultaneously scribed by one scribing tool, and the two scribing tools are in mirror image relationship, as shown in fig. 16 and 20. After the scribing is completed, cutting the pipeline along the scribing by using a cutting air gun; after cutting, beveling the pipe orifices of the two pipes, and forming a pipe joint with an axis deflected by the two opposite bevel ports.
The fixing plate of the scribing tool is square, the upper edges of the two fixing plates can be used as measuring surfaces of a level meter before scribing, and after the upper edges are adjusted to the horizontal position by means of the level meter, four tightening bolts are finally screwed, so that the long axis of an elliptical bevel opening can be ensured to be positioned at the horizontal position.
Step 8, hanging rod, cross arm, pipe clamp installation, pipeline butt joint and welding include:
after the groove is cut, the screws on the two sides of the pipeline and the cross arm below the pipeline are installed, the upper parts of the screws are inserted into the gaps of the main beam and the screw installation holes of the main cross arm on the two sides of the first-stage pipeline, the screws are locked by nuts, the lower parts of the screws are inserted into the gaps of the first-stage cross arm and are locked by the nuts, the nuts are provided with washers, the upper parts of the screws are inserted into the gaps of the upper-stage cross arm on the two sides of the secondary pipeline and are locked by the nuts, and the lower parts of the screws are inserted into the gaps of the first-stage cross arm and are locked by the nuts; the nut is provided with a washer below, in order to ensure that the screw rod cannot slip after being installed, a steel backing plate with a hole and a thickness of 20mm is arranged below the washer, the size of the steel backing plate is enough to cover a gap between two channel steel of the cross arm, the screw rod is inserted into the washer and the steel backing plate, and the steel backing plate is in direct contact with the channel steel. The pipeline on the cross arm is clamped and fixed by a pipe clamp, a heat insulation cushion block is arranged between the pipe clamp and the pipeline, the pipe clamp is clamped and sleeved on the heat insulation cushion block, and two ends of the pipe clamp are inserted into a gap of the cross arm and are locked by nuts. After the position and elevation of the pipeline are adjusted, the inclined openings of the two pipelines are opposite to each other, the gaps are uniform, then the pipeline interfaces are fixed by spot welding, and the base plate and the cross arm are welded. And a circle of welding is performed along the opposite openings of the pipelines, the two pipelines are welded and connected, and the welding seam has no leakage point.
According to the invention, a plurality of pipelines are connected in series up and down to form a whole through the multi-layer interpenetration of the cross arms and the screw rods, and then the weight is transferred to the spring vibration isolator at the top of the hanging bracket through the main cross arms, so that the load is converted from bottom to top, and the use requirement that the spring vibration isolator can only be pressed vertically is met. Meanwhile, the number of the spring vibration isolators is reduced, the space is saved, and the cost is reduced. Because the pipeline adopts the hanging installation mode of the hanging rod, the pipeline can transversely move in the annular pipe gallery when in thermal deformation, and the deformation requirement of the system in formal operation is met. The stress component is arranged at the top of the pipeline, and the ground is provided with no upright post and anchor plate, so that the horizontal transportation of the pipeline is facilitated. The pipelines are sequentially installed from top to bottom, and after the upper pipeline is installed, the adverse effect on the installation of the lower pipeline is small.
In the whole hanger system, besides the main beam, the connecting wallboard and the rib plates, the main cross arm, the two-three-layer screw rod and the like are mechanically connected in a prefabricated mode, so that the efficiency of construction and installation is improved. The platform adopted by the invention has the dual functions of a horizontal transportation platform and a lifting platform, and the pipeline does not fall to the ground from transportation to lifting, so that the procedures are coherent, the construction efficiency is high, and the socket upright post comprises multiple lengths and can adapt to various different occasions. And the socket connection is convenient for quick assembly and disassembly. The scribing tool can conveniently carry out oval scribing, and the alignment of two oval pipeline ends can also be assisted by using the scribing tool.

Claims (3)

1. A spring overhead vibration isolation hanging bracket assembly method in an annular pipe gallery is characterized in that:
the spring overhead vibration isolation hanging bracket in the annular pipe gallery comprises a main beam, a main cross arm, a screw rod and a spring damper, wherein the main beam is arranged on the upper part of the annular pipe gallery, and two ends of the main beam are fixed on the inner wall of the annular pipe gallery; at least one main cross arm is arranged at the upper part of the main beam, and the main cross arm is connected with the main beam through a spring damper; a plurality of layers of cross arms are arranged at the lower part of the main beam corresponding to each main cross arm, the first layer of cross arms are hung on the main cross arms through screws, the lower layer of cross arms are hung on the upper layer of cross arms through screws, and pipe clamps are fixed on each layer of cross arms and used for clamping and fixing pipelines;
the method comprises the following steps:
step 1, prefabricating and processing a component;
step 2, paying off by a pipe gallery;
step 3, installing a connecting wallboard;
step 4, installing a main beam;
step 5, installing a main cross arm and a spring damper;
step 6, hoisting and transporting the pipeline;
step 7, scribing and cutting a groove on the pipeline joint;
step 8, mounting a suspender, a cross arm and a pipe clamp, and butt-welding pipelines;
wherein the step 1 component prefabrication processing comprises: (1) Prefabricating a main cross arm, wherein the main cross arm is made of rectangular steel, mounting holes of two screws are processed at two ends of the rectangular steel, and mounting holes of two spring dampers are processed in the middle of the two screw mounting holes; (2) Prefabricating a main beam, namely welding two channel steels back to back by using a steel plate to form a whole main beam, and reserving a gap in the middle; (3) Each layer of cross arm is prefabricated, two channel steel are welded back to back by steel plates to form a whole, and each layer of cross arm for supporting the pipeline is formed.
2. The method of assembly of claim 1, wherein step 2 piping lane pay-off comprises: the elevation line 1m away from the ground finishing surface is firstly discharged on the side wall of the pipe gallery, and then the central line of the bracket connecting wall plate is discharged on the side wall of the pipe gallery according to the position of the pipeline bracket in the drawing.
3. The method of assembly of claim 1, wherein step 2 piping lane pay-off comprises: and lifting the prefabricated girder to a preset height, leveling and aligning by using an instrument, spot-welding and fixing the prefabricated girder with the connecting wallboard, spot-welding and fixing the upper and lower rib plates with the connecting wallboard and the girder, and finally welding the upper and lower rib plates into a whole.
CN202111190996.3A 2021-10-13 2021-10-13 Method for assembling overhead vibration isolation hanging bracket of spring in annular pipe gallery Active CN113932068B (en)

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