CN105179814A - High-temperature high-pressure large-diameter pipeline fixed support and fixing method thereof - Google Patents
High-temperature high-pressure large-diameter pipeline fixed support and fixing method thereof Download PDFInfo
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- CN105179814A CN105179814A CN201510576355.XA CN201510576355A CN105179814A CN 105179814 A CN105179814 A CN 105179814A CN 201510576355 A CN201510576355 A CN 201510576355A CN 105179814 A CN105179814 A CN 105179814A
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- power transmission
- pipeline
- spacing
- ring beam
- support
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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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
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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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/24—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with a special member for attachment to profiled girders
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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
- F16L51/00—Expansion-compensation arrangements for pipe-lines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention provides a high-temperature high-pressure large-diameter pipeline fixed support. The high-temperature high-pressure large-diameter pipeline fixed support comprises a support frame, a force transferring spacing ring beam, force transferring brackets and two circles of longitudinal force transferring spacing stiffening plates, wherein supporting legs are arranged at the bottom of the support frame, and spacing holes are formed in the frame; the force transferring spacing ring beam is arranged on the pipe wall between the support frame and a pipeline in a sleeved manner, and concave angular surfaces which are used for being in contact with the longitudinal force transferring spacing stiffening plates are formed on the two end surfaces of the force transferring spacing ring beam; the two circles of longitudinal force transferring spacing stiffening plates are arranged at front and back and are welded on the outer wall surface of the pipeline of the front and back sides of the force transferring spacing ring beam, one sides of the two circles of longitudinal force transferring spacing stiffening plates, which are close to each other and are in contact with the force transferring spacing ring beam, are wedge-shaped and are matched with the concave angular surfaces of the force transferring spacing ring beam to form friction surfaces which are relatively displaced from top to bottom; and the friction surfaces are located on expansion friction contact surfaces determined according to rays in the expansion direction of the center of the pipeline. The high-temperature high-pressure large-diameter pipeline fixed support has the beneficial effects that as the frame is used for transferring force, the pipeline fixed support is stable and reliable and has reliable work safety allowance; and as the comprehensive rigidity and comprehensive strength of the frame are relatively high, the frame can be used on the high-temperature high-pressure large-diameter pipeline fixed support so as to bear very great thrust of a pipeline blind end and can also be used on a pipeline middle part secondary fixed support.
Description
Technical field
The present invention relates to a kind of pipeline fixing bracket, particularly a kind of High Temperature High Pressure large-diameter pipeline fixing rack structure.
Background technique
High-temperature pipe is widely used in various industrial production and civil engineering, particularly section of tubing not only fluids within pipes High Temperature High Pressure, and diameter super large.This type of pipeline fixing bracket needs and pipeline foundation compact siro spinning technology, and pipeline foundation is generally in normal temperature state, therefore the temperature of pipeline fixing bracket node is reduced to rapidly the normal temperature state of frame bottom and basic connection part by the condition of high temperature of pipeline location, and temperature gradient is very big.Internal pipeline is under High Temperature High Pressure effect, the outside dilatancy of pipeline, and outside support temperature is lower, the swell increment along pipe diameter direction is very little, strong deformation constrain is formed to inner high-temperature pipe, makes node internal pipeline and the many part materials of outside support enter yielding stage.
When this type of support node is as when bearing the fixed support of pipeline cecum power, the position that pipeline cecum power forces pipeline to enter yielding stage under temperature stress effect produces huge plastic strain, and node entirety irreversible large deformation occurs and lost efficacy.
Summary of the invention
The object of the invention is to design a kind of pipeline fixing bracket and the fixation method thereof with special tectonic, the subject matter solved is: high-temperature pipe and its fixed support are all directly welded to connect as a whole by the structure way of conventional pipelines fixed support node, to reach the object transmitting high-temperature pipe exterior mechanical load, but cause the heat of high-temperature pipe to be also delivered on piping fixed support thus, fixed support and high-temperature pipe attachment portion is caused to be in the hot operation state consistent with pipeline, the position that fixed support connects with basis is then in the normal temperature working state consistent with basis.Under working state so, fixed support internal pipeline and external structure temperature deformation inconsistent and constrained each other, cause the temperature stress of the fixed support of high-temperature pipe under work operating mode very high, substantially reach and even locally exceed material yield point at the working temperature, cause support node under the acting in conjunction of outside mechanical load and operating temperature field, occurrence of large-area plastic deformation, there is irreversible METHOD FOR LARGE DEFORMATION ELASTOPLASTIC, until whole column joints deformation exceedes safety standard and deactivates in support entirety; In addition, between prior art interior joint internal pipeline and node external structure, generally heat radiating construction is set, its complex structure and reliability is not high, has a strong impact on pipeline fixed mass.
For realizing above-mentioned technical purpose, the technological method that the present invention takes is as follows:
A kind of High Temperature High Pressure large-diameter pipeline fixed support, prop up and be located on pipeline, it is characterized in that, fixed support comprises with lower part:
Support frame, described Support frame is rectangle frame, and pipeline is from passing in the middle of it, and the bottom of Support frame has supporting leg to prop up to be located on basis; The frame of Support frame has the spacing hole for fixing force transfer bracket;
The spacing ring beam of power transmission, on the pipeline outer wall face of described power transmission limited ring beam casing between Support frame and pipeline, its internal diameter is greater than the external diameter of pipeline, and the gap between pipeline outer wall face is not less than the radial temperature expansion distance of pipeline; The both ends of the surface of the spacing ring beam of described power transmission all there is the indent inclined-plane for contacting with the spacing stiffened plate of longitudinal power transmission;
Power transmission bracket, described power transmission bracket is vertically welded on the outer surface of the spacing ring beam of power transmission, and is uniformly distributed around power transmission spacing ring beam one circle, and the spacing hole one_to_one corresponding of itself and Support frame also stretches out from hole;
The spacing stiffened plate of longitudinal power transmission, the spacing stiffened plate of described longitudinal power transmission comprises front and back two circle, be welded on the pipeline outer wall face of both sides before and after the spacing ring beam of power transmission respectively, be uniformly distributed along pipe circumference, the spacing stiffened plate of described longitudinal power transmission is wedge shape near the side of the spacing ring beam contact of power transmission, coordinates with the indent inclined-plane of the spacing ring beam of power transmission the rubbing surface being formed and relative displacement can occur up and down; Described rubbing surface is positioned on the expandable frictional surface of contact determined according to pipeline center expansion direction ray.
Wherein, described expandable frictional surface of contact is aggregation pipe center swell oriented radial one of being formed with Expansion Center point be summit conical surface or pyramidal surface, the i.e. side view of circular cone or the side view of pyramid, described pipeline center expansion direction ray for initial point, encloses the down contour point of the spacing stiffened plate of power transmission inner side wedge shape close to each other with Expansion Center point through two; Described Expansion Center point can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support.Its defining method is as follows:
Step 1, in support selected Expansion Center point: this Expansion Center point can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support;
Step 2, make pipeline center's expansion direction ray: at Expansion Center point place, support width as required makes pipeline center's expansion direction ray; Pipeline center's expansion direction ray for initial point, encloses the down contour point O of the spacing stiffened plate of power transmission inner side wedge shape close to each other with Expansion Center point through two;
Step 3, determine expandable frictional surface of contact: united by all pipeline center expansion direction ray, make each self-forming of pipeline center's expansion direction ray one of pipe ends with Expansion Center point be summit conical surface or pyramidal surface, i.e. conical side surface shape or pyramid side view is expandable frictional surface of contact.
When described expandable frictional surface of contact is conical surface, the every bit on the conical surface is all positioned on pipeline center's expansion direction ray, and accordingly, the cross section of the spacing ring beam of described power transmission is circular, and its rubbing surface contacted with the spacing stiffened plate of longitudinal power transmission is also conical surface.
When described expandable frictional surface of contact is orthopyramid face, the cross section of the spacing ring beam of corresponding described power transmission is regular polygon, and the rubbing surface that itself and the spacing stiffened plate of longitudinal power transmission contact also is orthopyramid face.
Preferably, the spacing ring beam of described power transmission is a ring beam or two ring beams side by side, if two ring beams side by side, then it is rigidly connected as a whole, and described power transmission bracket is located on the connecting rod in the middle of two ring beams.
Preferably, the cross section of described power transmission bracket is circular, square or polygonal.
The present invention also provides the above-mentioned support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline, it is characterized in that, comprises the steps:
Step one, determine support installing position: to require according to process conditions and site condition selectes supporting position;
Step 2, determine the sectional dimension of support: the external load size needing support to bear according to pipeline under work operating mode, determine the bracket cross section stress needed, in conjunction with the material property of Support frame, this stress can be born for going out the sectional dimension of required support according to inverse with material;
Step 3, in support selected Expansion Center point: this Expansion Center point can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support;
Step 4, the spacing stiffened plate of the longitudinal power transmission of two circles is set: enclose the spacing stiffened plate of longitudinal power transmission in pipeline arranged outside two, it is welded on pipeline outer wall, along pipe circumference and is uniformly distributed, two inner sides enclosing the spacing stiffened plate of power transmission close to each other are wedge shape, this sphenoid surface is the power transmission face that pipe section point entirety bears exterior mechanical load, the clear distance of two circle longitudinal power transmission spacing stiffened plates, meets design requirement as condition with the two circle spacing stiffened plates of longitudinal power transmission and the intensity of pipeline body material under node exterior mechanical load action of welding with it and rigidity;
Step 5, make pipeline center's expansion direction ray: at Expansion Center point place, support width as required makes pipeline center's expansion direction ray; Pipeline center's expansion direction ray for initial point, encloses the down contour point of the spacing stiffened plate of power transmission inner side wedge shape close to each other with Expansion Center point through two, the down contour point of described inner side wedge shape can be positioned at any point on the lower edge of inner side wedge shape;
Step 6, determine expandable frictional surface of contact: united by all pipeline center expansion direction ray, then each self-forming of pipeline center's expansion direction ray one of pipe ends is with Expansion Center point be summit conical surface or pyramidal surface, is expandable frictional surface of contact;
Step 7, the spacing ring beam of power transmission is set between the inner side wedge shape of two circle longitudinal power transmission spacing stiffened plates, longitudinal spacing stiffened plate of power transmission and the spacing ring beam of power transmission rubbing contact on expandable frictional surface of contact, surface of contact is the rubbing surface that relative displacement can occur up and down, leave gap between the inner ring surface of the spacing ring beam of power transmission and pipeline outer wall face, this gap is not less than pipeline external surface radial temperature expansion distance;
Step 8, minimum outside the spacing ring beam of power transmission two power transmission brackets are set, be uniformly distributed around the spacing ring beam of power transmission, the material property that the size of power transmission bracket and quantity meet power transmission bracket according to the working stress that power transmission bracket needs under work operating mode is according to determining;
Step 9, mounting bracket framework: Support frame plane orthogonal is in pipeline medial axis, and its central point is positioned on pipeline medial axis, pipeline medial axis; Described Support frame has and power transmission bracket spacing hole one to one, power transmission bracket stretches out spacing hole;
Step 10: overall quality inspection, so far, the installment work of pipeline fixing bracket completes, and repeats step one to step 9, needing other position mounting brackets of mounting and fixing bracket, until pipeline fixedly completes.
If described expandable frictional surface of contact is conical surface, on the conical surface, every bit is all positioned on pipeline center's expansion direction ray, and the cross section of the spacing ring beam of corresponding described power transmission is circular, and its rubbing surface contacted with the spacing stiffened plate of longitudinal power transmission is also conical surface.
If described expandable frictional surface of contact is orthopyramid face, the cross section of the spacing ring beam of corresponding described power transmission is regular polygon, and the rubbing surface that itself and the spacing stiffened plate of longitudinal power transmission contact also is orthopyramid face.
Preferably, the spacing ring beam of described power transmission can be a ring beam or two ring beams side by side, if two ring beams side by side, then it is rigidly connected as a whole, and described power transmission bracket is located on the connecting rod in the middle of two ring beams.
Compared with prior art, technical advantage of the present invention is:
1, apply High Temperature High Pressure large-diameter pipeline fixed support of the present invention, the external structure of high-temperature pipe fixed support node and internal high temperature pipe-line system can be made to belong to Weak link, outside heat is delivered to very limited by internal pipeline, and the dilatancy of internal pipeline is separated with external structure, node external structure is only for bearing the exterior mechanical load of pipeline node location, the pipeline of internal high temperature high pressure can freely outwards expand under temperature action, position of joints internal high temperature temperature expansion of pipes distortion can be discharged completely, thus avoid node when internal and external temperature is inconsistent, there is the destruction of a node caused by temperature expansion deformation, there is not space displacement in supporting position pipeline simultaneously, forms fixed support, can bear exterior mechanical load while release temperature distortion,
2, the deformation structure be separated is adopted, the distortion of node internal and external temperature does not influence each other, therefore do not need to arrange the passage that special heat radiating construction is externally transmitted by Weak link to cut off intra-node heat, greatly reduce the complexity of joint structure, improve the reliability of node simultaneously.
Way of the present invention uses framework power transmission, reliable and stable, has reliably operational security margins.And the integral stiffness of framework and comprehensive strength are comparatively large, can be used on the large diameter pipeline fixing bracket of High Temperature High Pressure, for bearing very large pipeline cecum thrust, also can be used for time fixed support in the middle part of pipeline.
Accompanying drawing explanation
Fig. 1 is the support bracket fastened integral installation view of High Temperature High Pressure large-diameter pipeline that the embodiment of the present invention relates to;
Fig. 2 is the support bracket fastened installation relation schematic diagram being arranged on the spacing ring beam of power transmission 5 on pipeline 8, the spacing stiffened plate 3 of longitudinal power transmission and power transmission bracket of High Temperature High Pressure large-diameter pipeline that the embodiment of the present invention relates to;
Fig. 3 is the cross-sectional view of the A-A section of Fig. 2;
Fig. 4 is the structural representation of Support frame 7.
Reference character: the spacing stiffened plate of the longitudinal power transmission of 1-Expansion Center point, 2-pipeline center expansion direction ray, 3-, 4-rubbing surface, the spacing ring beam of 5-power transmission, 6-power transmission bracket, 7-Support frame, 8-pipeline, 9-pipeline medial axis, 10-spacing hole.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As Fig. 1, a kind of High Temperature High Pressure large-diameter pipeline fixed support, comprise the Support frame 7 of bottom belt supporting leg, Support frame 7 on the ground, pipeline 8 passes in the middle of Support frame 7, it is characterized in that: the pipeline between Support frame 7 and pipeline 8 overlaps and has a spacing ring beam 5 of power transmission, as Fig. 2 and Fig. 3, the annular diameters of the spacing ring beam 5 of power transmission is greater than the external diameter of pipeline 8, and the gap between itself and pipeline outer wall face is not less than pipeline external thermal insulation radial temperature expansion distance; The power transmission bracket 6 of two its outer wall vertical is at least established in the outside of the spacing ring beam 5 of power transmission, and the cross section of power transmission bracket 6 is circular, square or polygonal.Power transmission bracket 6 is uniformly distributed around spacing ring beam 5 one circle of power transmission; As Fig. 4, Support frame 7 has and power transmission bracket 6 spacing hole 10 one to one, power transmission bracket 6 stretches out Support frame 7 from spacing hole 10; The spacing ring beam 5 of power transmission is a ring beam or two ring beams side by side, and the present embodiment adopts two ring beams side by side, and it is rigidly connected as a whole, and four rectangle power transmission brackets 6 are evenly located on the connecting rod in the middle of two ring beams.As Fig. 2 and Fig. 3, the pipeline outer wall face of power transmission spacing ring beam 5 both sides is welded respectively a circle along the spacing stiffened plate 3 of the equally distributed longitudinal power transmission of pipe circumference, the spacing stiffened plate of all power transmissions 3 is wedge shape near the side of the spacing ring beam 5 of power transmission, the surface of contact of the spacing ring beam 5 of power transmission of itself and inner side is the rubbing surface 4 that relative displacement can occur up and down, and rubbing surface 4 is positioned on the expandable frictional surface of contact determined according to pipeline center's expansion direction ray.As Fig. 1 to 3, the expandable frictional surface of contact that the present embodiment adopts is conical surface, on the conical surface, every bit is all positioned on pipeline center's expansion direction ray, and the cross section of the spacing ring beam 5 of corresponding power transmission is circular, and its rubbing surface 4 contacted with the spacing stiffened plate 3 of longitudinal power transmission is also conical surface.Expandable frictional surface of contact also can be orthopyramid face, and the cross section of the spacing ring beam 5 of corresponding power transmission is regular polygon, and the rubbing surface 4 that itself and the spacing stiffened plate 3 of longitudinal power transmission contact also is orthopyramid face.
Wherein, described expandable frictional surface of contact is aggregation pipe center swell oriented radial 2 one of being formed with Expansion Center point (1) be summit conical surface or pyramidal surface, described pipeline center expansion direction ray 2 for initial point, encloses the down contour point 11 of the spacing stiffened plate of power transmission 3 inner side wedge shape close to each other with Expansion Center point 1 through two; Described Expansion Center point 1 can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support.Its defining method is as follows:
Step 1, in support selected Expansion Center point 1: this Expansion Center point can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support;
Step 2, make pipeline center's expansion direction ray 2: at Expansion Center point 1 place, support width as required makes pipeline center's expansion direction ray 2; Pipeline center's expansion direction ray 2 for initial point, encloses the down contour point 11 of the spacing stiffened plate of power transmission 3 inner side wedge shape close to each other with Expansion Center point 1 through two, the down contour point 11 of described inner side wedge shape can be positioned at any point on the lower edge of inner side wedge shape;
Step 3, determine expandable frictional surface of contact: united by all pipeline center expansion direction ray 2, make each self-forming of pipeline center's expansion direction ray 2 one of pipe ends with Expansion Center point 1 be summit conical surface or pyramidal surface, be expandable frictional surface of contact.
When applying High Temperature High Pressure large-diameter pipeline fixed support of the present invention and carrying out the regulation construction of pipeline, specific operation are as follows:
1) support installing position is determined: select supporting position according to process conditions requirement and site condition;
2) according to pipeline 8 in working order lower support frame need the external load size of bearing, drawing bracket cross section stress by FEM (finite element) calculation or theoretical analysis and calculation, meeting the material requirements of framework with this stress for going out required support width and bracket cross section according to inverse.
3) selected in pipeline 8 supporting position Expansion Center point 1 place, support width as required makes pipeline 8 center swell oriented radial 2.This Expansion Center point 1 can be arranged on pipeline 8 axis of pipeline 8 carriage center position as required; Also can eccentric setting on pipeline 8 axis in pipeline 8 supporting position.
4) determine expandable frictional surface of contact according to pipeline 8 center swell oriented radial 2, expandable frictional surface of contact can be conical surface also can be orthopyramid face.On the conical surface, every bit is all positioned on pipeline 8 center swell oriented radial 2.
5) be connected on pipeline 8 outer wall in pipeline 8 arranged outside two lap welding, along the spacing stiffened plate 3 of longitudinal power transmission of pipeline 8 even circumferential distribution, wedge shape inside the spacing stiffened plate 3 of longitudinal power transmission overlaps with pipeline 8 center swell oriented radial 2, and the wedge shape making the spacing stiffened plate 3 of all longitudinal power transmissions be positioned at pipeline 8 center swell oriented radial 2 side is positioned on expandable frictional surface of contact.Often enclose stiffened plate 3 quantity of the spacing stiffened plate 3 of longitudinal power transmission, thickness is determined according to pipeline 8 diameter and pipeline 8 support force situation, the principle determined is the material requirements that longitudinal power transmission spacing stiffened plate 3 working stress drawn according to FEM (finite element) calculation or theoretical analysis and calculation meets the spacing stiffened plate 3 of longitudinal power transmission, and the spacing of the spacing stiffened plate 33 of longitudinal power transmission is generally 200 ~ 250mm.
6) between the expandable frictional surface of contact of the spacing stiffened plate of the two longitudinal power transmissions of circle 3, arrange the spacing ring beam 5 of power transmission, the spacing stiffened plate of longitudinal power transmission 3 becomes rubbing surface 4 with the spacing ring beam 5 of power transmission rubbing contact on expandable frictional surface of contact.If the expandable frictional surface of contact determined above is conical surface, then ring beam 5 should be circular mutually and contacts side with the spacing stiffened plate 3 of longitudinal power transmission and is similarly the conical surface overlapped with expandable frictional surface of contact.If the expandable frictional surface of contact determined above is orthopyramid face, then ring beam 5 should be regular polygon and the orthopyramid face of the rubbing surface 4 contacted with the spacing stiffened plate 3 of longitudinal power transmission too for overlapping with expandable frictional surface of contact mutually.The present embodiment power transmission spacing ring beam 5 inner diameter 100mm larger than pipeline 8 external diameter.The spacing ring beam 5 of power transmission can entirety be a ring beam 5, also can arrange along centrosymmetric two ring beams 5 of supporting position pipeline 8 in longitudinal power transmission spacing stiffened plate 3 position of both sides, then be rigidly connected as a whole by two ring beams 5.Stay certain interval between power transmission spacing ring beam 5 inner ring surface and pipeline 8 outer surface, this gap need be more than or equal to pipeline 8 Surgery therapy thickness and pipeline 8 outer surface radial temperature swell value sum.The sectional dimension of spacing ring beam 5 is determined in the material requirements that spacing ring beam 5 working stress drawn by FEM (finite element) calculation or theoretical analysis and calculation under work operating mode according to spacing ring beam 5 need meet spacing ring beam 5.
7) or polygonal power transmission bracket 6 circular or square in power transmission spacing ring beam 5 arranged outside, power transmission bracket 6 is minimum arranges two, distributes along power transmission spacing ring beam 5 even circumferential.The material requirements that power transmission bracket 6 size and quantity meet power transmission bracket 6 according to power transmission bracket 6 working stress that power transmission bracket 6 is drawn by FEM (finite element) calculation or theoretical analysis and calculation under work operating mode is determined.
8) Support frame 7 is set at supporting position, Support frame 7 is along the plane symmetry perpendicular to pipeline 8 medial axis of supporting position pipeline 8 center, Support frame 7 is arranged and power transmission bracket 6 spacing hole 10 one to one, spacing hole 10 needs to discharge the displacement of power transmission bracket 6 along direction, power transmission bracket 6 medial axis, and retrains power transmission bracket 6 perpendicular to the displacement in the plane of power transmission bracket 6 medial axis.
9) overall quality inspection, so far, the installment work of pipeline fixing bracket completes, and repeats above-mentioned steps, is needing other position mounting brackets of mounting and fixing bracket, until pipeline 8 entirety fixedly completes.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a High Temperature High Pressure large-diameter pipeline fixed support, prop up and be located on pipeline (8), it is characterized in that, fixed support comprises with lower part:
Support frame (7), described Support frame (7) is rectangle frame, and pipeline (1) is from passing in the middle of it, and the bottom of Support frame (7) has supporting leg to prop up to be located on basis; The frame of Support frame (7) has the spacing hole (10) for fixing force transfer bracket (6);
The spacing ring beam of power transmission (5), the spacing ring beam of described power transmission (5) is enclosed within the pipeline outer wall face between Support frame (7) and pipeline (8), its internal diameter is greater than the external diameter of pipeline (8), and the gap between pipeline outer wall face is not less than the radial temperature expansion distance of pipeline; The both ends of the surface of the spacing ring beam of described power transmission (5) all there is the indent inclined-plane for contacting with the spacing stiffened plate of longitudinal power transmission (3);
Power transmission bracket (6), described power transmission bracket (5) is vertically welded on the outer surface of the spacing ring beam of power transmission (5), and is uniformly distributed around power transmission spacing ring beam (5) circle, and spacing hole (10) one_to_one corresponding of itself and Support frame (7) also stretches out from hole;
The longitudinal spacing stiffened plate of power transmission (3), the spacing stiffened plate of described longitudinal power transmission (3) comprises front and back two circle, be welded on the pipeline outer wall face of both sides before and after the spacing ring beam of power transmission (5) respectively, be uniformly distributed along pipe circumference, the side that the spacing stiffened plate of described longitudinal power transmission (3) contacts near the spacing ring beam of power transmission (5) is wedge shape, coordinates the rubbing surface (4) being formed and relative displacement can occur up and down with the indent inclined-plane of the spacing ring beam of power transmission (5); Described rubbing surface (4) is positioned at according on pipeline center's expansion direction ray (2) the expandable frictional surface of contact determined.
2. High Temperature High Pressure large-diameter pipeline fixed support according to claim 1, it is characterized in that: described expandable frictional surface of contact is aggregation pipe center swell oriented radial (2) of being formed with Expansion Center point (1) be summit conical surface or pyramidal surface, described pipeline center's expansion direction ray (2) with Expansion Center point (1) for initial point, enclose the down contour point (11) of the spacing stiffened plate of power transmission (3) inner side wedge shape close to each other through two, the down contour point (11) of described inner side wedge shape is positioned at any point on the lower edge of inner side wedge shape; Described Expansion Center point (1) can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support.
3. High Temperature High Pressure large-diameter pipeline fixed support according to claim 2, it is characterized in that: described expandable frictional surface of contact is conical surface, every bit on the conical surface is all positioned on pipeline center's expansion direction ray, accordingly, the cross section of the spacing ring beam of described power transmission (5) is circular, and its rubbing surface (4) contacted with the spacing stiffened plate of longitudinal power transmission (3) is also conical surface.
4. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 2, it is characterized in that: described expandable frictional surface of contact is orthopyramid face, the cross section of the spacing ring beam of corresponding described power transmission (5) is regular polygon, and the rubbing surface (4) that itself and the spacing stiffened plate of longitudinal power transmission (3) contact also is orthopyramid face.
5. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 1, it is characterized in that: the spacing ring beam of described power transmission (5) is a ring beam or two ring beams side by side, if two ring beams side by side, then it is rigidly connected as a whole, and described power transmission bracket (6) is located on the connecting rod in the middle of two ring beams.
6. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 1, is characterized in that: the cross section of described power transmission bracket (6) is circular, square or polygonal.
7. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 1 ~ 6 any one, is characterized in that, comprise the steps:
Step one, determine support installing position: to require according to process conditions and site condition selectes supporting position;
Step 2, determine the sectional dimension of support: the external load size needing support to bear according to pipeline (8) under work operating mode, determine the bracket cross section stress needed, in conjunction with the material property of Support frame (7), this stress can be born for going out the sectional dimension of required support according to inverse with material;
Step 3, in support selected Expansion Center point (1): this Expansion Center point can be arranged on the conduit axis of carriage center position as required; Also can eccentric setting on the conduit axis in support;
Step 4, the longitudinal spacing stiffened plate of the power transmission (3) of two circles is set: enclose the spacing stiffened plate of longitudinal power transmission (3) in pipeline arranged outside two, it is welded on pipeline outer wall, be uniformly distributed along pipe circumference, two inner sides enclosing the spacing stiffened plate of power transmission (3) close to each other are wedge shape, this sphenoid surface is the power transmission face that pipe section point entirety bears exterior mechanical load, the clear distance of the two circles spacing stiffened plate of longitudinal power transmission (3), meet design requirement as condition with the two circles spacing stiffened plate of longitudinal power transmission (3) and the intensity of pipeline body material under node exterior mechanical load action of welding with it and rigidity,
Step 5, do pipeline center's expansion direction ray (2): at Expansion Center point (1) place, support width as required does pipeline center's expansion direction ray (2); Pipeline center's expansion direction ray (2) with Expansion Center point (1) for initial point, enclose the down contour point (11) of the spacing stiffened plate of power transmission (3) inner side wedge shape close to each other through two, the down contour point (11) of described inner side wedge shape is positioned at any point on the lower edge of inner side wedge shape;
Step 6, determine expandable frictional surface of contact: all pipeline center's expansion direction ray (2) united, then each self-forming of pipeline center's expansion direction ray (2) of pipe ends is with Expansion Center point (1) be summit conical surface or pyramidal surface, is expandable frictional surface of contact;
Step 7, two circle the spacing stiffened plate of longitudinal power transmission (3) inner side wedge shape between the spacing ring beam of power transmission (5) is set, the longitudinal spacing stiffened plate of power transmission (3) and the spacing ring beam of power transmission (5) rubbing contact on expandable frictional surface of contact, surface of contact is the rubbing surface (4) that relative displacement can occur up and down, leave gap between the inner ring surface of the spacing ring beam of power transmission (5) and pipeline outer wall face, this gap is not less than pipeline external surface radial temperature expansion distance;
Step 8, in the spacing ring beam of power transmission (5) outside minimum two power transmission brackets (6) are set, be uniformly distributed around the spacing ring beam of power transmission (5), the material property that the size of power transmission bracket and quantity meet power transmission bracket according to the working stress that power transmission bracket needs under work operating mode is according to determining;
Step 9, mounting bracket framework (7): Support frame (7) plane orthogonal is in pipeline medial axis (9), and its central point is positioned on pipeline medial axis, pipeline medial axis (9); Described Support frame (7) has and power transmission bracket (6) spacing hole (10) one to one, power transmission bracket (6) stretches out spacing hole;
Step 10: overall quality inspection, so far, the installment work of pipeline fixing bracket completes, and repeats step one to step 9, needing other position mounting brackets of mounting and fixing bracket, until pipeline fixedly completes.
8. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 7, it is characterized in that: described expandable frictional surface of contact is conical surface, on the conical surface, every bit is all positioned on pipeline center's expansion direction ray, the cross section of the spacing ring beam of corresponding described power transmission (5) is circular, and its rubbing surface (4) contacted with the spacing stiffened plate of longitudinal power transmission (3) is also conical surface.
9. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 7, it is characterized in that: described expandable frictional surface of contact is orthopyramid face, the cross section of the spacing ring beam of corresponding described power transmission (5) is regular polygon, and the rubbing surface (4) that itself and the spacing stiffened plate of longitudinal power transmission (3) contact also is orthopyramid face.
10. the support bracket fastened fixation method of High Temperature High Pressure large-diameter pipeline according to claim 8 or claim 9, it is characterized in that: the spacing ring beam of described power transmission (5) is a ring beam or two ring beams side by side, if two ring beams side by side, then it is rigidly connected as a whole, and described power transmission bracket (6) is located on the connecting rod in the middle of two ring beams.
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| CN201510576355.XA CN105179814B (en) | 2015-09-11 | 2015-09-11 | High-temperature high-pressure large-diameter pipeline fixed support and fixing method thereof |
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| CN107606314A (en) * | 2017-09-08 | 2018-01-19 | 天津龙驰机械制造股份有限公司 | Pipe installing component |
| CN107747651A (en) * | 2017-10-25 | 2018-03-02 | 中航工程集成设备有限公司 | A kind of support frame of large-diameter pipeline |
| CN108533841A (en) * | 2018-04-18 | 2018-09-14 | 中国天辰工程有限公司 | A kind of attached tower tube wire spring sectional shelf-unit of major diameter |
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|---|---|
| CN105179814B (en) | 2017-04-12 |
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