CN207034393U - A kind of device for being used to reduce slewing ozzle load - Google Patents

Abstract

The utility model discloses a kind of device for being used to reduce slewing ozzle load, for slewing inlet and outlet pipeline provide radially it is spacing, and adjusted by bolt each to the distance between spacing and pipeline, solves the problems, such as frictional force caused by the axial displacement of the inlet and outlet pipeline of slewing by friction pair with extremely low coefficient of friction, significantly reduce the stress that bears of slewing ozzle and respectively to moment of torsion, three dimension stress of pipeline are reduced on influence caused by slewing, ensure that the reliable and stable operation of slewing.

Description

A kind of device for being used to reduce slewing ozzle load

Technical field

The utility model is related to and a kind of be used to reduce the device of slewing ozzle load, it is possible to reduce pipeline due to by Three dimension stress and to load caused by slewing.

Background technology

Pipeline, due to many factors such as the internal pressure of its carrying and external loads and environment temperatures, can draw during operation It is excessive to play the stress of pipeline, causes connected equipment to be deformed because stress is excessive.Therefore in commercial Application, pipeline stress Complexity, it is desirable to which limitation prevents pipe bending caused by each stress effect from reversing except the axle outwards directive displacement of institute.

At present, in pipe design, pipeline has a free degree of X, Y, Z, RX, RY, RZ six direction at branch suspension centre, three Displacement of the lines { u, v, w } and three angular displacements { θ x, θ y, θ z }, corresponding stress boundary condition is line power { Fx, Fy, Fz } and torque { Mx, My, Mz }.Generally according to the needs of pipe design, different suspension and supports is selected to constrain wherein some free degree or a few The individual free degree, come reach pipe safety, economical operation purpose.General limitation axis shift, is prevented with spacing pipe support or support Only piping displacement is excessive, keeps the connected equipment of pipeline concentric；The non-axis shift of limit levels, uses leading truck；Spring branch Frame can be used to increase pipeline flexible, unloads stress, avoids having an impact surrounding conduit and equipment.

Turbo-expander is a kind of rotation blade machinery, is used for producing cold in cryogenic air separation plant, is one The turbine that kind is used under cryogenic conditions.The inlet and outlet of turbine expansion are connected with fluid line using flange bolt, flange installation Quality directly influences the safe operation of Turbine expansion unit.When import and export fluid line connects with turbo-expander, bend pipe, The weight of the pipelines such as reducing side, pipe must not act on turbine, and the expansion joint on fluid line will must expand with heat and contract with cold generation Active force eliminate, absolutely not allow to act on turbine set.The load of slewing inlet and outlet ozzle is small, i.e. external pipe Small to equipment stress influence, general following several ways improve：1) increase machine wall thickness, strengthen equipment load；2) increase pipe Road is flexible；3) expansion joint etc. is added near ozzle, but each way all respectively there are advantage and disadvantage.Therefore slewing especially needs suitable Support meanss, reduce slewing inlet and outlet ozzle load, avoid import and export pipeline stress excessively act on machine, make Into damage.

U.S. Patent application US3963205A, which is disclosed, a kind of can be used in different loads and the pipeline support of line size System, it is allowed to pipeline axially free movement or based on support pedestal do controlled motion.Chinese patent application CN103047483A provides a kind of cluster spring support for turbine, including two spring supports, standpipe elbow support, Upper rigid body, lower rigid body and standpipe elbow support；Described lower rigid body includes lower shoe and two are vertically set on bottom Lower riser on plate, two spring supports are symmetrically distributed in the both sides of lower rigid body, and spring support is simultaneously arranged on lower shoe, institute The upper rigid body stated includes upper backup pad and is arranged on the upper vertical plate of upper backup pad, and the both ends of upper backup pad are pressed in spring support On loading plate, upper friction pair is provided with the contact surface of loading plate and upper backup pad, upper vertical plate stretches in lower rigid body two Between the gap of lower riser.The vertical thermal walking support of turbine import and export pipeline is met, also with extremely low coefficient of friction solution Determine the Axial Thermal displacement problem of horizontal pipe, greatly reduced the horizontal friction force that turbine set is born, while can also eliminate The vibrations occurred during Trans-critical cycle rotating speed, it ensure that the reliable and stable operation of turbine.Chinese utility model patent application CN106151686A discloses a kind of heat distribution pipeline rotary stopper bearing.It includes pipe clamp, rotary shaft, support system；It is described Support system includes support frame, supporting plate；Support frame as described above includes cross-brace frame, longitudinal bracing frame；The rotary shaft includes Upper rotary shaft and Shaft, the upper rotary shaft lower end are welded in the upper end of pipeline, and the Shaft upper end is welded in pipe The lower end in road；There is rotation axial trough to be located in the support system, the rotary sleeve is in the rotation axial trough.It overcomes existing There is the displacement of the lines that technology can only limit some direction or both direction, it is limited on the premise of position of the fulcrum displacement of the lines is limited The shortcomings that angular displacement；With increasing rotary shaft on pipe clamp, and limited support is designed, pipeline is limited it under heating status Displacement of the lines, allows angular displacement on a certain plane, the advantages of discharging demi-inflation stress.

Utility model content

The utility model provides a kind of device for being used to reduce slewing ozzle load, is the inlet/outlet pipe of slewing Road provides radially spacing, and is adjusted by bolt each to spacing the distance between with pipeline, is rubbed by friction pair with extremely low Wipe coefficient and solve the problems, such as frictional force caused by the axial displacement of the inlet and outlet pipeline of slewing, significantly reduction slewing pipe Stress that mouth is born and respectively to moment of torsion, reduce three dimension stress of pipeline to influence caused by slewing, ensure that rotation The reliable and stable operation of equipment.

The utility model provides following technical schemes：A kind of device for being used to reduce slewing ozzle load, bag Containing four support bars, regulating bolt, adjusting nut, four friction pairs, fixed steel construction, it is characterised in that four supports Bar is divided into two pairs, and one end of each pair support bar is fixed on pipeline outer wall along pipeline radial symmetric, and two pairs of support bars are orthogonal； Four friction pairs form by two components being slidably connected, and one of component is fixed on corresponding support bar away from pipe The other end in road direction, another component connection regulating bolt, and be fixed on by regulating bolt on fixed steel construction, two components Between contact surface be sliding contact surface；By adjusting nut defined position, the slip for adjusting each friction pair connects the regulating bolt Clearance distance between contacting surface.

Preferably, the material of the sliding contact surface of the friction pair is smooth stainless steel plate or carbon steel sheet.

Preferably, flat slide assemblies are provided between the sliding contact surface of the friction pair.

Preferably, the material of the slide assemblies is selected from polytetrafluoroethylene (PTFE) (PTFE) or PTFE-based composites.

Preferably, the slide assemblies can be fixed on the sliding friction surface of any one component of friction pair by sunk screw On.

Preferably, the slide assemblies can inlay the groove being fixed in the sliding friction surface of any one component of friction pair It is interior.

Preferably, slide assemblies are two panels, are separately fixed in the sliding friction surface of two components of friction pair.

Preferably, the inlet/outlet pipe road ozzle sealing surface of slewing and support bar are between the bearing of pipeline outer wall Distance is 500-600mm.

Preferably, support bar can be hollow circular-tube or solid circular pipe.

Preferably, four support bar calibers are identical.

Preferably, the regulating bolt of each friction submember of connection and fixed steel construction can be 2 or 4, and symmetrically Distribution.

The utility model additionally provides a kind of technical scheme：A kind of device for being used to reduce slewing ozzle load, bag Containing two support bars, regulating bolt, adjusting nut, two friction pairs for being connected to support bar, sitting posture spring and suspended spring, Fixed steel construction, it is characterised in that described two support bars, one end of support bar are symmetrically fixed on pipeline in the horizontal direction respectively The both ends of outer wall；Described two friction pairs form by two components being slidably connected, and one of component is fixed on corresponding One section of support bar, another component connection regulating bolt, and is fixed on fixed steel construction by regulating bolt, two components it Between contact surface be sliding contact surface；The regulating bolt adjusts the sliding contact of each friction pair by adjusting nut defined position Clearance distance between face；The sitting posture lower spring end is fixed on the fixation steel construction of surrounding, and upper end is fixed with one and above put down Plate, the upper flat plate are slidably connected to form a friction pair for being connected to spring with being fixed on the lower flat board of duct bottom；It is described Suspended spring upper end is fixed on the fixation steel construction of surrounding, and lower end is connected by a connecting rod with conduit upper.

Preferably, the friction pair for being connected to support bar and be connected to spring friction pair sliding contact surface material For stainless steel plate, carbon steel sheet, polytetrafluoroethylene (PTFE) (PTFE) or PTFE-based composites.

Preferably, flat slide assemblies are provided between the sliding contact surface of the friction pair.

Preferably, the material of slide assemblies is selected from polytetrafluoroethylene (PTFE) (PTFE) or PTFE-based composites.

Preferably, the inlet/outlet pipe road ozzle sealing surface of slewing and support bar are between the bearing of pipeline outer wall Distance is 500-600mm.

Slewing is including but not limited to turbine, steam turbine, turbine, centrifugal compressed in above-mentioned two technical scheme Machine.

The beneficial effects of the utility model are：A kind of device for being used to reduce slewing ozzle load, its structure is novel, Both the vertical displacement support of slewing import and export pipeline had been met, has also solved horizontal pipe with extremely low coefficient of friction Frictional force problem caused by axial displacement, significantly reduce the stress that bears of slewing and respectively to moment of torsion, ensure that slewing Reliable and stable operation.

(1) device provided by the utility model for being used to reduce slewing ozzle load, is contacted by the face of friction pair, Control pipeline displacement radially and the moment of torsion of three dimensions, pipeline only have displacement in the axial direction.

(2) device provided by the utility model for being used to reduce slewing ozzle load, can pass through pipe level direction Two friction pairs between face contact, displacement of the control pipeline along horizontal radial, while by being connected to pipeline vertical direction Two springs, the displacement of control pipeline vertically, while support is provided for pipeline.With reference to vibration absorber and friction pair skill Art, the vertical displacement support of slewing import and export pipeline was both met, should caused by also having unloaded pipeline vertical direction displacement Power, significantly reduce the stress that slewing is born, ensure that the reliable and stable operation of slewing.

(3) in the utility model, friction pair is combined by rigid inner support plate and external support board, in its contact surface Fixed slide assemblies, may be selected from polytetrafluoroethylene (PTFE) (PTFE) or PTFE-based composites, greatly reduce friction pair Coefficient of friction, when horizontal pipe is axially moveable, reduce the stress that slewing is born.

(4) in the utility model, regulating bolt can adjust between each internally external support board by adjusting nut defined position Gap, ensure that the sliding contact surface of friction pair is close to, further reduce influence of the stress to pipeline.

(5) in the utility model, the caliber of the support bar is identical, but length can differ, according to pipe to be supported Existing fixed steel construction effectively utilizes existing equipments resources and consolidated come the length for designing and adjusting support bar around road It is fixed.

Brief description of the drawings

Fig. 1 is the inlet and outlet piping schematic of turbo-expander.

Fig. 2 is the cross-sectional view of the utility model one embodiment.

Fig. 3 is the cross-sectional view of another embodiment of the utility model.

Fig. 4 (a) is the cross-sectional view of the slide assemblies of embedded fixation.

Fig. 4 (b) is the cross-sectional view for the slide assemblies that sunk screw is fixed.

1- fixes steel construction；2- friction submembers；3- friction submembers；4- support bars；5- regulating bolts；6- adjusts spiral shell It is female；7- pipelines；8- suspended springs；9- sitting posture springs；10- upper flat plates；Flat board under 11-；12- connecting rods；13- slide assemblies； 14- sunk screws；15- sleeves；Fixed connecting base under 16-；20- is connected to the friction pair of support bar；21- is connected to support bar Friction pair；22- is connected to the friction pair of spring；30- inlet pipelines；31- outlet conduits；32- suction flanges；33- outlet(discharge) flanges； 34- turbo-expanders；35- reduces the device of slewing ozzle load.

Embodiment

A turbo-expander as shown in Figure 1, is the slewing commonly used in a kind of air-separating plant, its inlet tube Road 30 connects turbo-expander 34, the connection outlet pipeline 31 of outlet(discharge) flange 33 and turbo-expander 34 by suction flange 32.Enter, Outlet conduit is horizontal to be set in ground, and the outlet conduit 31 of this machine only has position in expanding machine running along its axial direction Move, inlet pipeline 31 along its axial direction in addition to having displacement, and because the metal material under low temperature shrinks, inlet pipeline 30 is also perpendicular along it Diameter is to there is displacement.

One embodiment of the present utility model provides a kind of device 35 for being used to reduce slewing ozzle load, at this In embodiment, the outlet conduit of turbo-expander is axially having displacement, radial direction without displacement (dx ≠ 0, dx are about 10-20mm, Dy=0, dz=0).Support meanss can unload the stress from pipeline, by the torque { Mx, My, Mz } for controlling three directions Make the shrinkage direction of pipeline consistent with turbo-expander with the line power { Fy, Fz } of both direction, keep pipeline and turbo-expander With one heart, the load of turbo-expander ozzle is reduced.Another embodiment of the present utility model is directed at Y direction (vertical direction) A kind of device for reducing equipment ozzle load is provided with the slewing for axially having displacement, the torque of both direction can be controlled The line power { Fy, Fz } of { Mx, My } and both direction, the support of vertical direction is provided for pipeline, has also unloaded pipeline vertical direction Stress caused by displacement, make the shrinkage direction of pipeline consistent with turbo-expander, greatly reduce turbo-expander ozzle Load.

The utility model is described further with reference to the accompanying drawings and examples.

It is a kind of to be used to reduce the device of slewing ozzle load, suitable for slewing along pipeline radial direction non-displacement, only Axially there is the situation of displacement, contacted by the sliding surface of friction pair, can be controlled except along axial (X to) the outer both direction of pipeline Displacement and control three directions (X, Y, Z) moment of torsion.The tube nozzle outlet pipeline edge of turbo-expander is horizontal in the present embodiment Directional spreding, ozzle is only along pipeline, axially (X to) has displacement, in radially (Y, Z-direction) non-displacement, pipe diameter 323mm, There is 3 ‰ shrinkage factor at -196 DEG C.CAESARII piping stress analysis softwares (CAESARII 2014 can be used:American Eagles figure Company Intergraph) calculate load of the pipeline to steel structure support.In the present embodiment, the load of the outlet of turbo-expander It is as follows, Fx=-1157N, Fy=-4308N, Fz=7261N, Mx=-1335Nm, My=-19317Nm, Mz=- 10131N·m.With STAAD STAAD.pro V8i software for calculation (STAAD STAAD.pro V8i:Bentley software companys) Steel construction parameter is calculated, as shown in Fig. 2 the device includes a diameter of 89mm, the hollow circular-tube that length is 200mm supports The friction pair that bar 4, M20*100mm regulating bolts 5, smooth stainless steel-steel pair component 3 and friction submember 2 form, The support bar 4 is four, and caliber is identical, and the one end of support bar 4 is radially separately fixed at the outer wall of pipeline 7 along pipeline along vertical radial direction Symmetrical both ends and along the symmetrical both ends of horizontal radial；Four friction submembers 3 are separately fixed at the another of corresponding support bar 4 End, friction submember 2 and two symmetrical regulating bolts 5 are fixed, and are rubbed between submember 3 and friction submember 2 and be It is slidably connected；The one end of regulating bolt 5 connection friction submember 2, the other end connects cold residing for the turbo-expander of surrounding The fixation steel construction 1 of case inner casing, the channel-section steel that fixed steel construction 1 is 100*50*6, length 1000mm；Length of side 170mm, thickness 10mm Square PTFE tabulars slide assemblies it is embedded or glue in the groove dug in advance on the sliding contact surface of friction submember 3 (see Fig. 4 (a)), and make the line swell increment of each PTFE tabulars slide assemblies in the range of embedded location tolerance, it is embedded The inner support plate of the flat slide assemblies of PTFE is combined with smooth stainless steel external support board couple.As shown in Fig. 4 (b), The flat slide assemblies of PTFE can also be fixed on the center of friction submember 3 or the submember 2 that rubs by sunk screw 14 Position, PTFE tabulars slide assemblies can reduce the dry sliding friction coefficient between internal friction pair, and it is axially displaced to reduce pipeline When the stress that is subject to.The regulating bolt 5 tightens adjusting nut 6 by the defined position of M20mm adjusting nuts 6, regulation friction pair it Between clearance distance, make friction auxiliary air gap close to 0mm.The ozzle sealing surface (flange connections) of the outlet conduit of slewing with Distance of the support bar between the bearing of pipeline outer wall and expanding machine self structure, the design of piping load and steel structure support It is relevant, in the present embodiment support bar pipeline outer wall bearing and turbo-expander outlet conduit ozzle sealing surface flange it Between distance L be 600mm (see Fig. 1).

It is of the present utility model to be used to reduce the device 35 of slewing ozzle load another embodiment provides for a kind of, fit Axially there is displacement along pipeline for slewing, radially a direction (being usually vertical Y-direction) has displacement, and another is radially The situation of (being typically horizontally oriented) non-displacement.In the present embodiment, the ozzle inlet pipeline of turbo-expander divides in the horizontal direction Cloth, along pipeline, axially (X to) has displacement to ozzle, is radially having displacement in (Y-direction) vertical, but in horizontal radial non-displacement (Z-direction). Pipe diameter is 323mm.Use CAESARII piping stress analysis softwares (CAESARII 2014:Intergraph Company of the U.S. Intergraph load of the pipeline to steel structure support) is calculated.In the present embodiment, the load of the import of turbo-expander is such as Under, Fx=-397N, Fy=-244N, Fz=4658N, Mx=5652Nm, My=-23750Nm, Mz=0Nm, suspension type Spring hanger load is 13000N, sitting posture spring support load is 13000N.According to stressing conditions, with STAAD STAAD.pro V8i software for calculation (STAAD STAAD.pro V8i:Bentley software companys) calculated, as shown in figure 3, The device includes two support bars 4, and support bar 4 is diameter 89mm, length 200mm hollow circular-tube, M20*100mm regulating bolts 5, rub submember 3 and rub two friction pairs 20 and 21 that submember 2 forms, sitting posture spring 9 and suspended spring 8, described The one end of support bar 4 is separately fixed at the outer wall of pipeline 7 along the symmetrical both ends of horizontal radial；Two friction submembers 3 are fixed on correspondingly Support bar 4 the other end, submember 2 and the regulating bolt 5 of rubbing are fixed, and are rubbed between submember 3 and friction submember 2 and be It is slidably connected；The one end of regulating bolt 5 connection friction submember 2, the other end are connected in the ice chest residing for turbo-expander On the fixation steel construction 1 of shell, the channel-section steel that steel construction 1 is 100*50*6, length 1000mm are fixed；The regulating bolt 5 is by M20mm The defined position of adjusting nut 6, adjust the gap between two pairs of friction pairs 20 and 21；Around the lower end of sitting posture spring 9 is fixed on Fixation steel construction on 1, upper end is fixed with a upper flat plate 10, the upper flat plate 10 and the lower flat board 11 for being fixed on duct bottom Slip is connected to form a friction pair 22, embedded with length of side 170mm, thickness 22mm square PTFE tabulars on upper flat plate 10 Slide assemblies；The upper end of suspended spring 8 is fixed on the fixation steel construction 1 of surrounding by sleeve 15, under suspended spring 8 End is fixed on the fixed connecting base 16 of conduit upper by a M24*300mm threaded connecting rod 12.Two pieces of length of sides The PTFE tabulars slide assemblies of 170mm, thickness 10mm square are separately fixed at friction pair 20 and 21 by sunk screw Rub on the sliding contact surface of submember 2, be fixed with the friction submember 2 and mirror face stainless steel material of PTFE tabular slide assemblies The sliding contact of friction submember 3 of matter.Contacted by sitting posture spring 9 and suspended spring 8, and by the face of friction pair, control Tubing giving sufficient strength radially (Y-direction) displacement, while supporting pipeline 7, pipeline is removable at axial direction (X to), and pipeline is radially having torsion in (Z-direction) Square, rotatable (gripping Z axis can turn), Ry and Rx can not rotate, spacing mutually.By the position-limiting action of the present apparatus, to pipe Line plays guide effect.

It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, it is every Any simple modification that implementation is made to more than according to the utility model technical spirit, change and equivalent structure change, still Belong in the protection domain of technical solutions of the utility model.For example, in embodiment 1, two pairs of support bars 4 are orthogonal, It is not necessarily intended to along horizontal radial and vertically be radially arranged, can be with horizontal/vertical radial direction at an angle.It is cited in this specification As " on ",

" under ", the term of "left", "right" and " one " etc., be merely convenient to understanding for narration, and be not used to limit this practicality New enforceable scope, its relativeness are altered or modified, in the case where changing technology contents without essence, when being also considered as this practicality New enforceable category.

Claims (17)

1. a kind of device for being used to reduce slewing ozzle load, comprising four support bars (4), regulating bolt (5), adjusts spiral shell Female (6), four friction pairs, fixed steel construction (1), it is characterised in that

Four support bars (4) are divided into two pairs, and one end of each pair support bar (4) is fixed on pipeline along pipeline (7) radial symmetric (7) on outer wall, two pairs of support bars (4) are orthogonal；

Four friction pairs form by two components being slidably connected, and one of component (3) is fixed on corresponding support The other end of the bar (4) away from pipeline (7) direction, another component (2) connection regulating bolt (5), and it is fixed by regulating bolt (5) On fixed steel construction (1), the contact surface between two components is sliding contact surface；

The regulating bolt (5) adjusts the clearance gap between the sliding contact surface of each friction pair by adjusting nut (6) defined position From.

2. device according to claim 1, it is characterised in that the material of the sliding contact surface of the friction pair is smooth Stainless steel plate or carbon steel sheet.

3. device according to claim 1, it is characterised in that tabular is provided between the sliding contact surface of the friction pair Slide assemblies (13).

4. device according to claim 3, it is characterised in that the material of the slide assemblies (13) is selected from polytetrafluoroethylene (PTFE) Or PTFE-based composites.

5. device according to claim 3, it is characterised in that the slide assemblies (13) can be fixed by sunk screw (14) In the sliding friction surface of any one component of friction pair.

6. device according to claim 3, it is characterised in that the slide assemblies (13), which can inlay, is fixed on friction pair times In the groove anticipated in the sliding friction surface of a component.

7. the device according to claim 5 or 6, it is characterised in that slide assemblies (13) are two panels, are separately fixed at friction In the sliding friction surface of two secondary components.

8. device according to claim 1, it is characterised in that the inlet/outlet pipe road ozzle sealing surface of slewing and support Bar (4) is 500-600mm in the distance between bearing of pipeline (7) outer wall.

9. device according to claim 1, it is characterised in that support bar (4) is hollow circular-tube or solid circular pipe.

10. device according to claim 9, it is characterised in that four support bar (4) calibers are identical.

11. device according to claim 1, it is characterised in that each friction submember of connection and fixed steel construction (1) Regulating bolt (5) is 2 or 4, and symmetrical.

12. a kind of device for being used to reduce slewing ozzle load, includes two support bars (4), regulating bolt (5), regulation Nut (6), two friction pairs (20,21) for being connected to support bar (4), sitting posture spring (9) and suspended spring (8), fixed steel Structure (1), it is characterised in that

Described two support bars (4), one end of support bar (4) are symmetrically fixed on the two of pipeline (7) outer wall in the horizontal direction respectively End；

Described two friction pairs (20,21) form by two components being slidably connected, and one of component (3) is fixed on correspondingly One section of support bar (4), another component (2) connection regulating bolt (5), and fixed steel knot is fixed on by regulating bolt (5) On structure (1), the contact surface between two components is sliding contact surface；

The regulating bolt (5) adjusts the clearance gap between the sliding contact surface of each friction pair by adjusting nut (6) defined position From；

Sitting posture spring (9) lower end is fixed on the fixation steel construction (1) of surrounding, and upper end is fixed with a upper flat plate (10), The upper flat plate (10) is slidably connected to form a friction for being connected to spring with being fixed on the lower flat board (11) of pipeline (7) bottom Secondary (22)；

Suspended spring (8) upper end is fixed on the fixation steel construction (1) of surrounding, lower end by a connecting rod (12) with Pipeline (7) top connects.

13. device according to claim 12, it is characterised in that the friction pair (20,21) for being connected to support bar (4) Material with the sliding contact surface for the friction pair (22) for being connected to spring is stainless steel plate, carbon steel sheet, polytetrafluoroethylene (PTFE) or poly- four Fluoride-based composite.

14. device according to claim 12, it is characterised in that flat board is provided between the sliding contact surface of the friction pair The slide assemblies (13) of shape.

15. device according to claim 14, it is characterised in that the material of slide assemblies (13) be selected from polytetrafluoroethylene (PTFE) or PTFE-based composites.

16. device according to claim 12, it is characterised in that the inlet/outlet pipe road ozzle sealing surface of slewing and branch Strut (4) is 500-600mm in the distance between bearing of pipeline (7) outer wall.

17. the device according to claim 1 or 12, it is characterised in that slewing is including but not limited to turbine, steamer Machine, turbine, centrifugal compressor.