CN102297309A - Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof - Google Patents
Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof Download PDFInfo
- Publication number
- CN102297309A CN102297309A CN2011102238379A CN201110223837A CN102297309A CN 102297309 A CN102297309 A CN 102297309A CN 2011102238379 A CN2011102238379 A CN 2011102238379A CN 201110223837 A CN201110223837 A CN 201110223837A CN 102297309 A CN102297309 A CN 102297309A
- Authority
- CN
- China
- Prior art keywords
- pipe
- welding
- water
- ring
- bellows
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a telescopic device of an ultra-large caliber water-conducting pressure steel pipe of a water power station and a method for manufacturing a corrugated pipe thereof. The telescopic device comprises a middle pipe and telescopic joints at the front end and the rear end of the middle pipe; the telescopic joints at the front end and the rear end have identical structures, i.e. corrugated telescopic joints with corrugated pipe water-sealed rubber filler water-sealing dual structures; and the corrugated telescopic joints with the corrugated pipe water-sealed rubber filler water-sealing dual structures are sleeve-type double-way telescopic joints, the dual water seal of which consists of a stainless steel corrugated pipe water-seal system and a rubber filler water-seal system. The method has the following technical processes: blanking size calculating, blanking, automatic welding, fault detecting, sleeve embedding, retainer ring mounting, spinning-pressing molding, edge trimming, groove grinding, positioned spot welding, sealing and inspecting. The telescopic device provided by the invention can satisfy with the requirements of strength, rigidity, stability, deformation fatigue life and tightness for water-conducting pressure steel pipes between dams in a large-capacity water power station.
Description
Technical field
The present invention relates to a kind of pipeline expansion device and manufacture method thereof, the manufacture method of particularly a kind of water power plant super large caliber diversion pressure steel tube expansion device and bellows thereof.
Background technique
As everyone knows, in the long pipeline engineering, consider the influence of environment to pipeline, especially the temperature effect pipeline expands with heat and contract with cold and the displacement of supporting frame, makes pipeline produce distortion.Concerning big capacity hydroelectric installation, for adapting to inhomogeneous deformation between factory, dam, on each diversion pressure steel tube, need to be provided with expansion device, this expansion device must satisfy the strict demand of intensity, rigidity, stability, distortion fatigue life and sealability, and this is to show a difficult problem that exists in the engineering.
Summary of the invention
One of purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art part, propose a kind of water power plant super large caliber diversion pressure steel tube expansion device, can satisfy the requirement of the intensity of diversion pressure steel tube, rigidity, stability, distortion fatigue life and sealing between the dam in the big capacity hydroelectric installation.
Two of purpose of the present invention is the manufacture method of the bellows in the super large caliber diversion pressure steel tube expansion device of water power plant.
For achieving the above object, the present invention adopts following technical proposals:
A kind of water power plant super large caliber diversion pressure steel tube expansion device, the slip joint that comprises an intervalve and front end and back end thereof, the slip joint structure that it is characterized in that described front end and back end is identical, be the bellow-type expansion joint of bellows water seal connection gum filler water seal dual structure, the bellow-type expansion joint of this bellows water seal connection gum filler water seal dual structure is the telescopic bi-directional expansion joint that corrugated stainless steel tubing seal water system and gum filler seal water system constitute double seal.
The structure of last pipe seal water system is: the two ends of described intervalve connect an end of two bellowss respectively, and the other end of two bellowss connects two end pipes, these two Guan Weiyi upstream extremity pipes of end and a downstream pipe respectively.
Above-mentioned bellows is a thin walled structures, and by 2～6 layers, wall thickness is that the U-shaped Stainless Sheet Steel of 1～2mm constitutes, and wave height is 90mm～110mm, and the ripple number is 2～3.
Between two ripples of the above-mentioned bellows outside, a ripple stiffening ring is set, the interior bore edges semicircular in shape of this ripple stiffening ring and join with the trough of bellows contacts.
A stiffening ring is respectively welded in the above-mentioned outside, intervalve two end part.
Respectively there is a protection outer sleeve in two above-mentioned bellows outsides; this protection outer sleeve is that an end of an outer sleeve is integrally welded with upstream extremity pipe and downstream pipe respectively by an outside end ring and floor; inboard end ring of the other end welding of outer sleeve; the endoporus and the intervalve cunning of inboard end ring are joined, and two protection outer sleeves are included in two bellowss, ripple stiffening ring and stiffening ring in its inner chamber respectively.
Between the two ends inwall of above-mentioned intervalve and the upstream and downstream end inner tube wall guide shell is arranged respectively, the welding of an end of two guide shells and intervalve or upstream extremity pipe, the other end is cantilever and intervalve or downstream inner tube wall cunning are joined respectively.
On the circumferential weld of above-mentioned guide shell and intervalve or the welding of upstream and downstream end pipe, be provided with 80～100 resistances along circumference and split plate, it is 8～12mm that plate thickness is split in this resistance, and ovalize, its major axis are 100～120mm, and minor axis is 60～80mm.
The structure of above-mentioned gum filler seal water system is: one is connected a trim ring assembly with filler thimble assembly that described inboard end ring is fixedly connected into one by bolt and nut, settles a rubber assembly in the annular chamber that forms between intervalve outer wall, inboard end ring outer wall, filler thimble assembly inwall and trim ring assembly end wall.
The structure of above-mentioned filler thimble assembly is: filler sleeve pipe of inboard end ring (10) welding, and flange circle of welding on this filler sleeve pipe, this flange circle connects circumferential uniform bolt penetration hole on the flange circle by circumferential uniform reinforcement gusset and medial extremity boxing; The structure of described trim ring assembly is: slide on the intervalve outer wall and join a trim ring, connecting ring of this trim ring middle part welding, circumferentially uniform bolt penetration hole is corresponding with bolt penetration hole item on the flange circle on this connecting ring, is connected with the adjustable of flange circle by screw bolt and nut realization connecting ring; Described rubber assembly is to be made of side by side a plurality of rubber rings, is General Purpose Rubber circle hydro-expansive rubber circle and General Purpose Rubber circle and constitutes side by side for three sections; The endoporus side of these rubber rings is stained with polytetrafluoroethylene film.
Be provided with bidirectionally limited device between the slip joint of above-mentioned intervalve front end and back end, the structure of this bidirectionally limited device is: each circumferential uniform a plurality of push rod connecting base on the outer sleeve at intervalve two ends, two relative push rod support plates of the intervalve circumferential uniform installation in middle part, be connected a spacing push rod between push rod connecting base and the push rod support plate, can transpose by spacing adjusting nut between this spacing push rod and the push rod connecting base is connected, and settles a positive stop between two relative push rod support plates.
The manufacture method of the bellows of a kind of water power plant super large caliber diversion pressure steel tube expansion device is used for making the super large caliber bellows of above-mentioned water power plant super large caliber diversion pressure steel tube expansion device, it is characterized in that the concrete steps of this method are:
A. calculate blank size;
B. blanking;
C. weldering automatically;
D. flaw detection;
E. edge overlaps;
F. adorn back-up ring;
G. mould pressing;
H. cut edge;
I. groove polishing;
J. tack-weld;
K. seal.
The concrete steps of this method are:
A. calculate blank size:
1. girth: the bellows bore can produce contraction when considering mould pressing, will put surplus when therefore outer girth calculates, and diameter amplifies 10, and later every internal layer girth difference is thought of as 11;
2. material is grown: the single ripple material of spin-on process is grown computational methods and is, 2H+T, H are wave height, and T is a roll thickness, and roll thickness is to decide according to the pitch of waves;
B. blanking:
1. blank size: according to girth, material is long and the thickness blanking;
2. every cylindrical shell is considered a weld seam, and raw material adopts 1.5 * 700 * 40M winding;
3. earlier that the winding material is stretching during blanking, by above-mentioned size line, note guaranteeing diagonal again, cut out by line again;
C. weldering automatically:
1. carry out welding procedure qualification before the bellows welding of longitudinal seam earlier;
2. prepare before the welding:
3. welding parameter: argonaut welding is adopted in welding, and filler wire recommends welding parameter as follows: straight polarity direct current, electric current 90～120A, voltage 12～15V; Welding speed 10～15cm/min; Tungsten electrode diameter of phi 1.6, argon flow amount 6～10L/min, two-sided protection;
D. flaw detection
1. weld seam PT100% meets 5.5.1.2 regulation among the GB/T12777-2008;
2. seam inspection carries out acid wash passivation after qualified and handles;
E. edge overlaps
1. should check each layer pipe no any defective in surface and dirt before the fit;
2. should be from outside to inside fit in layer, overlap fashionable application wooden mallet along around knock outer pipe gently, itself and internal layer pipe are evenly fitted;
3. the longitudinal seam that overlaps fashionable 4 layers of pipe should along the circumferential direction evenly stagger, and minimum separable should be greater than 1M;
F. adorn back-up ring
1. pipe two ends dress back-up ring is the necessary condition of mould pressing, and purpose is the support force that strengthens pipe, avoids pipe wrinkling in spinning process;
2. support ring adopts the 10# channel-section steel, is contained in the pipe inner radius, and size should be considered the gap with pipe internal diameter 2mm, and ovality will guarantee less than 20mm, with the connecting means of pipe be manual argon arc welding;
G. mould pressing
1. rule by the long 100+250 * 2+100 of material at outer surface of tube blank;
2. pipe is put into equipment, proofread and correct the carrying roller distance, guarantee cylindrical shell and lower roll distance 10～15mm;
3. begin to revolve from last ground roll, each rolling reduction 5～7mm, top roll be the while move left and right when rotating, and to guarantee all to obtain hole enlargement in the long scope of a ripple material, the corresponding while axial compression of lower roll repeats above action, reaches the waveform size requirement until the 1st ripple;
H. cut edge
1. line: the back bellows that is shaped, on the platform of horizontal check, placing with nature, be that benchmark is got at 8 and rule with the ripple inboard in a circumferential direction, error is not more than 1mm;
2. cut edge: with plasma cutting machine outer cutting the along the line, the port after the cutting is straight, no significant defect;
I. groove is polished: the straight flange application wheel after the plasma cutting is polished and groove, removes all metals of cutting outer surface simultaneously and drips impurity or defectives such as mark, groove mark, necessary uniform and smooth, the no loose matter in cut edge;
J. tack-weld: the mouth of pipe edge after groove is finished carries out split fix spot welding, and section gap is 100mm ± 15mm; During tack-weld, should fit tightly between 4 layers of pipe, available in case of necessity anchor clamps clamp the back welding with 4 layers of pipe; Tack welding adopts argon arc welding;
K. seal: bellows carries out seal protection at the groove place at its two ends with the U-shaped rubber strip, carries out the Product Status mark.
The present invention compared with prior art, have following conspicuous substantive distinguishing features and advantage: slip joint of the present invention adopts corrugated stainless steel tubing seal water system and gum filler seal water system to constitute the telescopic bi-directional expansion joint of double seal, and the structure of these two systems all can satisfy the requirement of intensity, rigidity, stability, distortion fatigue life and sealing.The intensity of its bellows own can be born the interior pressure of aqueduct, the characteristic of bellows can compensate the axial and horizontal displacement of slip joint place pipeline, has solved between the factory dam once qualitative change position and penstock because of the flow direction downstream and the radial displacement compensation problem that welding stress, hydraulic head pressure and the four seasons current temperature difference produce is installed.The bellows outside is provided with the protection outer sleeve, guarantees the working life of bellows.Be provided with guide shell in the bellows inboard, reduce flow resistance.The gum filler seal water system constitutes the second road wiper seal, the hydro-expansive rubber circle is arranged, good seal performance in its sealing rubber ring.And the sticking multiple polytetrafluoroethylene film of the endoporus side of rubber ring, to reduce resistance to motion.For preventing to cause that because of damping is different one-sided bellows displacement is excessive.Slip joint along the circumferential direction is provided with bidirectionally limited device between upstream and downstream.The preparation process of the vital part super large caliber bellows that provides among the present invention can guarantee that high quality makes this super large caliber bellows reliably.
Description of drawings
Fig. 1 is the profile schematic representation of one embodiment of the invention.
Fig. 2 is the sectional view at A among Fig. 1-A place.
Fig. 3 is the three-dimensional partial structurtes figure at bellows place among Fig. 2.
Fig. 4 is the three-dimensional partial sectional view of Fig. 2.
Embodiment
Details are as follows in conjunction with the accompanying drawings for a preferred embodiment of the present invention:
Embodiment 1:Referring to Fig. 1 and Fig. 2, this water power plant super large caliber diversion pressure steel tube expansion device, the slip joint 5,4 that comprises an intervalve 2 and front end and back end thereof, slip joint 5,4 structures of described front end and back end are identical, be the bellow-type expansion joint of bellows water seal connection gum filler water seal dual structure, the bellow-type expansion joint of this bellows water seal connection gum filler water seal dual structure is the telescopic bi-directional expansion joint that corrugated stainless steel tubing seal water system and gum filler seal water system constitute double seal.
Embodiment 2:Present embodiment is substantially the same manner as Example 1, specialization is as follows: the structure of described corrugated stainless steel tubing seal water system is: the two ends of described intervalve 2 connect an end of two bellowss 19 respectively, the other end of two bellowss 19 connects two end pipes, these two Guan Weiyi upstream extremity pipes 1 of end and a downstream pipe 3 respectively.Described bellows 19 is a thin walled structures, and by 2～6 layers, wall thickness is that the U-shaped Stainless Sheet Steel of 1～2mm constitutes, and wave height is 90mm～110mm, and the ripple number is 2～3.Between two ripples of described bellows 19 outsides, a ripple stiffening ring 18 is set, the interior bore edges semicircular in shape of this ripple stiffening ring 18 and inconsistent with the trough of bellows 19.
Embodiment 3: referring to Fig. 2 and Fig. 3, present embodiment is substantially the same manner as Example 2, and specialization is as follows: a stiffening ring 9 is respectively welded in the outside, described intervalve 2 two end part.Respectively there is a protection outer sleeve in described two bellows 19 outsides; this protection outer sleeve is that an end of an outer sleeve 8 is integrally welded with upstream extremity pipe 1 and downstream pipe 3 respectively by an outside end ring 7 and floor 6; inboard end ring 10 of the other end welding of outer sleeve 8; the endoporus of inboard end ring 10 and 2 sliding joining of intervalve, two protection outer sleeves are included in two bellowss 19, ripple stiffening ring 18 and stiffening ring 9 in its inner chamber respectively.One end and the intervalve 2 or 1 welding of upstream extremity pipe of a guide shell 20, two guide shells 20 are respectively arranged between the two ends inwall of described intervalve 2 and upstream and downstream end pipe 1,3 inwalls, and the other end is cantilever and joins with intervalve 2 or downstream pipe 3 inwall cunnings respectively.On the circumferential weld of described guide shell 20 and intervalve 2 or 1 welding of upstream extremity pipe, be provided with 80～100 resistances along circumference and split plate 21, it is 8～12mm that plate 21 thickness are split in this resistance, and ovalize, its major axis are 100～120mm, and minor axis is 60～80mm.
Embodiment 4: referring to Fig. 2, present embodiment is substantially the same manner as Example 3, specialization is as follows: the structure of described gum filler seal water system is: one is connected a trim ring assembly with the described inboard end ring 10 fixedly connected filler thimble assemblies that are integral by bolt and nut, settles a rubber assembly 7 in the annular chamber that forms between intervalve 2 outer walls, inboard end ring 10 outer walls, filler thimble assembly inwall and trim ring assembly end wall.The structure of described filler thimble assembly is: filler sleeve pipe 12 of inboard end ring 10 welding, flange circle 13 of welding on this filler sleeve pipe 12, this flange circle 13 is by circumferentially uniform reinforcement gusset 11 and inboard end ring 10 welding, circumferential uniform bolt penetration hole on the flange circle 13; The structure of described trim ring assembly is: slide on intervalve 2 outer walls and join a trim ring 14, connecting ring 16 of this trim ring 14 middle parts welding, circumferentially uniform bolt penetration hole is corresponding with bolt penetration hole item on the flange circle 13 on this connecting ring 16, is connected with the adjustable of flange circle 13 by screw bolt and nut realization connecting ring 16; Described rubber assembly 17 is to be made of side by side a plurality of rubber rings, is General Purpose Rubber circle hydro-expansive rubber circle and General Purpose Rubber circle and constitutes side by side for three sections; The endoporus side of these rubber rings is stained with polytetrafluoroethylene film.
Embodiment 5: referring to Fig. 4, present embodiment is substantially the same manner as Example 3, specialization is as follows: the slip joint 5 of described intervalve 2 front end and back end, be provided with bidirectionally limited device between 4, the structure of this bidirectionally limited device is: each circumferential uniform a plurality of push rod connecting base 22 on the outer sleeve 8 at intervalve 2 two ends, two relative push rod support plates 23 of the circumferential uniform installation in intervalve 2 middle parts, be connected a spacing push rod 24 between push rod connecting base 22 and the push rod support plate 23, can transpose by spacing adjusting nut 25 between this spacing push rod 24 and the push rod connecting base 22 is connected, and settles a positive stop 26 between two relative push rod support plates 23.
Embodiment 6: referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, written or printed documents water power plant super large caliber diversion pressure steel tube expansion device is applied to water power plant, tame dam single-machine capacity 800MW, is the hydroelectric installation of present domestic maximum capacity.For adapting to inhomogeneous deformation between factory, dam, be provided with Φ 12200 bellow-type expansion joints at each diversion steel pipe end, abutment wall place, factory building upstream.Design internal water pressure 1.5MPa, external water pressure 0.75 MPa between gum filler water seal and the bellows, stream is taken out maximum relative displacement y=20 downstream, maximum relative displacement y=13 radially, the maximum displacement cycle-index is greater than 1000 times.
For guaranteeing the safe and reliable of water power plant, bellow-type expansion joint in apparatus of the present invention adopts " bellows water seal+gum filler water seal " dual structure scheme, and promptly structural type is the telescopic bi-directional expansion joint of corrugated stainless steel tubing water seal+gum filler seal water system double seal.Require the bellows system of slip joint and the design condition that the sleeve packign part all satisfies intensity, rigidity, stability, distortion fatigue life and sealability.
A. bellows seal water system
Bellows is designed to compound free type (4.1.2 bar among the GB/T12777-2008) according to international GB/T12777-2008 and the U.S. " EJMA " standard, and promptly two bellowss and end pipe are formed by intervalve connected.Each bellows is thin-walled (every layer is the 1.5m/m wall thickness), and multilayer (actual is 4 layers) is strengthened U type structure, and corrugated material is the SUS304 stainless steel.Wave height is 100m/m, and the pitch of waves is 100m/m, and the ripple number is 2.The intensity of bellows own can be born the interior pressure of aqueduct; Simultaneously because the characteristic of ripple can compensate the axial and horizontal displacement of bellow-type expansion joint two ends pipeline.Solve between factory and the dam once qualitative change position and penstock like this because of welding stress being installed, the flow direction downstream and radial displacement compensation problem that the hydraulic head pressure and the four seasons current temperature difference produce.
B. in the bellows outside, upstream and downstream respectively are provided with the protection outer sleeve of a reinforcement, and this outer sleeve also is the pressure boundary and the supporting base of the second road water seal (being the gum filler water seal) simultaneously.
In order to protect bellows, and reduce of the influence of corrugated pipe segment internal surface, a guide shell that flushes with the penstock internal surface respectively is set, the minimizing flow resistance in the steel pipe inboard of upstream and downstream corrugated pipe segment to flow.
The gum filler water seal is when in a single day the bellows water seal takes place to leak, and just works as wiper seal border, second road.The sealing bedding and padding adopt combination rubber (being General Purpose Rubber+hydro-expansive rubber+three sections combinations such as General Purpose Rubber), and the endoporus side of these rubber is pasted multiple polytetrafluoroethylene film to reduce resistance to motion.
C. cause that because of damping is different one-sided bellows displacement is excessive for preventing, slip joint respectively is provided with bidirectionally limited device along peripheral direction upstream and downstream, garden.Simultaneously, for ease of detecting the bellows leakage situation, outer sleeve bottom is established telltale hole.
At present, this Bellows expansion joint respectively in June, 2010 and October by criterion design review and type approval test (contain pressure test and band is pressed fatigue test), will enter erection stage recently.
Embodiment seven: the preparation method's of the super large caliber bellows in this water power plant super large caliber diversion pressure steel tube expansion device concrete steps are:
1. calculating blank size:
1. girth: the bellows bore can produce contraction when considering mould pressing, when calculating, therefore outer girth to put surplus, general diameter amplifies 10, every internal layer girth difference is thought of as 11 later on, therefore, perimeter dimension is 38435/38424/38413/38402.
2. material is long: the long computational methods of the single ripple material of spin-on process are, 2H+T, H are wave height, and T is a roll thickness, roll thickness is to decide according to the pitch of waves, the pitch of waves is 100, and therefore, roll thickness is chosen to be 50, because of wave height is 100, so 1 ripple material length is 250, other two ends have interface length and process allowance, and general every end is got length 100.
Therefore total material is long to be 100+250 * 2+100=700
2. blanking:
1. blank size: 38435/38424/38413/38402 * 700 * 1.5.
2. every cylindrical shell is considered a weld seam, so raw material adopts 1.5 * 700 * 40M winding.
3. earlier that the winding material is stretching during blanking, by above-mentioned size line, note guaranteeing diagonal again, cut out by line again.
3. weldering automatically
1. carry out welding procedure qualification before the bellows welding of longitudinal seam earlier.
2. prepare before the welding:
3. welding parameter:
Argonaut welding is adopted in welding, and filler wire not recommends welding parameter as follows:
Straight polarity direct current, electric current 90～120A, voltage 12～15V; Welding speed 10～15cm/min; Tungsten electrode diameter of phi 1.6, argon flow amount 6～10L/min, two-sided protection.
4. flaw detection
1. weld seam PT100% meets 5.5.1.2 regulation among the GB/T12777-2008.
2. seam inspection carries out acid wash passivation after qualified and handles.
5. edge overlaps
1. should check each layer pipe no any defective in surface and dirt before the fit.
2. should be from outside to inside fit in layer, overlap fashionable application wooden mallet along around knock outer pipe gently, itself and internal layer pipe are evenly fitted.
3. the longitudinal seam that overlaps fashionable 4 layers of pipe should along the circumferential direction evenly stagger, and minimum separable should be greater than 1M.
6. dress back-up ring
1. pipe two ends dress back-up ring is the necessary condition of mould pressing, and purpose is the support force that strengthens pipe, avoids pipe wrinkling in spinning process.
2. support ring adopts the 10# channel-section steel, is contained in the pipe inner radius, and size should be considered the gap with pipe internal diameter 2mm, and ovality will guarantee less than 20mm, with the connecting means of pipe be manual argon arc welding, see figure:
7. mould pressing
1. rule by the long 100+250 * 2+100 of material at outer surface of tube blank.
2. pipe is put into equipment, proofread and correct the carrying roller distance, guarantee cylindrical shell and lower roll distance 10～15mm.
3. begin to revolve from last ground roll, each rolling reduction 5～7mm, top roll be the while move left and right when rotating, and to guarantee all to obtain hole enlargement in the long scope of a ripple material, the corresponding while axial compression of lower roll repeats above action, reaches the waveform size requirement until the 1st ripple.
8. cut edge
1. line: the back bellows that is shaped, on the platform of horizontal check, placing with nature, be that benchmark is got at 8 and rule with the ripple inboard in a circumferential direction, error is not more than 1mm.
2. cut edge: with plasma cutting machine outer cutting the along the line, the port after the cutting is straight, no significant defect.
9. groove polishing
Straight flange application wheel after the plasma cutting is polished and groove, removes all metals of cutting outer surface simultaneously and drips impurity or defectives such as mark, groove mark, and the cut edge must uniform and smooth, no loose matter.
10. tack-weld
Mouth of pipe edge after groove is finished carries out split fix spot welding, and section gap is 100mm ± 15mm.During tack-weld, should fit tightly between 4 layers of pipe, available in case of necessity anchor clamps clamp the back welding with 4 layers of pipe.
Tack welding adopts argon arc welding.
11. seal
Bellows carries out seal protection at the groove place at its two ends with the U-shaped rubber strip, carries out the Product Status mark.
12. check
1. measure with qualified measurer by the exclusive surveyor.
2. test item: interface and trough outer perimeter, wave height, the pitch of waves, appearance.
Claims (11)
1. water power plant super large caliber diversion pressure steel tube expansion device, the slip joint (5,4) that comprises an intervalve (2) and front end and back end thereof, slip joint (5, the 4) structure that it is characterized in that described front end and back end is identical, be the bellow-type expansion joint of bellows water seal connection gum filler water seal dual structure, the bellow-type expansion joint of this bellows water seal connection gum filler water seal dual structure is the telescopic bi-directional expansion joint that corrugated stainless steel tubing seal water system and gum filler seal water system constitute double seal.
2. water power plant according to claim 1 super large caliber diversion pressure steel tube expansion device, the structure that it is characterized in that described corrugated stainless steel tubing seal water system is: the two ends of described intervalve (2) connect an end of two bellowss (19) respectively, the other end of two bellowss (19) connects two end pipes respectively, holds a Guan Weiyi upstream extremity pipe (1) and a downstream pipe (3) for these two.
3. water power plant according to claim 2 super large caliber diversion pressure steel tube expansion device, it is characterized in that described bellows (19) is a thin walled structures, by 2～6 layers, wall thickness is that the U-shaped Stainless Sheet Steel of 1～2mm constitutes, wave height is 90mm～110mm, and the ripple number is 2～3.
4. water power plant according to claim 3 super large caliber diversion pressure steel tube expansion device, it is characterized in that between two ripples of described bellows (19) outside, a ripple stiffening ring (18) is set, the interior bore edges semicircular in shape of this ripple stiffening ring (18) and contacting with the trough of bellows (19); A stiffening ring (9) is respectively welded in the outside, described intervalve (2) two end part; Respectively there is a protection outer sleeve in described two bellowss (19) outside; this protection outer sleeve is that an end of an outer sleeve (8) is integrally welded with upstream extremity pipe (1) and downstream pipe (3) respectively by an outside end ring (7) and gusset (6); a other end welding inboard end ring (10) of outer sleeve (8); the endoporus of inboard end ring (10) and intervalve (2) are sliding joins, and two protection outer sleeves are included in two bellowss (19), ripple stiffening ring (18) and stiffening ring (9) in its inner chamber respectively.
5. water power plant according to claim 2 super large caliber diversion pressure steel tube expansion device, it is characterized in that between the two ends inwall of described intervalve (2) and upstream and downstream end pipe (1, the 3) inwall guide shell (20) being arranged respectively, the welding of one end of two guide shells (20) and intervalve (2) or upstream extremity pipe (1,3), the other end are cantilever and intervalve (2) or downstream pipe (1,3) inwall cunning are joined respectively.
6. water power plant according to claim 5 super large caliber diversion pressure steel tube expansion device, it is characterized in that on the circumferential weld of described guide shell (20) and intervalve (2) or upstream and downstream end pipe (1,3) welding, be provided with 80～100 resistances along circumference and split plate (21), it is 8～12mm that plate (21) thickness is split in this resistance, ovalize, its major axis is 100～120mm, and minor axis is 60～80mm.
7. water power plant according to claim 1 super large caliber diversion pressure steel tube expansion device, the structure that it is characterized in that described gum filler seal water system is: one is connected a trim ring assembly with the fixedly connected filler thimble assembly that is integral of described inboard end ring (10) by bolt and nut, settles a rubber assembly (17) in the annular chamber that forms between intervalve (2) outer wall, inboard end ring (10) outer wall, filler thimble assembly inwall and trim ring assembly end wall.
8. water power plant according to claim 7 super large caliber diversion pressure steel tube expansion device, the structure that it is characterized in that described filler thimble assembly is: inboard end ring (a 10) welding filler sleeve pipe (12), this filler sleeve pipe (12) is gone up a welding flange circle (13), this flange circle (13) is by circumferentially uniform reinforcement gusset (11) and inboard end ring (10) welding, and flange circle (13) is gone up circumferential uniform bolt penetration hole; The structure of described trim ring assembly is: the sliding trim ring (14) of joining on intervalve (2) outer wall, this trim ring (14) middle part welding connecting ring (16), it is corresponding with bolt penetration hole item on the flange circle (13) that this connecting ring (16) is gone up circumferentially uniform bolt penetration hole, by adjustable being connected of screw bolt and nut realization connecting ring (16) with flange circle (13); Described rubber assembly (17) is to be made of side by side a plurality of rubber rings, is General Purpose Rubber circle hydro-expansive rubber circle and General Purpose Rubber circle and constitutes side by side for three sections; The endoporus side of these rubber rings is stained with polytetrafluoroethylene film.
9. water power plant according to claim 4 super large caliber diversion pressure steel tube expansion device, the slip joint (5 that it is characterized in that described intervalve (2) front end and back end, 4) be provided with bidirectionally limited device between, the structure of this bidirectionally limited device is: go up each circumferentially uniform a plurality of push rod connecting base (22) at the outer sleeve (8) at intervalve (2) two ends, intervalve (two relative push rod support plates (23) of (2) circumferential uniform installation in middle part, be connected a spacing push rod (24) between push rod connecting base (22) and the push rod support plate (23), can transpose by spacing adjusting nut (25) between this spacing push rod (24) and the push rod connecting base (22) is connected, and settles a positive stop (26) between two relative push rod support plates (23).
10. the manufacture method of the bellows of a water power plant super large caliber diversion pressure steel tube expansion device, be used for making super large caliber bellows, it is characterized in that the concrete technology of this method is according to the described water power plant of claim super large caliber diversion pressure steel tube expansion device:
Calculate blank size;
Blanking;
Automatically weldering;
Flaw detection;
The edge cover;
The dress back-up ring;
Mould pressing;
Cut edge;
The groove polishing;
Tack-weld;
Seal.
11. the preparation method of water power plant according to claim 10 super large caliber diversion pressure steel tube expansion device is characterized in that the concrete steps of described each process step are:
A. calculate blank size:
1. girth: the bellows bore can produce contraction when considering mould pressing, will put surplus when therefore outer girth calculates, and diameter amplifies 10, and later every internal layer girth difference is thought of as 11;
2. material is grown: the single ripple material of spin-on process is grown computational methods and is, 2H+T, H are wave height, and T is a roll thickness, and roll thickness is to decide according to the pitch of waves;
B. blanking:
1. blank size: according to girth, material is long and the thickness blanking;
2. every cylindrical shell is considered a weld seam, and raw material adopts 1.5 * 700 * 40M winding;
3. earlier that the winding material is stretching during blanking, by above-mentioned size line, note guaranteeing diagonal again, cut out by line again;
C. weldering automatically:
1. carry out welding procedure qualification before the bellows welding of longitudinal seam earlier;
2. prepare before the welding:
3. welding parameter: argonaut welding is adopted in welding, and filler wire recommends welding parameter as follows: straight polarity direct current, electric current 90～120A, voltage 12～15V; Welding speed 10～15cm/min; Tungsten electrode diameter of phi 1.6, argon flow amount 6～10L/min, two-sided protection;
D. flaw detection
1. weld seam PT100% meets 5.5.1.2 regulation among the GB/T12777-2008;
2. seam inspection carries out acid wash passivation after qualified and handles;
E. edge overlaps
1. should check each layer pipe no any defective in surface and dirt before the fit;
2. should be from outside to inside fit in layer, overlap fashionable application wooden mallet along around knock outer pipe gently, itself and internal layer pipe are evenly fitted;
3. the longitudinal seam that overlaps fashionable 4 layers of pipe should along the circumferential direction evenly stagger, and minimum separable should be greater than 1M;
F. adorn back-up ring
1. pipe two ends dress back-up ring is the necessary condition of mould pressing, and purpose is the support force that strengthens pipe, avoids pipe wrinkling in spinning process;
2. support ring adopts the 10# channel-section steel, is contained in the pipe inner radius, and size should be considered the gap with pipe internal diameter 2mm, and ovality will guarantee less than 20mm, with the connecting means of pipe be manual argon arc welding;
G. mould pressing
1. rule by the long 100+250 * 2+100 of material at outer surface of tube blank;
2. pipe is put into equipment, proofread and correct the carrying roller distance, guarantee cylindrical shell and lower roll distance 10～15mm;
3. begin to revolve from last ground roll, each rolling reduction 5～7mm, top roll be the while move left and right when rotating, and to guarantee all to obtain hole enlargement in the long scope of a ripple material, the corresponding while axial compression of lower roll repeats above action, reaches the waveform size requirement until the 1st ripple;
The spinning of the 2nd ripple by the 3. bar carry out, and the other end interface is carried out hole enlargement or shrinks spinning;
H. cut edge
1. line: the back bellows that is shaped, on the platform of horizontal check, placing with nature, be that benchmark is got at 8 and rule with the ripple inboard in a circumferential direction, error is not more than 1mm;
2. cut edge: with plasma cutting machine outer cutting the along the line, the port after the cutting is straight, no significant defect;
I. groove is polished: the straight flange application wheel after the plasma cutting is polished and groove, removes all metals of cutting outer surface simultaneously and drips impurity or defectives such as mark, groove mark, necessary uniform and smooth, the no loose matter in cut edge;
J. tack-weld: the mouth of pipe edge after groove is finished carries out split fix spot welding, and section gap is 100mm ± 15mm; During tack-weld, should fit tightly between 4 layers of pipe, available in case of necessity anchor clamps clamp the back welding with 4 layers of pipe; Tack welding adopts argon arc welding;
K. seal: bellows carries out seal protection at the groove place at its two ends with the U-shaped rubber strip, carries out the Product Status mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102238379A CN102297309A (en) | 2011-08-05 | 2011-08-05 | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102238379A CN102297309A (en) | 2011-08-05 | 2011-08-05 | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102297309A true CN102297309A (en) | 2011-12-28 |
Family
ID=45357910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102238379A Pending CN102297309A (en) | 2011-08-05 | 2011-08-05 | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102297309A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553963A (en) * | 2012-02-29 | 2012-07-11 | 株洲南方燃气轮机成套制造安装有限公司 | Method for processing reducing corrugated pipe |
| CN103212913A (en) * | 2013-04-25 | 2013-07-24 | 河北钢铁股份有限公司唐山分公司 | Fitting up and welding method of major-diameter thin-wall stainless steel bellows |
| CN103316948A (en) * | 2013-06-20 | 2013-09-25 | 浙江中星钢管机械有限公司 | Intelligent blank tube product line |
| CN103481513A (en) * | 2013-09-23 | 2014-01-01 | 苏州市涵信塑业有限公司 | Method for processing PTFE-coated rubber sealing gasket |
| CN107414424A (en) * | 2017-07-26 | 2017-12-01 | 东方电气集团东方锅炉股份有限公司 | A kind of forming method of large diameter thin wall stainless steel cylinder |
| CN107414502A (en) * | 2017-05-06 | 2017-12-01 | 芜湖瑞德机械科技有限公司 | A kind of embryonic tube machining production line of stainless steel ripple smoke pipe |
| CN108747077A (en) * | 2018-06-29 | 2018-11-06 | 中国葛洲坝集团机电建设有限公司 | A kind of adjacent mounting system and method filled out penstock between pier and close up section |
| CN109185590A (en) * | 2018-10-31 | 2019-01-11 | 江阴市扬子管件有限公司 | A kind of energy-saving, environment-friendly and high-efficiency concetrated pipe and its production technology |
| CN109623262A (en) * | 2018-10-29 | 2019-04-16 | 江苏丰禾机械制造股份有限公司 | A kind of on-site assembly method of Bellows expansion joint |
| CN110778841A (en) * | 2019-10-30 | 2020-02-11 | 铜陵新创流体科技有限公司 | Double-ripple metal expansion piece |
| CN111250932A (en) * | 2020-02-26 | 2020-06-09 | 浙江富春江水电设备有限公司 | Manufacturing method of thin-wall slender spindle for high-temperature and high-speed working condition |
| CN111975238A (en) * | 2020-08-24 | 2020-11-24 | 成都众远管业有限公司 | Compensator ring pressure welding method |
| CN113389942A (en) * | 2021-06-28 | 2021-09-14 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
| CN113833924A (en) * | 2021-10-27 | 2021-12-24 | 南京晨光东螺波纹管有限公司 | Double water seal expansion joint |
| CN116293112A (en) * | 2023-05-16 | 2023-06-23 | 江苏宝恒管件有限公司 | High-strength metal corrugated pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871689A (en) * | 1973-03-01 | 1975-03-18 | Nikolai Nikolaevich Zaderei | Device for sealing a high-temperature conduit |
| CN2184841Y (en) * | 1994-03-28 | 1994-12-07 | 于宁 | Corrugated expansion joint |
| CN2236064Y (en) * | 1995-09-27 | 1996-09-25 | 敖祖光 | Corrugated-pipe sleeve combined compensator |
| CN201137785Y (en) * | 2007-10-01 | 2008-10-22 | 袁国栋 | Corrugated pipe compensator |
| CN202182285U (en) * | 2011-08-05 | 2012-04-04 | 上海永鑫波纹管有限公司 | Ultra-large diameter diversion pressure steel pipe expansion device of hydropower station |
-
2011
- 2011-08-05 CN CN2011102238379A patent/CN102297309A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871689A (en) * | 1973-03-01 | 1975-03-18 | Nikolai Nikolaevich Zaderei | Device for sealing a high-temperature conduit |
| CN2184841Y (en) * | 1994-03-28 | 1994-12-07 | 于宁 | Corrugated expansion joint |
| CN2236064Y (en) * | 1995-09-27 | 1996-09-25 | 敖祖光 | Corrugated-pipe sleeve combined compensator |
| CN201137785Y (en) * | 2007-10-01 | 2008-10-22 | 袁国栋 | Corrugated pipe compensator |
| CN202182285U (en) * | 2011-08-05 | 2012-04-04 | 上海永鑫波纹管有限公司 | Ultra-large diameter diversion pressure steel pipe expansion device of hydropower station |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553963A (en) * | 2012-02-29 | 2012-07-11 | 株洲南方燃气轮机成套制造安装有限公司 | Method for processing reducing corrugated pipe |
| CN102553963B (en) * | 2012-02-29 | 2014-02-12 | 株洲南方燃气轮机成套制造安装有限公司 | Method for processing reducing corrugated pipe |
| CN103212913B (en) * | 2013-04-25 | 2015-09-02 | 河北钢铁股份有限公司唐山分公司 | A kind of group of large diameter thin wall corrugated stainless steel tubing to and welding method |
| CN103212913A (en) * | 2013-04-25 | 2013-07-24 | 河北钢铁股份有限公司唐山分公司 | Fitting up and welding method of major-diameter thin-wall stainless steel bellows |
| CN103316948A (en) * | 2013-06-20 | 2013-09-25 | 浙江中星钢管机械有限公司 | Intelligent blank tube product line |
| CN103316948B (en) * | 2013-06-20 | 2015-07-08 | 浙江中星钢管机械有限公司 | Intelligent blank tube product line |
| CN103481513A (en) * | 2013-09-23 | 2014-01-01 | 苏州市涵信塑业有限公司 | Method for processing PTFE-coated rubber sealing gasket |
| CN107414502A (en) * | 2017-05-06 | 2017-12-01 | 芜湖瑞德机械科技有限公司 | A kind of embryonic tube machining production line of stainless steel ripple smoke pipe |
| CN107414424A (en) * | 2017-07-26 | 2017-12-01 | 东方电气集团东方锅炉股份有限公司 | A kind of forming method of large diameter thin wall stainless steel cylinder |
| CN107414424B (en) * | 2017-07-26 | 2019-10-15 | 东方电气集团东方锅炉股份有限公司 | A kind of forming method of large diameter thin wall stainless steel cylinder |
| CN108747077A (en) * | 2018-06-29 | 2018-11-06 | 中国葛洲坝集团机电建设有限公司 | A kind of adjacent mounting system and method filled out penstock between pier and close up section |
| CN109623262B (en) * | 2018-10-29 | 2021-11-26 | 江苏丰禾机械制造股份有限公司 | On-site assembling method of bellows expansion joint |
| CN109623262A (en) * | 2018-10-29 | 2019-04-16 | 江苏丰禾机械制造股份有限公司 | A kind of on-site assembly method of Bellows expansion joint |
| CN109185590A (en) * | 2018-10-31 | 2019-01-11 | 江阴市扬子管件有限公司 | A kind of energy-saving, environment-friendly and high-efficiency concetrated pipe and its production technology |
| CN110778841A (en) * | 2019-10-30 | 2020-02-11 | 铜陵新创流体科技有限公司 | Double-ripple metal expansion piece |
| CN111250932A (en) * | 2020-02-26 | 2020-06-09 | 浙江富春江水电设备有限公司 | Manufacturing method of thin-wall slender spindle for high-temperature and high-speed working condition |
| CN111250932B (en) * | 2020-02-26 | 2023-12-12 | 中国原子能科学研究院 | Manufacturing method of thin-wall slender main shaft for high-temperature high-speed working condition |
| CN111975238A (en) * | 2020-08-24 | 2020-11-24 | 成都众远管业有限公司 | Compensator ring pressure welding method |
| CN113389942A (en) * | 2021-06-28 | 2021-09-14 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
| CN113389942B (en) * | 2021-06-28 | 2022-07-19 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
| CN113833924A (en) * | 2021-10-27 | 2021-12-24 | 南京晨光东螺波纹管有限公司 | Double water seal expansion joint |
| CN116293112A (en) * | 2023-05-16 | 2023-06-23 | 江苏宝恒管件有限公司 | High-strength metal corrugated pipe |
| CN116293112B (en) * | 2023-05-16 | 2023-07-21 | 江苏宝恒管件有限公司 | High-strength metal corrugated pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102297309A (en) | Telescopic device of ultra-large caliber water-conducting pressure steel pipe of water power station and method for manufacturing corrugated pipe thereof | |
| CN205048015U (en) | Compound pipe of high molecular weight polyethylene steel skeleton and equipment complex thereof | |
| CN112780875B (en) | B-type sleeve suitable for repairing large wall thickness difference butt-joint girth weld defects and machining method thereof | |
| CN201129586Y (en) | Polyethylene, steel bushing flange and pipeline connecting structure | |
| CN202182285U (en) | Ultra-large diameter diversion pressure steel pipe expansion device of hydropower station | |
| CN206320464U (en) | Repairing applied to PCCP pipe fittings connects section | |
| CN207229029U (en) | The auxiliary line fixing hoop of Offshore Drilling Riser | |
| CN113199202A (en) | Sleeve for repairing weld defects of connecting ring of three-way branch pipe and machining and repairing method | |
| CN110712005A (en) | Tank storage device based on hydraulic forming technology | |
| CN205362343U (en) | Compound pipe processingequipment of stainless steel | |
| CN104308446A (en) | Chain type external aligning device and method thereof | |
| CN103552238A (en) | Plastic pipe interface device | |
| CN103481514B (en) | A kind of plastics pipe interface technique | |
| CN106670283A (en) | Pipe end rolling process and equipment | |
| CN205217697U (en) | Pipe end rolling press device | |
| JP4213721B2 (en) | Flare processing pipe joint and steel pipe connection method using the pipe joint | |
| CN105436041A (en) | Steel-pipe internal-coating glass fiber reinforced plastic mouth-repairing apparatus | |
| CN203718191U (en) | Connection structure for inner and outer lining plastic composite steel pipes | |
| KR101451504B1 (en) | Method of fittings with overlay welding steel | |
| CN206764240U (en) | Pipeline butt welding positioning tool fixture | |
| KR20170134061A (en) | Stainless Steel Pipe with Corrugated Part and Connection Joint and Manufacturing Method Thereof | |
| CN207119643U (en) | A kind of stainless steel tube threeway makes practical pipe extractor | |
| KR102072794B1 (en) | Clad pipe producting apparatus using water pressure expansion and clad pipe producting method | |
| CN109140057B (en) | Double-wall pipe and manufacturing method thereof | |
| CN204504644U (en) | The even rotating speed group of a kind of tower type container is to device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111228 |