CN105605351A - Large-caliber T-shaped-port block-cast nodular cast iron pipe fitting - Google Patents
Large-caliber T-shaped-port block-cast nodular cast iron pipe fitting Download PDFInfo
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- CN105605351A CN105605351A CN201610193664.3A CN201610193664A CN105605351A CN 105605351 A CN105605351 A CN 105605351A CN 201610193664 A CN201610193664 A CN 201610193664A CN 105605351 A CN105605351 A CN 105605351A
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- Prior art keywords
- socket
- shaped
- pipe fitting
- pipe
- flange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/10—Sleeveless joints between two pipes, one being introduced into the other
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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
- F16L43/00—Bends; Siphons
- F16L43/001—Bends; Siphons made of metal
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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
- F16L43/00—Bends; Siphons
- F16L43/008—Bends; Siphons made from plastic material
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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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/153—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
Abstract
The invention relates to a large-caliber T-shaped-port block-cast nodular cast iron pipe fitting which solves the problems of high deformation tendency of the existing T-shaped-port pipe fitting with the low-radial-strength socket under the conditions of transportation and piling, difficulty in separating the pipe socket from the socket, and difficulty in matching with the PCCP pipe. The large-caliber T-shaped-port block-cast nodular cast iron pipe fitting is characterized in that the socket flange is added to and block-cast with the socket end of the T-shaped-port pipe fitting, and thread through holes are uniformly distributed on the socket flange. The large-caliber T-shaped-port block-cast nodular cast iron pipe fitting has the following advantages: the radial strength of the T-shaped-port socket is enhanced; the socket flange performs the mutual supporting function in the piling and transportation process; the pipe and pipe fitting can be prevented from deforming into ellipses without special protection; the pipe socket can be separated from the socket more conveniently, so that the replacement of the ring seal becomes simpler; and the ductile iron pipe fitting can be applied to the PCCP pipeline by utilizing the PCCP pipe port pipe fitting. The large-caliber T-shaped-port block-cast nodular cast iron pipe fitting is applicable to the aspects of elbow pipe fitting, T-shaped port pipe fittings, PCCP pipe port pipe fittings and centrifugal ductile iron pipes, and provides technical supports for lowering the material cost and increasing the construction speed.
Description
Technical field
The invention belongs to cast molding technology field, particularly the T-shaped interface block cast of heavy caliber nodular cast iron pipe fittings.
Background technology
Ductile iron pipe be with centrifugal casting technique produce a kind of cast tube, with it supporting nodular cast iron pipe fittings material withDuctile iron pipe is identical, is by lost foam casting process or resin sand explained hereafter. Nodular cast iron pipe fittings and spheroidal graphite cast-iron pipeThere is the essence of iron, the performance of steel, intensity is high, good toughness, corrosion-resistant, is widely used in metallurgy, mine, water conservancy, oil and cityThe various pipeline engineering that publicization of city built, can be used for carrying the multiple fluid such as water, combustion gas medium.
Nodular cast iron pipe fittings and ductile iron pipe are before cast, to add in molten iron in conjunction with nodulizer with magnesium or rare earth magnesium, makeSpheroidization of graphite, stress is concentrated and is reduced, make the material of pipe fitting and cast tube have that intensity is large, percentage elongation is high, shock-resistant, corrosion-resistant, closeThe advantages such as envelope property is good. The inwall of nodular cast iron pipe fittings and ductile iron pipe adopts cement-mortar lining, has improved pipeline water delivery ringBorder, has improved water supply capacity, has reduced energy consumption. The mouth of pipe adopts flexible interface, and tubing itself has larger percentage elongation (>7%), make the flexible of pipeline, in buried pipeline, can jointly work with the soil of pipeline, improve pipeline stress, fromAnd improve the reliability of pipe network operation.
In prior art, the sealing of ductile iron pipe waterline interface adopts 3 kinds of interface shapes mostly: T-shaped interface, KType interface and flange-interface, produce by ISO2531:2009 international standard and GB/T13295-2013 national standard. T-shaped interface bagDraw together socket, bellmouth, O-ring seal and cement mortar lining, between socket and bellmouth, be fixedly connected with by O-ring seal, do not needWant bolt to connect. The sealing of T-shaped interface is the sealing of leaning on O-ring seal and bellmouth, socket contact to produce convection cell, therefore,The dimensional discrepancy of bellmouth, socket and O-ring seal has been made to strict regulation, reliable to ensure sealing, generally at bellmouth and slottingThe compression ratio of the O-ring seal between mouthful will reach 25～40%, and therefore, bellmouth and socket in no instance can generation officesPortion's distortion, otherwise can cause interface to leak. In addition, the O-ring seal of T-shaped interface has self sealing action, so-called self sealing action,Be exactly O-ring seal while being subject to fluid pressure action, on O-ring seal, actual formation compresses institute in advance when contact equals to installProduce contact and fluid pressure action newly-increased contact sum on O-ring seal. Because contact compares fluid pressureGreatly, so can excellent sealing. Otherwise contact is less than fluid pressure, can cause sealing joint failure. According to the existing world andNational standard, generally, the maximum caliber of T-shaped interface is DN1600, is greater than DN1600 and adopts K type interface and flange to connect moreMouthful. DN1600 specification is the most extensive with the current T-shaped Application of Interface of underground pipelines, and advantage is that speed of application is fast, and the cost of material is low. ButBe, aspect construction, due to misoperation, O-ring seal can or be knocked over by drawing crack sometimes, and now bellmouth and socket have been in and have connectedConnecing state, want to change O-ring seal and just bellmouth must be separated with socket, is very tired and socket is extracted from bellmouthDifficult, conventional method is with oxy-acetylene, O-ring seal to be burnt, the rubber exhaust gas volumn of burning in pipeline is very large, more than DN2000The time that large-diameter pipe is burnt cushion rubber needs 3～4 hours, the non-constant of operating environment.
K type interface, comprises socket, bellmouth, O-ring seal, differential and bolt, between socket and bellmouth, passes through fluid sealantCircle is fixedly connected with, and O-ring seal is arranged in the end part seal chamber of bellmouth, bolt be arranged on the end flange of bellmouth and differential itBetween, the effect of pressured orchid makes O-ring seal produce contact and forms sealing. Application number is the invention of CN201310203245.XWhat disclosed " a kind of ductile iron pipe interface snap ring anchor structure, " adopted is exactly K type interface, and this application for a patent for invention is disclosedTechnical scheme comprises ductile iron pipe socket, spheroidal graphite cast-iron tube faucet, sealing ring, sealing differential and fastening bolt pair, sealing ringBe arranged in the end part seal chamber of spheroidal graphite cast-iron tube faucet, the end flange that fastening bolt pair is arranged on spheroidal graphite cast-iron tube faucet withBetween sealing differential, the right side, end part seal chamber of spheroidal graphite cast-iron tube faucet is provided with slotted collar mounting groove, ductile iron pipe socketEnd is with annulus boss, and ductile iron pipe socket is inserted in one end of spheroidal graphite cast-iron tube faucet, in slotted collar mounting grooveBe provided with slotted collar, described slotted collar circumference uniform distribution is provided with 3 above block rubbers, and this present invention utilizes ductile iron pipeInside water pressure is resisted in the interaction of the slotted collar of bellmouth inside and ductile iron pipe socket end annulus boss portion interdigitThe axial force producing, is convenient to pipeline construction. K type interface is that the effect of pressured orchid makes O-ring seal generation contact form closeEnvelope, owing to adopting differential and bolt hold down gag, contact can free adjustment, under the constraint of differential and bolt, bellmouthBe far smaller than T-shaped interface with the probability of socket distortion, therefore interface is safer. But K type interface needs multiplex than T-shaped interfaceDifferential and bolt, taking DN1600K type interface as example, differential weight 123Kg, 1 interface need overlap with screw bolt and nut 30, every cover weightMeasure about 1.5Kg × 30 cover ≈ 45Kg, each K type interface is than T-shaped many consumptive materials of interface 168Kg. In addition, aspect construction, generalDuctile iron pipe full-length is 6 meters or 8.15 meters, and every kilometer of pipeline has 167 or 123 interfaces, under normal circumstances, installs 1Approximately 1～1.5 hour individual T-shaped mouthpiece used time, and install 1 K type or flange-interface when effective at 4～6 hours, be T-shaped interfaceInstall consuming time 4 times. In addition, volume of earthwork K type and flange-interface are than T-shaped interface large 1/5. Because fastening cast tube bottomBolt resists for convenient construction action need digs work, and T-shaped interface does not need bolt to connect, and adopts Ping Gou bottom surface. FromAbove-mentioned comparative analysis is not difficult to find out, the economy of T-shaped interface is better than K type interface.
Flange-interface comprises end face flange, bolt and seal gasket, is traditional rigid interface, does not have flexible spyPoint is generally connected with water pump valve in pipeline, and interface does not exist problem on deformation.
Be not difficult to find out T-shaped interface, K type interface and 3 kinds of interface shape bell sockets of flange-interface wind that leaks from above-mentioned analysisDanger is maximum, and this is because jack design is the weakest, therefore, has the support of safe enough very necessary in jack design. Spheroidal graphite castingIron pipe line is pressure line, and general work pressure is at 0.6～0.8Mpa, and construction test pressure is 1.0～2.0Mpa, at this pressureLower maintenance 1～6 hour, it is qualified that force value keeps homeostasis to be. Therefore interface seepage or leakage all cannot keep force value homeostasis,Pipeline is checked and accepted defective. The reason that interface leaks is many-sided, is roughly divided into 3 aspects: the one, and tubing manufacture view formerCause: show as bellmouth and socket dimension overproof, sealed working face defectiveness has continuous rill along axis direction as sealed working face,Local gross distortion, larger area slag inclusion, loose etc.; The 2nd, the reason of construction aspect: when installation due to lubricated or operation notWhen, cause O-ring seal fracture or knock over; The 3rd, because being out of shape under external force, tubing causes leaking. Above-mentioned reason all likelyCause socket distortion, cause interface to leak. Especially, the socket radial strength of T-shaped interface is low, easily produces ellipse under external force loadCircle distortion, the larger sealing joint risk of caliber is larger, so, be greater than the above specification pipeline of DN1600 and do not adopt T-shaped interface; In fortuneDefeated stacking aspect, cast tube and pipe fitting in order to prevent socket ovalizing deflection, generally need to adopt and are inserting in long-distance transportation processMouth end is played the method protection socket of brace. Because can damage the cement mortar lining of inwall after the oval gross distortion of socket, makeCement mortar lining crackle or come off, and oval socket can not normal mounting, need to carry out on-site school circle to process, not onlyTime-consuming, and liner is also had to damage in various degree.
Application number be CN201210283662.5 disclosure of the invention a kind of external wrapping concrete ductile iron pipe, relate to socket jointFormula ductile iron pipe technical field; Comprise spigot-and-socket spheroidal graphite cast-iron tube body, its two ends are bellmouth and socket; Described spigot-and-socket ballOn graphite cast iron pipe body outer wall, be coated with the concrete layer that makes its elongated diameter identical, in described concrete layer, accompany cylinder-shaped steelMuscle net, described socket outer end is provided with adpting flange group, and outside, described bellmouth end is provided with annular boss, annular boss external diameter and instituteThe external diameter of stating concrete layer is identical; Its advantage is: coated concrete layer on spigot-and-socket spheroidal graphite cast-iron tube body outer wall, guaranteeTwo ends diameter is identical, is convenient to jacking construction, shortens construction period, reduces engineering cost, and outer field concrete can be protected simultaneouslySpigot-and-socket spheroidal graphite cast-iron tube body, increases the service life; In the spigot-and-socket ductile iron pipe socket one end that is coated with concrete layerFlange and gusset are set, in jack-in process as load end, convenient construction. But, this disclosure of the invention be coated with coagulationSpigot-and-socket ductile iron pipe socket one end of soil layer arranges flange and designs for push pipe is special, and in jack-in process, conduct is heldPower end, the axial thrust of refinforced cement layer in push pipe process, prevents the breakage of outer wall cement sand bed, convenient construction, so shouldInvention, in the spigot-and-socket ductile iron pipe socket one end that is coated with concrete layer, flange is set and gusset is a kind of flange group, described inFlange group comprises the first flange and is located at least four the first muscle on the first flange and spigot-and-socket spheroidal graphite cast-iron tube body outer wallPlate; Described the first gusset is evenly arranged radially around spigot-and-socket ductile iron pipe body axis, described spigot-and-socket spheroidal graphite cast-ironOn tube body outer wall, be also provided with collar stop, when use collar stop with described the first gusset end to contacting, the first gusset andFlange and collar stop coordinate as the load end in jack-in process, with convenient construction, prevent from destroying in jack-in process pipe end.So, this invention complex structure, and the flange group that comprises flange and gusset arranging in ductile iron pipe socket one end is to pass throughWelded, globality is poor, and intensity is lower, due to flange carrying axial load, so designed multiple tracks flange, gusset and gearRing, and effect is only the axial thrust of refinforced cement layer in push pipe process, prevents the breakage of outer wall cement sand bed, is a kind ofBe only applicable to the special technology of centrifugal ductile cast iron pipes push pipe.
In addition, hydraulic engineering Long-distance Water Transmission Pipeline adopts PCCP pipe (Prestressed concrete cylinder pipe), specification more at presentFor DN1400～DN4000, supporting pipe fitting adopts steel welding pipe fitting mostly with it. Due to the corrosion-resistant of steel pipe fittings,Within general 5～10 years, just need to change, safeguard. Change and safeguard that the expense of pipe fitting is very high, the social concern of simultaneously bringingThat pipeline can cause large area to be cut off the water in the maintenance period. And the corrosion resistant performance of nodular cast iron pipe fittings is far away higher than steel welding pipePart, reach more than 70 years the service life of nodular cast iron pipe fittings, is better than the service life of steel welding pipe fitting, so cast with spheroidal graphiteIt is the developing direction of hydraulic engineering pipeline from now on that iron pipe part substitutes welding steel pipe fittings. But PCCP pipe flexible interface external diameter is ellipseCircle tolerance tolerance is 0.5mm, and the nodular cast iron pipe fittings of the prior art world and national standard allow the oval tolerance of external diameter to beThe 2%(DE that is less than DE is socket external diameter), be therefore difficult to support the use with PCCP pipe.
Summary of the invention
Technical problem to be solved by this invention is to overcome inserting that in prior art, T-shaped interface nodular cast iron pipe fittings existsMouth radial strength is low, easily produces the problem of ovalizing deflection under external force load, by designing socket flange at tube spigot end, andBlock cast is shaped, and improves socket radial strength, prevents that socket from leaking because radial deformation causes interface, makes T-shaped interface have K type interfaceWith the intensity of flange-interface, the construction advantage that keeps again T-shaped interface bellmouth to be connected with socket, and do not need in long-distance transportationSpecial protection, convenient, the interface shape simultaneously T-shaped interface socket joint being connected expands to DN4000 by DN1600, solve withPCCP manages matching used technical problem.
The technical solution used in the present invention comprises socket and bellmouth, is provided with socket flange on socket, described socket flangeBe integrated with socket block cast, on socket flange, be evenly equipped with tapped through hole, the nominal diameter of described socket is 1400～4000mm.
Described socket flange is 317～403mm from the distance L of socket end face.
Described socket flange is arranged on the socket of bend pipe tools, and described socket flange and bend pipe tools block cast are integrated,The nominal diameter of described socket is 1400～2600mm.
Described socket flange is arranged on the socket of T-shaped interface pipe fitting, and described socket flange and the block cast of T-shaped interface pipe fitting areOne.
Described socket flange is arranged on the socket of PCCP interface tube pipe fitting, described socket flange and PCCP interface tube pipe fittingBlock cast is integrated, and described socket flange is 108～150mm from the distance L of socket end face.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention is owing to increasing socket flange at T-shaped interface nodular cast iron pipe fittings socket end, and block cast is shaped, and improved T-shapedThe radial strength of interface socket and rigidity, prevent that T-shaped interface socket from leaking because radial deformation causes interface, makes T-shaped interface have KThe intensity of type interface and flange-interface, the construction advantage that has kept again T-shaped interface bellmouth to be connected with socket, and stacking and lengthIn distance transport, do not need special protection, convenient, the interface shape that therefore T-shaped interface socket joint can be connected expands to DN1400～DN4000, and, because the present invention has improved the firm of T-shaped interface ductile iron tube spigot by increasing socket flangeDegree is not a problem oval external diameter allowance control in 0.5mm, so pass through PCCP interface tube pipe fitting ductile iron pipePart is applied on PCCP pipeline and becomes a reality, and the benefit of bringing is not only economic benefit, also has better social benefit.
(2) the present invention is owing to increasing after socket flange at T-shaped interface tube spigot end, the footpath of having improved T-shaped interface socketTo intensity, socket flange has played mutual supporting role in the time stacking transport, can save and use brace in transport and in stackingThe link supporting, ensures not produce ovalizing deflection in transit link; Also improved the rigidity of socket, made bell socket pipeline fortuneRow is safer, after T-shaped interface tube spigot increases socket flange, can effectively evade in pipeline transportation construction and runningPotential risk, reduce the sealing joint bringing because of socket ovalizing deflection and lost efficacy, the consequence that causes pipeline normally not use.
(3) the present invention is owing to increasing after socket flange at T-shaped interface tube spigot, and the work of changing O-ring seal becomes phaseTo simply, machining screw through hole on socket flange in advance, caliber difference, the aperture of tapped through hole and quantity are also different, caliberThe aperture of larger tapped through hole is larger, and quantity is also more, otherwise few. The process that bellmouth is separated with socket is to utilize socketTapped through hole on flange, withstands bellmouth outer face by disengagement bolts, and rotating separation bolt can be extracted socket.
(4) technical scheme of the present invention can be applicable to bend pipe tools, T shape interface pipe fitting, PCCP interface tube pipe fitting and centrifugalDuctile iron pipe aspect, provides technology to prop up to avoiding pipe and pipe fitting ovalizing deflection, reduce material cost and accelerating speed of applicationSupport.
Brief description of the drawings
Fig. 1 is the T-shaped interface structure schematic diagram of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is bend pipe tools schematic diagram of the present invention;
Fig. 4 is the T-shaped interface pipe fitting of the present invention schematic diagram;
Fig. 5 is PCCP interface tube pipe fitting schematic diagram of the present invention;
Fig. 6 is that the present invention stacks when transport and stacks schematic diagram;
Fig. 7 is that the present invention uses disengagement bolts released state schematic diagram.
In figure:
1. socket, 2. O-ring seal,
3. bellmouth, 4. socket flange,
5. tapped through hole, 6. cement mortar lining,
7. bend pipe tools, 8.T type interface pipe fitting,
9.PCCP interface tube pipe fitting,
10. socket groove,
11. disengagement bolts.
Detailed description of the invention
Detailed description of the invention 1
As depicted in figs. 1 and 2, the T-shaped interface block cast of heavy caliber of the present invention nodular cast iron pipe fittings comprises socket 1 and bellmouth 3, at socket1 and the inwall of bellmouth 3 be provided with cement mortar lining 6, on socket 1, be provided with socket flange 4, described socket flange 4 is whole with socket 1Be cast as one, thereby improved radial strength and the rigidity of socket 1, it is to pass through that described socket flange 4 is integrated with socket 1 block castEvaporative pattern technique or the monoblock cast of resin sand technique complete, and wherein lost foam casting is by the bubble identical with casting dimension shapeThe bonding model cluster of forming of foam model, after brush fireproof coating oven dry, is embedded in vibration molding in dry sand, under negative pressure of vacuum, pours into a mould,Make model gasification, liquid metals occupies modal position, solidifies cooling rear formation foundry goods, when use between socket 1 and bellmouth 3O-ring seal 2 is installed, and the nominal diameter of described socket 1 is 1400～4000mm, and socket flange 4 from the distance L of socket 1 end face is317～403mm, in the time that nominal diameter is 1400～1800mm, L is 317～323mm, when nominal diameter be 2000mm～When 2200mm, L is 357～363mm, and in the time that nominal diameter is 2600mm～4000mm, L is 397～403mm; In socket methodOn blue 4, being evenly equipped with tapped through hole 5, is unthreaded hole when through hole block cast on socket flange 4, is processed as screw thread logical after the water pressure testHole 5, on socket flange 4, the tapped through hole 5 of processing is according to caliber difference in advance, and the aperture of tapped through hole 5 and quantity are also different,The aperture of the tapped through hole 5 that caliber is larger is larger, and quantity is also more, otherwise few.
Detailed description of the invention 2
As shown in Figure 3, identical with detailed description of the invention 1, difference is, socket flange 4 is arranged on the socket 1 of bend pipe tools 7,Described socket flange 4 is integrated with bend pipe tools 7 block casts, and the nominal diameter of described socket 1 is 1400～2600mm.
Detailed description of the invention 3
As shown in Figure 4, identical with detailed description of the invention 1, difference is, socket flange 4 is arranged on the socket 1 of T-shaped interface pipe fitting 8Upper, described socket flange 4 is integrated with T-shaped interface pipe fitting 8 block casts.
Detailed description of the invention 4
As shown in Figure 5, identical with detailed description of the invention 1, difference is, socket flange 4 is arranged on inserting of PCCP interface tube pipe fitting 9On mouth 1, described socket flange 4 is integrated with 9 block casts of PCCP interface tube pipe fitting, and described socket flange 4 is from the distance of socket 1 end faceL is 108～150mm, is also provided with the socket groove 10 for sealing ring is installed on socket 1.
As shown in Figure 6, stack when transport, the present invention is owing to being provided with socket flange 4 on socket 1, described socket flange 4 withSocket 1 block cast is integrated, and has improved radial strength and the rigidity of socket, and socket flange 4 has played mutually and propped up in the time stacking transportSupport effect does not need special protection in stacking and long-distance transportation, can effectively evade in pipeline transportation construction and runningPotential risk, reduce the sealing joint bringing because of socket ovalizing deflection and lost efficacy, avoid producing after pipeline can not normally useReally.
As shown in Figure 7, the effect of tapped through hole 5 is not for connecting, but for dismounting, socket 1 is separated with bellmouth 3Time, separation process is the tapped through hole 5 that utilizes on socket 1 the socket flange 4 arranging, with disengagement bolts 11 withstand bellmouth 3 outsideEnd face, rotating separation bolt 11 can be extracted socket 1.
Claims (5)
1. the T-shaped interface block cast of heavy caliber nodular cast iron pipe fittings, comprises socket (1) and bellmouth (3), it is characterized in that, in socket (1)Be provided with socket flange (4), described socket flange (4) is integrated with socket (1) block cast, on socket flange (4), is evenly equipped with spiral shellLine through hole (5), the nominal diameter of described socket (1) is 1400～4000mm.
2. the T-shaped interface block cast of heavy caliber nodular cast iron pipe fittings according to claim 1, is characterized in that described socket flange(4) be 317～403mm from the distance L of socket (1) end face.
3. according to the T-shaped interface block cast of heavy caliber described in claim 1 or 2 nodular cast iron pipe fittings, it is characterized in that described socket methodBlue (4) are arranged on the socket (1) of bend pipe tools (7), and described socket flange (4) is integrated with bend pipe tools (7) block cast, described inThe nominal diameter of socket (1) is 1400～2600mm.
4. according to the T-shaped interface block cast of heavy caliber described in claim 1 or 2 nodular cast iron pipe fittings, it is characterized in that described socket methodBlue (4) are arranged on the socket (1) of T-shaped interface pipe fitting (8), and described socket flange (4) is one with T-shaped interface pipe fitting (8) block castBody.
5. the T-shaped interface block cast of heavy caliber nodular cast iron pipe fittings according to claim 1, is characterized in that described socket flange(4) be arranged on the socket (1) of PCCP interface tube pipe fitting (9) described socket flange (4) and PCCP interface tube pipe fitting (9) block castBe integrated, described socket flange (4) is 108～150mm from the distance L of socket (1) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193664.3A CN105605351A (en) | 2016-03-31 | 2016-03-31 | Large-caliber T-shaped-port block-cast nodular cast iron pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610193664.3A CN105605351A (en) | 2016-03-31 | 2016-03-31 | Large-caliber T-shaped-port block-cast nodular cast iron pipe fitting |
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| CN105605351A true CN105605351A (en) | 2016-05-25 |
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| CN201610193664.3A Pending CN105605351A (en) | 2016-03-31 | 2016-03-31 | Large-caliber T-shaped-port block-cast nodular cast iron pipe fitting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019201180A1 (en) * | 2018-04-20 | 2019-10-24 | 广东北晟益通实业有限公司 | Spheroidal graphite cast iron pipe for petroleum pipeline, preparation process and application thereof |
| CN110901033A (en) * | 2019-11-15 | 2020-03-24 | 广东雄塑科技集团股份有限公司 | Core layer foaming thermoplastic plastic pipe interface processing method and product |
| CN112595122A (en) * | 2020-12-25 | 2021-04-02 | 中化二建集团有限公司 | Casting construction method for flexible air pipeline lining |
| CN115199833A (en) * | 2022-07-29 | 2022-10-18 | 德庆奥新宇联合管道有限公司 | Pipe for long-distance natural gas pipeline, preparation process and installation method of long-distance natural gas pipeline |
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| JPH07332556A (en) * | 1994-06-10 | 1995-12-22 | Kubota Corp | Separation preventing pipe joint |
| CN204083575U (en) * | 2014-06-13 | 2015-01-07 | 山西光华铸管有限公司 | New interface T-DN1600 centrifugal ductile cast iron pipes |
| CN104197119A (en) * | 2014-09-19 | 2014-12-10 | 新兴铸管股份有限公司 | Nodular cast iron pipe with composite anticorrosive coating and production method of nodular cast iron pipe |
| CN205479852U (en) * | 2016-03-31 | 2016-08-17 | 辽宁爱维尔铸业股份有限公司 | Heavy -calibre T type interface block cast nodular cast -iron pipe spare |
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