CN101520117A

CN101520117A - Huge pipe quick joint

Info

Publication number: CN101520117A
Application number: CN200910097520A
Authority: CN
Inventors: 黄金伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-04
Filing date: 2009-04-04
Publication date: 2009-09-02

Abstract

A huge pipe quick joint is suitable for the quick connection between steel pipes with the inner diameter of about 1.6 m. A rotating sleeve (1) is firstly provided with a bridge washer (2) in advance, and the bridge washer is welded at the A pipe end so as to lead the rotating sleeve to freely rotate without pulling-out. The B pipe end is welded with a tooth band (3); a packing gasket is lined between an A pipe and a B pipe when the A pipe and the B pipe are connected, as long as the rotating sleeve is screwed on the tooth band at the B pipe end, the connection can be quickly completed. The invention changes the connection mode that the steel pipes with 1.6 m of pipe diameter specified in Guo Biao are connected by flanges and 40 pairs of big bolts; the steel pipes are buried in a trench by meters deep, people can install the big bolts under the steel pipe belly, however, the invention saves the earthwork man-hour because people can stand on a gang board on the pipe trench to pull the rotating sleeve for screwing so as to realize the connection, and improves the power effect by more than 40 times only on the screwing mode.

Description

Huge pipe quick joint

Technical field:

The invention belongs to the pipe coupling mechanical field.

Background technique:

Tens thousand of mus, tens thousand of mu of tidal lands surround, and the longest Construction of Hangzhou Bay Cross-sea Bridge in the world connects now, and private enterprise's prosperity and foreign capitals gather, and a large amount of landlocked edge labourers are dissolved in, and form the old and new's Cixi people harmony and create development.Institution of higher learning, professional technical school, science, industry and trade, agricultural travelling merchants swim in great-leap-forward development, and water resources highlights a difficult problem.

Everybody reform and opening-up, particularly new century leading of feeling grateful in innovative state basic policy.The current new Cixi that has become the important transport node of Ningbo City Beijing University door, the Yangtze River Delta for satisfying good water sources, is crossed over the area, is crossed over great river, Cao Ejiang and important mountain Ling, to the soup Pu in area, Shaoxing reservoir diversion success.

The crucial large pipeline of diversion, the steel pipe that the handy Φ in many places is 1.6 meters is connected with flange, bolt.

The coastal area sends someone one after another to use for reference that Cixi is protected national agricultural land, the exhibition of discovering for the first time of reclaiming fields from the sea inside and outside the province, so diversion also is crucial.The 40 secondary king-bolts of (during nominal pressure 0.6 MPa) handy M30 on the every secondary flange of 1.6 meters steel pipes of GB Φ, if during nominal pressure 1 MPa, 40 secondary king-bolts with regard to handy M48, therefore not only flange outer diameter is big, install when connecting, in the time of manually must screwing number always very hinder in ten king-bolts under the zanjon of buried steel pipe bottom, steel pipe tripe, often handy drop shaft sinking prevents to cave in or seeps water too fast to safeguard workmen's safe construction of mounting flange bolt.

Summary of the invention

Goal of the invention

When connecting A and two big steel pipes of B, pivoted housing free to rotate is housed on the garden outside the A pipe end, the left end aperture of pivoted housing can screw in the outer tooth circle of B pipe end and come wedging to reach quick purpose of connecting.The sealing gasket of cross section is set between A, the B pipe both ends of the surface, guarantees that steel shaft is to the compensation of expanding with heat and contract with cold;

Be difficult to travel large scale hoisting machinery and heavy engineering car on the tidal land soil layer in soft newly enclosing, therefore the big steel pipe two ends of making tens of tons of weights, overlength in factory utilize pivoted housing and the Ya Quan that has burn-on respectively, mix stifle (also utilizing Quick Connect Kit) the shutoff mouth of pipe of interim shutoff (waterproof enters each section big steel pipe) usefulness for the time being, with the heavy engineering car transport to short distance road end the water channel limit, unload big steel pipe and float in the water, again big steel pipe is pulled to the ditch that the destination is installed along the ditch transportation by driving;

Tidal land, boiling water ditch straight stream nozzle (also being the hydraulic giant that fire-fighting is used) and floating suction head commonly used are enclosed in utilization, and with the ditch water flow mode by the gas-filling bag part shutoff big steel pipe side, lay down the stifle and then two pipes of temporary shutoff and finish quick connection.Hydraulic giant washes away and siphons away sewage and finishes simultaneously during connection, reaches the cleaning that connects sealing surface; Utilize factory's centralized management and big steel pipe rotary driving, high efficiency automatic welding on turning rolls; Overlength steel pipe land route short distance vehicle transport, long-range by the floating pipe haul in water route in the pipe laying ditch of planning in advance; Connect with huge pipe quick joint in the building site.Like this, estimation can be saved 3/5 times of manufacturing, construction, installation period, and saves 0.55 times of disbursement of payrolls is installed, (remarks: if huge pipe quick joint is the condition that replaces commercially available flange, the supply of material of professional manufactory is arranged in addition).

Technological scheme: Fig. 1 is welded with ring 2 at an end of A steel pipe (1.6 meters of interior caliber Φ), is adorning pivoted housing free to rotate 1 outside ring 2; One end of B steel pipe is welded with tooth circle 3.Therefore, when two big steel pipes of A and B are connected, aim at B steel pipe tooth circle 3 outer three uniform teeth with three breach on the pivoted housing 1 (central angle all is 60 °), each bar tooth is 3a, turn pivoted housing 1 just can be finished connection fast, also has three inwardly protruded fin 1a to mesh (please refer to Fig. 3) with the 3a of tooth circle 3 in the pivoted housing 1.

Illustrate: what Fig. 1 and Fig. 2 drew is according to state's marker tape neck steel flange form.Fig. 3 is transformed according to GB plate-type flange form, (simpler and easy, for selecting for use in the different operating modes).

Please see Figure 2 part 2 is according to GB: band neck steel flange shape done change, saved bolt hole, dwindled external diameter and be called the ring 2 of this programme, ring 2 is to weld Cast Steel, empty circular groove all is set on the inside and outside garden of ring 2, to alleviate deadweight, improve casting technology and cutting down the consumption of energy.At 20 on the ring 2 is to be illustrated in convex tendon uniform on the cervical vertebra face, can prevent that big steel pipe A from rotating (ring 2 is welded together with steel pipe A) with hook spanner during installation.Rotate on tooth circle 3 outer three the uniform tooth 3a that are tightened on the B pipe by pivoted housing 1 during installation, and pivoted housing 1 is free to rotate outside ring 2, scribble lubricating grease on the surface of contact, so steel pipe A just can not rotate in time more than 10 meters with length more than 1.6 meters at Φ when its aperture, it is very heavy to conduct oneself with dignity.The A pipe is duplicate steel pipe with the B pipe; The other end at the A pipe promptly is welded with tooth circle 3, is to distinguish for statement to say into the B pipe, can allow the pivoted housing 1 of A end of next root pipe screw connection, so the many spreadings constantly on length of the B pipe among Fig. 2.

Ring 2 and the tooth circle 3 of Fig. 3 all do not have cervical vertebra, come according to GB plate-type flange alteration of form, more succinct like this, make the external diameter of ring 2, tooth circle 3 more much smaller than the flange outer diameter of GB, the area that does not have king-bolt orifice ring shape outer ring again, steel pipe in 〉=1.6 meters apertures of Φ has surpassed the price of a cast steel pivoted housing 1 with 40 secondary king-bolt vice president valencys on its flange.

Fig. 2 can find out that the section of sealing gasket 4 is crosswise, its outstanding advantage has the two-way trapezoidal fin symmetric arrangement in the left and right sides at place, middle footpath, with leaking direction is to be horizontal blocking-up interception, make leak pressure run into precipice, trapezoidal fin has more wedging, tight effect, even just in case also have leak pressure potential energy, how curved " in closely knit, the long-distance slits, " can also consume leakage potential energy idle most in complications; Blocking-up is leaked so this sealing gasket except general seal action, has concurrently, the effect of butt joint location.

Advantage of the present invention compared with the prior art: 1. adapt to batch production and day and night make, shorten the manufacturing cycle, highlight the open-air long inefficient time of each section short steel pipes weldering of reduction; 2. remove the assembler enters several Mi Shen in the building site trench from, construction bolt and wind and rain, the day and night restriction of condition under huge steel pipe tripe; 3. the present invention installs: rotate pivoted housing 1, allow three breach (its central angle all is slightly larger than 60 °) on the pivoted housing aim at three tooth 3a of B pipe, screw and get final product, utilize the uniform blowhole of pivoted housing cylindrical, insert steel pipe (showing plate stem) with moment, the people stands on the springboard in the huge steel pipe sky, pull pivoted housing 1, realization A pipe is connected with the B pipe; 4. not only save geotechnique's man-hour, light also improves more than 40 times of effect in screwing the secondary contrast of pivoted housing and bolt.

Description of drawings

Fig. 1 is that the A pipe is connected stereogram (pivoted housing 1 cuts open the part with dashed lines, double dot dash line is represented) with the B pipe

Fig. 2 is that the A pipe is connected front view with the B pipe.

Fig. 3 is the stereogram of pivoted housing and B pipe.

Fig. 4 is the sectional drawing that ring 2 can be put into the design condition of pivoted housing 1.

Mode of execution

1. Fig. 1, pivoted housing 1, ring 2 and tooth circle 3 all are to weld Cast Steel, (annular) end face of ring 2 and the surface of contact of pivoted housing 1 slightly grind with plain grinding and just can; The Surface of action of 1a and 3a slightly grinds at profile grinding machine and gets final product, and allows to leave 25% the black scar of foundry goods, so in power consumption or all lower to operator's technical ability requirement.

2. Fig. 2 installs the left and right sides dovetail groove of sealing gasket 4, has cast in casting, so turner only need use the model tool setting, slightly light one cutter just completes; Because general turner all has the experience of processing triangle rubber tire, just all can the turning dovetail groove.

3. Fig. 3, three breach of pivoted housing 1 account for central angle θ, when the radius 900mm left and right sides, desirable θ=60.4 °; The desirable θ 1=59.6 of the shared central angle of 1a °; The value of these θ and θ 1 has belonged to bigger value for radius value when very big, also is to belong to the value of checking foundry goods, so need not as machining and check.

At every tooth on the B pipe is 3a (on tooth circle 3 uniform three 3a), and the shared central angle of each 3a also is 59.6 °, and purpose makes it enter three breach of pivoted housing 1 easily.

4. Fig. 4 is that expression designing requirement ring 2 can be put among the pivoted housing 1.Position shown in the dotted line represents that ring 2 puts into the initial position of pivoted housing 1, and fine line is represented the position that ring 2 has been put into and used; Quick-acting joint (comprises pivoted housing 1, ring 2, tooth circle 3 and sealing gasket 4) be to be combined into the whole series dispatch from the factory (with reference to figure 2), answer attached specification, be welded in big steel pipe A when end so adorning ring 2 when string in the pivoted housing 1, earlier tooth circle 3 is screwed out and unload, again at the casting hole of interior (or outside) circumference uniform distribution of pivoted housing 1, from the inner in hole outwards squeeze into temporarily three pieces of timbers (select three holes mutually between 120 ° beat firm three timbers), inner timber major part pushes against the end face of ring 2, temporarily fix ring and pivoted housing is integral, be convenient to rotary driving, automatically be welded in the A pipe end, forget the condition that pivoted housing must be housed earlier when also having prevented weldering.But: the pivoted housing 1 (with reference to figure 1, Fig. 2, Fig. 4) of still packing into after the ring 2 of hubbed flange formula is lived with steel pipe A weldering; And after the ring 2 of plate-type flange pattern and the steel pipe A weldering firmly, it is just difficult to reinstall pivoted housing 1.

Note: existing GB flange plate, sealing gasket, bolt pair are also all complete dispatches from the factory.

Claims

1, a kind of huge pipe quick joint comprises pivoted housing, ring, tooth circle and sealing gasket, and its feature pivoted housing can rotate outside ring, can not pull, and the interior fin of pivoted housing can mesh wedging with the tooth bar outside the tooth circle, reaches to connect two purposes that steel pipe is fastening; The section of the sealing gasket between ring and tooth circle is crosswise.

2, huge pipe quick joint according to claim 1, feature are uniform circular holes on the pivoted housing excircle, and the tommy bar patchhole during the double as rotation is used.

3, huge pipe quick joint according to claim 1, feature are that ring and tooth circle respectively have two kinds of patterns can replace the hubbed flange and the flat flange of GB respectively.

4, huge pipe quick joint according to claim 1, feature are that characteristics that the section of sealing gasket is the word shape possess and have more blocking-up beyond the general seal action and leak the butt joint positioning action.