CN202925044U - Pipeline tensioning device - Google Patents

Abstract

The utility model provides a pipeline tensioning device comprising fixed supports, sliding supports, pull rods on branch pipes and pull rods on a horizontal pipeline; each support is welded and fixed with a platform; two ends of the pull rods on the branch pipes are respectively connected with a hot blast furnace shell and the supports through pin shafts, wherein the supports are welded on the horizontal pipeline; and the pull rods on the horizontal pipe are respectively connected with the supports through connecting pieces. In order to tension a pipeline among a hot blast furnace, a mixing chamber and a compensator, the diameters and the lengths of pull rods on various pipelines are determined firstly through calculation and each support is welded and fixed with the platform; then, two ends of the pull rods on the branch pipes are respectively connected with the hot blast furnace shell and the supports through the pin shafts, wherein the support is welded on the horizontal pipeline; and finally, the pull rods on the horizontal pipeline are connected into a whole by using connecting pieces, and the whole connection, fixation and tension of the pipeline are realized through connection of the last group of pull rods and a nut group. The pipeline tensioning device has the advantages of effectively shortening the pipeline tensioning time and creating conditions for the next design work on the premise of ensuring design reliability.

Description

A kind of pipeline take-up device

Technical field

The utility model relates to metallurgical iron-smelting blast furnace hotblast stove field, particularly a kind of blast funnace hot blast stove pipeline take-up device.

Background technology

At present, the mode that most of hotblast stoves generally take segmentation tension and support, draw-bar seat to install respectively to the pipeline that contains loop expansion pipe, above two kinds of methods are more complicated all.This is because the segmentation tension causes the contraction of many pipelines and expansion to fail to be absorbed by loop expansion pipe; Simultaneously support and draw-bar seat are installed respectively, have namely increased the labile factor that workload has increased again box hat.

The utility model content

The utility model discloses a kind of pipeline take-up device, has solved long problem of design pipeline of hot air furnace take-up device time in the prior art.

The purpose of this utility model is to realize like this, it comprises stationary bearing, sliding support, a tubular tie, horizontal pipe pull bar, each bearing and platform welding are fixed, tubular tie two ends are connected by bearing pin and hot-air stove shell and the bearing that is welded on horizontal pipe respectively, and the pull bar on horizontal pipe is connected with each bearing by web member respectively.

It is the long draw that connects into by web member that concrete structure of the present utility model has the pull bar on horizontal pipe, except last group pull bar, the pull bar web member that other pull bars all comprise a round steel and weld together with it, on horizontal pipe, last group pull bar is to be connected with nut by screw thread;

I type sliding support: the centre is provided with watt formula resilient sleeper-bearing and a slide plate, and guarantees the top welding of its watt formula resilient sleeper-bearing, adds lubricating oil between bottom and slide plate;

II type sliding support: be provided with one slide-plate in the middle of bearing, up and down working face coating lubricating oil;

III type sliding support: be provided with one slide-plate in the middle of bearing, up and down working face coating lubricating oil, and establish two on top and be the pin shaft hole of connecting branch take-up device;

IV type sliding support: be placed on the horizontal pipe end, be provided with one slide-plate between bearing, up and down working face coating lubricating oil is at horizontal pipe circumference uniform distribution stiffening web.

Stationary bearing: bearing and pipeline welding, set up simultaneously two and be the pin shaft hole of connecting branch road take-up device.

First bearing is the front end that II type sliding support is arranged on horizontal pipe hotblast stove outlet mixing section, the III type is installed respectively in the both sides that small transfer line is connected with horizontal pipe is slided and stationary bearing, and the horizontal pipe end is provided with IV type sliding support.

Pull bar described in the utility model is the long draw that links into an integrated entity by web member: except last group pull bar, and the pull bar web member that other pull bars all comprise a round steel and weld together with it.On horizontal pipe, last group pull bar is to be connected with nut by screw thread.

The beneficial effects of the utility model are, by computer program calculative determination pull bar diameter; Select type and the position of sliding support and stationary bearing according to the deployment scenarios of loop expansion pipe; The characteristics of moving towards rapid Design according to pipeline.Under the prerequisite that guarantees reliable design, effectively shorten the time, be the condition created of carrying out of next step design effort.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is I type sliding support schematic diagram;

Fig. 3 is II type sliding support schematic diagram;

Fig. 4 is III type sliding support schematic diagram;

Fig. 5 is IV type sliding support schematic diagram;

Fig. 6 is the stationary bearing schematic diagram;

Fig. 7 is threaded pull bar schematic diagram.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail:

As shown in Figure 1, the utility model comprises the equipment such as stationary bearing 6, sliding support 3, sliding support 4, sliding support 5, a tubular tie 18, horizontal pipe 7 pull bars, and each bearing is all fixed with platform welding.

At first by calculative determination pull bar 7 diameters and length, sliding support and stationary bearing are all taked the mode that is welded and fixed with platform 11, because pipeline is subject to the pressure surge of γ-ray emission and the effect of blind plate power, so will prop up tubular tie 18 1 ends by bearing pin 13 and hotblast stove 1, the other end is connected with III type sliding support 4, stationary bearing 6, and the pull bar 7 on horizontal pipe 12 is the long draws that are connected.Except last group pull bar, the pull bar web member 16 that other group pull bars all comprise a round steel 17 and weld together with it; Last group pull bar is connected with the subassembly 8 that is comprised of sphere, taper faced washer, high strength nut by screw thread 18.The welding of at last all pull bars being connected is installed together, thereby realizes the tension of pipeline integral body.

I type sliding support 2 is installed at the arm middle part; First bearing is II type sliding support 3, is arranged on the front end of hotblast stove 1 outlet mixing section 9 on horizontal pipe 7; III type sliding support 4 and stationary bearing 6 are installed respectively in the both sides that arm is connected with horizontal pipe; For adjusting the pull bar overall length, the horizontal pipe end is provided with IV type sliding support 5; The pull bar 7 that to make at last is by the segmentation welded and installed.

The utility model pipeline compressing apparatus comprises 4,1 IV type sliding support 5 of 3,3 III type sliding supports of 2,1 II type sliding support of 3 I type sliding supports and 3 stationary bearings 6,14 groups of pull bars 7, (its transverse tube pull bar diameter is consistent with a tubular tie diameter).

The pull bar diameter

σ-material yield intensity (MPa),

F _{Blind plate power}=PNAe,

PN-pipeline peak pressure (kg.f/cm ²);

Ae-corrugated tube useful area (cm ²);

The corrugated tube useful area: $\mathrm{Ae}=\frac{\mathrm{\π}}{4}{\mathrm{Dm}}^2;......\left(2\right)$

The mean diameter of Dm-corrugated tube: Dm=(d+D)/2;

The D-outside diameter of bel, cm;

The internal diameter of d-corrugated tube, cm;

Safe sectional area $S=3\×\mathrm{\π}\×{\left(\frac{\mathrm{\φ}}{2}\right)}^2;......\left(3\right)$

The weld length of equivalence

∑ 1---weld seam total length, mm;

The computed altitude of a---fillet weld is got 0.7K (K is weld bead height);

τ _p---fillet weld shear-stress allowable;

---reduction coefficient (the high-altitude site weld 0.9 that execution conditions are relatively poor);

The permissible stress of m-electric-arc welding weld seam can multiply by Coefficient m and determine by the allowable tensile stress of mother metal.

Pull bar length=100 * pull bar diameter ... (5).

According to the diameter of horizontal pipe in above-mentioned formula calculating book utility model embodiment be

Length is about 26 meters, and the diameter of small transfer line is

Length is about 5 meters.

As shown in Figure 2, be provided with watt formula resilient sleeper-bearing 14 and slide plate 15 in the middle of I type sliding support 2 is characterized in, and guarantee its top welding, add lubricating oil between bottom and slide plate.Utilize a watt formula resilient sleeper-bearing 14 namely to absorb pipeline pressure, guaranteed again bearing slip planar.

As shown in Figure 3, be provided with one slide-plate 15 in the middle of II type sliding support 3 is characterized in, up and down working face coating lubricating oil realizes the slip of certain limit in the plane.

As shown in Figure 4, in the middle of being characterized in, III type sliding support 4 is provided with one slide-plate 15, up and down working face coating lubricating oil.Realize slip in the bearing plane by slide plate 15, set up simultaneously two and be the bearing pin 13 of connecting branch take-up device.

As shown in Figure 5, IV type 5 sliding supports are characterized in being placed on the horizontal pipe end, except the characteristics that have II type sliding support, at horizontal pipe circumference uniform distribution stiffening web 19.

As shown in Figure 6, stationary bearing 6 is characterized in bearing and pipeline welding, sets up simultaneously two and is the pin shaft hole 13 of connecting branch take-up device.

As shown in Figure 7, the characteristics of pull bar 7 are that interconnection by rod head 16, last tie rod end is done screw thread 18 so that joint nut's subassembly 8.

Claims (2)

1. pipeline take-up device, it is characterized in that, it comprises stationary bearing, sliding support, a tubular tie, horizontal pipe pull bar, each bearing and platform welding are fixed, tubular tie two ends are connected by bearing pin and hot-air stove shell and the bearing that is welded on horizontal pipe respectively, and the pull bar on horizontal pipe is connected with each bearing by web member respectively.

2. a kind of pipeline take-up device according to claim 1, is characterized in that,

Pull bar on horizontal pipe is the long draw that connects into by web member, except last group pull bar, and the pull bar web member that other pull bars all comprise a round steel and weld together with it, on horizontal pipe, last group pull bar is to be connected with nut by screw thread;

I type sliding support: the centre is provided with watt formula resilient sleeper-bearing and a slide plate, and guarantees the top welding of its watt formula resilient sleeper-bearing, adds lubricating oil between bottom and slide plate;

II type sliding support: be provided with one slide-plate in the middle of bearing, up and down working face coating lubricating oil;

III type sliding support: be provided with one slide-plate in the middle of bearing, up and down working face coating lubricating oil, and establish two on top and be the pin shaft hole of connecting branch take-up device;

IV type sliding support: be placed on the horizontal pipe end, be provided with one slide-plate between bearing, up and down working face coating lubricating oil is at horizontal pipe circumference uniform distribution stiffening web;

Stationary bearing: bearing and pipeline welding, set up simultaneously two and be the pin shaft hole of connecting branch road take-up device;

First bearing is the front end that II type sliding support is arranged on horizontal pipe hotblast stove outlet mixing section, the III type is installed respectively in the both sides that small transfer line is connected with horizontal pipe to slide and stationary bearing, the horizontal pipe end is provided with IV type sliding support, arm middle part installation I type sliding support.

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