CN203628132U - Gas pipe compensation device for blast furnace - Google Patents

Abstract

The utility model discloses a gas pipe compensation device for a blast furnace. The gas pipe compensation device comprises an inner sleeve, an outer sleeve and a filling material sealing body arranged between the inner sleeve and the outer sleeve, wherein the inner sleeve and the outer sleeve are each composed of a basic pipe section. The inner sleeve further comprises a first auxiliary pipe fixed to the inner wall at one end of the basic pipe, and the outer sleeve further comprises a second auxiliary pipe arranged on the outer wall through a supporting ring. One end of the second auxiliary pipe of the outer sleeve is nested with one end of the first auxiliary pipe of the inner sleeve, and the filling material sealing body is arranged between the second auxiliary pipe and the outer wall of the basic pipe of the inner sleeve. An axial adjusting mechanism is arranged between the inner sleeve and the outer wall of the basic pipe of the outer sleeve. The filling material sealing body arranged between the inner sleeve and the outer sleeve effectively prevents pipe leakage due to stress concentration and gas corrosion, and the maintenance cost is reduced. The safety and service lifetime of the gas pipe of the blast furnace are improved.

Description

Blast furnace gas pipeline compensation device

Technical field

The utility model relates to blast furnace gas pipeline installation auxiliary device technical field, relates in particular to a kind of blast furnace gas pipeline compensation device.

Background technique

Compensation device is one of pipe network and equipment critical component of carrying out thermal compensation, the medium of carrying when pipeline or pipeline environment of living in are while having temperature variation, expanding with heat and contract with cold of being caused by temperature variation is inevitable, if do not take certain mode to compensate this dimensional changes, will produce very high stress at tube wall, reach fixed pipe support or equipment by pipeline, in the time that the temperature difference exceedes a certain scope, temperature difference stress is greater than the stress range that pipe can bear, easily cause pipe support to be pushed over, equipment is destroyed, at this moment just must consider that application compensator reaches the object of compensation.

In metallurgy industry is produced, industrial gas is recycled in a large number as good fuel, gas pipe line caliber is large, pipeline is long, operating cost is high, in order to ensure safe operation, compensator is used in a large number, the most of corrugated expansion joint that adopts of existing compensator is directly connected with pipeline two ends, actual operating mode shows, in coal gas, acid ingredient content is high, the a large amount of cl-1 that particularly contain in blast furnace gas, SOX etc. often can cause ripple place to occur perforation leakage phenomenon to the corrosive action of bellows stainless steel, directly impact is normal produces, and gas leakage, also can pollute surrounding environment, bring potential safety hazard to operator.

Model utility content

Technical problem to be solved in the utility model is to provide a kind of blast furnace gas pipeline compensation device, by packing seal body is combined with bellows, effectively prevent that blast furnace gas from corroding the hidden danger that causes gas leakage and affect normal production on bellows, the safety of guaranteeing operator, cuts operating costs.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of blast furnace gas pipeline compensation device, comprise inner sleeve, outer sleeve and be located at outer sleeve and inner sleeve between packing seal body, described inner sleeve and outer sleeve include a segment base plinth pipe, inner sleeve also comprises the first auxiliary tube being fixed on the inwall of pipe one end, basis, described outer sleeve also comprises by means of support ring is located at the second auxiliary tube on outer sleeve outer wall, described outer sleeve is provided with one end that one end of the second auxiliary tube and inner sleeve be provided with the first auxiliary tube and is nested, between the basic pipe outer wall of described the second auxiliary tube and inner sleeve, be provided with packing seal body, between the basic pipe outer wall of described inner sleeve and outer sleeve, be also provided with mechanism for axial adjusting.

Described packing seal body comprises the two seals baffle ring of being located on the second auxiliary tube inwall and is located at the seal ring of two seals baffle ring inner side, the basic pipeline section outer wall of described two seals ring, the second auxiliary sleeve inner tube wall and inner sleeve forms sealing ring cavity, in described sealing ring cavity, be provided with filler, the described second auxiliary sleeve pipe sidewall is provided with at least two filling pipes that are communicated with annular seal cavity.

Described filling pipe arranges three, and three filling pipes are evenly arranged around inner sleeve axis.

Described mechanism for axial adjusting comprise two be located at respectively ring-type gusset on inner sleeve and outer sleeve outer wall and two ends respectively with at least two guide rods of two ring-type link of boards, described guide rod one end is fixedly connected with the ring-type gusset of being located on outer sleeve outer wall, its other one end is through the ring-type gusset of being located on inner sleeve outer wall, and the supporting nut that arranges in ring-type gusset both sides arranging on inner sleeve outer wall.

On described inner sleeve and outer sleeve open end outer wall, be equipped with ring-type end plate, the ring-type end plate arranging on described inner sleeve outer wall is provided with the adjusting hole of axis and three guide rod deads in line, and described filling pipe free end is all through the ring-type end plate setting of being located on outer sleeve outer wall.

Between the ring-type end plate arranging on the ring-type end plate arranging on described inner sleeve outer wall and outer sleeve outer wall, bellows is set.

The beneficial effect that adopts technique scheme to produce is: by packing seal body is set between inner sleeve and outer sleeve, when in use directly by basic pipe free end and the pipeline welding of inner sleeve and outer sleeve, packing seal body can be guaranteed between inner sleeve and outer sleeve to produce axially or sealing when other direction relative displacements, bellows can guarantee between inner sleeve and outer sleeve, to have certain elasticity, effectively prevent that stress from concentrating and gas attack causes the generation of pipeline leakage event, reduce maintenance cost, improve Security and the working life of blast furnace gas pipeline.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

In the accompanying drawings: 1, inner sleeve; 2, outer sleeve; 3, filling pipe; 4, bellows; 5, gusset; 6, guide rod; 7, adjusting hole; 8, end plate; 9, nut; 10, seal stopper ring; 11, seal ring; 12, filler.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Pipeline compensator is a kind of common for guaranteeing that pipeline is at the abnormal not damaged a kind of parts of stressing conditions underground pipelines, its Main Function has the following aspects, compensation extraction duct is axial, horizontal, angle thermal distortion extending amount, facilitate the installation and removal absorption equipment vibration of valve pipe, reduce vibration equipment the impact of pipeline is absorbed to earthquake, the amount of deformation of earth subsidence to pipeline, conventional have several large classes such as metal corrugation compensator, non-metal compensator, sleeve expansion joint, and metal corrugation compensator is the most common.

Gas pipe line caliber is large; pipeline is long; operating cost is high; in order to ensure safe operation; compensator is used in a large number; the most of metal corrugation compensator that adopts of existing compensator is directly connected with pipeline two ends; actual operating mode shows; in coal gas, acid ingredient content is high; a large amount of cl-1, the SOX etc. that particularly contain in blast furnace gas often can cause ripple place to occur perforation leakage phenomenon to the corrosive action of bellows stainless steel, and directly impact is normal produces, and gas leakage; also can pollute surrounding environment, bring potential safety hazard to operator.

Can not adapt to the problem of blast furnace gas pipeline for solving existing metal corrugated expension joint, the utility model discloses a kind of blast furnace gas pipeline compensation device as shown in Figure 1, comprise inner sleeve 1, outer sleeve 2 and be located at outer sleeve 2 and inner sleeve 1 between packing seal body, described inner sleeve 1 and outer sleeve 2 include a segment base plinth pipe, basis two free ends of pipe are for being connected with existing pipeline, its caliber is identical with existing pipeline caliber, inner sleeve 1 also comprises the first auxiliary tube being fixed on the inwall of pipe one end, basis, described outer sleeve 2 also comprises by means of support ring is located at the second auxiliary tube on outer sleeve 2 outer walls, described outer sleeve 2 is provided with one end that one end of the second auxiliary tube and inner sleeve 1 be provided with the first auxiliary tube and is nested, the first auxiliary tube and the second auxiliary tube can make to form bell and spigot frame between inner sleeve and outer sleeve, the diameter of the first outer sleeve can be slightly less than the diameter of basic pipe, between its outer wall and basic bore, can weld by means of gasket ring, the second auxiliary tube caliber is larger than basic pipe caliber, can be by means of support ring and basis pipe welding, between the basic pipe outer wall of described the second auxiliary tube and inner sleeve 1, be provided with packing seal body, described packing seal body comprises the two seals baffle ring 10 of being located on the second auxiliary tube inwall and the seal ring 11 of being located at two seals baffle ring 10 inner sides, the effect of seal stopper ring is fixing two seals ring, between the basic pipe outer wall of two seals ring and the second auxiliary tube and inner sleeve, form seal chamber, described two seals ring 11, the basic pipeline section outer wall of the second auxiliary sleeve inner tube wall and inner sleeve 1 forms seal ring 11 shape cavitys, in described seal ring 11 shape cavitys, be provided with filler 12(as soft packing CMS2000), the described second auxiliary sleeve pipe sidewall is provided with at least two filling pipes 3 that are communicated with annular seal cavity, filling pipe 3 arranges three, three filling pipes 3 are evenly arranged around inner sleeve 1 axis, after the effect of filling pipe is this device to be connected with existing pipeline, filling stuffing in annular seal cavity, between the basic pipe outer wall of inner sleeve 1 and outer sleeve 2, be also provided with mechanism for axial adjusting, the effect of mechanism for axial adjusting is to adjust in advance length and the pressure of compensator, mechanism for axial adjusting comprises that two are located at respectively at least two guide rods 6 that inner sleeve 1 and ring-type gusset 5 on outer sleeve 2 outer walls and two ends are connected with two ring-type gussets 5 respectively, described guide rod 6 one end are fixedly connected with the ring-type gusset 5 of being located on outer sleeve 2 outer walls, its other one end is through the ring-type gusset 5 of being located on inner sleeve 1 outer wall, and the supporting nut 9 that arranges in ring-type gusset 5 both sides that arrange on inner sleeve 1 outer wall.

On described inner sleeve 1 and outer sleeve 2 open end outer walls, be equipped with ring-type end plate 8, the ring-type end plate 8 arranging on described inner sleeve 1 outer wall is provided with the adjusting hole 7 of axis and three guide rod 6 deads in line, described filling pipe 3 free ends all arrange through the ring-type end plate 8 of being located on outer sleeve 2 outer walls, between the ring-type end plate 8 arranging on the ring-type end plate 8 arranging on described inner sleeve 1 outer wall and outer sleeve 2 outer walls, bellows 4 is set, the object that bellows is set is to give full play to metal bellows and adapts to pipeline axial displacement and angular displacement, guarantee that packing seal body does not expose simultaneously, increase the service life.

In a word, in the time that pipe network is subject to environment or self temperature variation expansion/contraction, inner sleeve is moving axially, and bellows stretching/compressing is realized the object of compensate for dilatation amount.Because there is packing seal body that coal gas and bellows are separated between internal and external casing, the corrosion composition that can stop in coal gas directly contacts bellows and produces corrosion, the sheet metal thickness of bellows can attenuate, internal and external casing is axially movable, the anticorrosive coat difficult drop-off that it is surperficial, can effectively completely cut off gas corrosion sleeve pipe, be reserved in the regularly filling stuffing of filling pipe of endplate outside, increase the service life, the utility model is simple in structure, cost is low, easy for installation, fault point is few, easy care, long service life.

Claims (6)

1. a blast furnace gas pipeline compensation device, it is characterized in that: comprise inner sleeve (1), outer sleeve (2) and be located at outer sleeve (2) and inner sleeve (1) between packing seal body, described inner sleeve (1) and outer sleeve (2) include a segment base plinth pipe, inner sleeve (1) also comprises the first auxiliary tube being fixed on the inwall of pipe one end, basis, described outer sleeve (2) also comprises by means of support ring is located at the second auxiliary tube on outer sleeve (2) outer wall, described outer sleeve (2) is provided with one end that one end of the second auxiliary tube and inner sleeve (1) be provided with the first auxiliary tube and is nested, between described the second auxiliary tube and the basic pipe outer wall of inner sleeve (1), be provided with packing seal body, between described inner sleeve (1) and the basic pipe outer wall of outer sleeve (2), be also provided with mechanism for axial adjusting.

2. blast furnace gas pipeline compensation device according to claim 1, it is characterized in that: described packing seal body comprises the two seals baffle ring (10) of being located on the second auxiliary tube inwall and is located at the seal ring (11) of two seals baffle ring (10) inner side, described two seals ring (11), the basic pipeline section outer wall of the second auxiliary sleeve inner tube wall and inner sleeve (1) forms seal ring (11) shape cavity, in described seal ring (11) shape cavity, be provided with filler (12), the described second auxiliary sleeve pipe sidewall is provided with at least two filling pipes (3) that are communicated with annular seal cavity.

3. blast furnace gas pipeline compensation device according to claim 2, is characterized in that: described filling pipe (3) arranges three, and three filling pipes (3) are evenly arranged around inner sleeve (1) axis.

4. blast furnace gas pipeline compensation device according to claim 1, it is characterized in that: described mechanism for axial adjusting comprises that two are located at respectively at least two guide rods (6) that inner sleeve (1) and ring-type gusset (5) on outer sleeve (2) outer wall and two ends are connected with two ring-type gussets (5) respectively, described guide rod (6) one end is fixedly connected with the ring-type gusset (5) of being located on outer sleeve (2) outer wall, its other one end is through the ring-type gusset (5) of being located on inner sleeve (1) outer wall, and the supporting nut (9) that arranges in ring-type gusset (5) both sides that arrange on inner sleeve (1) outer wall.

5. blast furnace gas pipeline compensation device according to claim 4, it is characterized in that: on described inner sleeve (1) and outer sleeve (2) open end outer wall, be equipped with ring-type end plate (8), the ring-type end plate (8) arranging on described inner sleeve (1) outer wall is provided with the adjusting hole (7) of axis and three guide rods (6) dead in line, and described filling pipe (3) free end all arranges through the ring-type end plate (8) of being located on outer sleeve (2) outer wall.

6. blast furnace gas pipeline compensation device according to claim 5, is characterized in that: between the ring-type end plate (8) arranging on the ring-type end plate (8) arranging on described inner sleeve (1) outer wall and outer sleeve (2) outer wall, bellows (4) is set.

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