CN201930784U

CN201930784U - Novel wavelike expansion lower connecting ring

Info

Publication number: CN201930784U
Application number: CN 201020696972
Authority: CN
Inventors: 王勇毅; 方烨; 吴柯芳
Original assignee: NINGBO MINGXIN CHEMICAL MACHINERY CO Ltd
Current assignee: NINGBO MINGXIN CHEMICAL MACHINERY CO Ltd
Priority date: 2010-12-24
Filing date: 2010-12-24
Publication date: 2011-08-17
Anticipated expiration: 2020-12-24

Abstract

The utility model discloses a novel wavelike expansion lower connecting ring. The lower connecting ring comprises a lower connecting ring body, wherein an upper end face of the lower connecting ring body is hermetically welded with an inner tank, and a lower end face of the lower connecting ring body is welded with a jacket; the lower connecting ring body is provided with an upper straight pipe section and a lower straight pipe section respectively; a radial outward convex wavelike cambered section is manufactured between the upper straight pipe section and the lower straight pipe section; the two ends of the wavelike cambered section are connected with the upper straight pipe section and the lower straight pipe section through smooth transition sections; and the wavelike cambered section is provided with deformation space which expands when heated and contracts when cooled. The lower connecting ring has the advantages that the structure is simple the cost is low, the processing is easy, the stress difference of the inner tank and the jacket can be eliminated through the flexible deformation space of the wavelike cambered section, a glass lining layer on a connecting ring part is protected, and the service life of equipment is prolonged.

Description

T-Ring under a kind of wave forms expands

Technical field

The utility model relates to glass-lined equipment, relates in particular to the technology that is tightly connected of interior jar with the chuck of glass-lined equipment, T-Ring under specifically a kind of wave forms expands.

Background technology

Glass-lined equipment generally is made up of tank body, cover, chuck and transmission, heat transfer and agitating device, technology adapter, valve etc., wherein tank body and cover inner surface are lined with the good glass-lined coating of acid-proof alkaline, be usually used in industries such as petrochemical industry, rubber, agricultural chemicals, dyestuff, medicine, in order to finishing technical process such as sulfonation, nitrated, hydrogenation, hydrocarbonylation, polymerization, condensation, and the consersion unit of many other technical process of organic dyestuff and intermediate.

Glass-lined coating is the glass that contains high silicon dioxide, and lining is attached to the metal surface at the inner surface of steel vessel securely through high temperature sintering, and the glass-lined equipment inner surface is played antisepsis.

Need owing to conduct heat, chuck usually adopts circular T-Ring to be connected with interior jar.Jar inner surface is coated with the glaze enamel firing in carrying out after T-Ring upper surface and the interior jar welding under it, behind the formation glass-lined coating, will descend T-Ring lower surface and chuck to be welded to connect the formation mezzanine space again.And when T-Ring and chuck are welded to connect down, again usually because the heat that welding produces, especially in use, because chuck and interior jar of factor such as heat transfer temperature difference, it is comparatively obvious to cause following T-Ring to expand with heat and contract with cold, thereby makes down T-Ring and the explosion of tank body welding assembly inner surface glass-lined coating, the burst porcelain of saying usually just, lost the acid-proof alkalization of glass-lined coating and learned corrosive nature, baslled iron is corroded the wall thickness attenuation, badly influences the safe operation of pressure vessel.In the prior art, be generally and reduce welding heat and cause down T-Ring expanded by heating, cooling is shunk, in limited height, will descend the design of T-Ring tube wall line to the longest as far as possible, have simultaneously certain intensity again and satisfy the ability that chuck bears interior pressure that supports, have two kinds on the common following T-Ring project organization: a kind of is T-Ring under bowl lid type, another kind is a T-Ring under the semicanal type, facts have proved that it is all not ideal enough, not only assembly precision requires high, and since flexible not enough, expanded by heating, when cooling was shunk, last T-Ring and interior jar of weld seam junction caused that very easily stress is concentrated, cause the glass-lined coating explosion, had a strong impact on the service life of product.

Summary of the invention

Technical problem to be solved in the utility model is at above-mentioned prior art present situation; provide have simple and convenient assembly, cost is low, easily processing and can eliminate interior jar and the chuck thermal stress poor; the glass-lined coating at protection T-Ring position, T-Ring under a kind of wave forms of prolongation service life of equipment expands.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: T-Ring under a kind of wave forms expands, comprise T-Ring body down, described T-Ring body upper surface down and interior jar of sealing welding mutually, its lower surface is welded with chuck, following T-Ring body is shaped on straight length and lower straighttube section respectively, and be shaped on the waveform arc section of projection radially outward between last straight length and the lower straighttube section, be formed with the rounding off section between being connected of the two ends of described waveform arc section and upper and lower straight length, the waveform arc section has the cold and hot deformation space that contracts and rise.

For optimizing technique scheme, the concrete measure of taking also comprises:

Above-mentioned following T-Ring body adopts the welded still pipe cold-press moulding, and enamel firing is attached with glass-lined coating on the inwall of following T-Ring body and interior jar.

Above-mentioned following T-Ring body adopts the welded still pipe hot forming, and enamel firing is attached with glass-lined coating on the inwall of following T-Ring body and interior jar.

Above-mentioned following T-Ring body is structure ringwise.

Compared with prior art, T-Ring body down of the present utility model is shaped on straight length and lower straighttube section respectively, and be shaped on the waveform arc section of projection radially outward between last straight length and the lower straighttube section, be formed with the rounding off section between being connected of the two ends of waveform arc section and upper and lower straight length, the waveform arc section has the cold and hot deformation space that contracts and rise.The waveform arc section conduct expansion joint of T-Ring is down adopted at the T-Ring middle part under the utility model, make down T-Ring under the thermal stress effect, have the flexible space that adapts to distortion, thereby the interior jar of glass-lined coating burst porcelain problem that causes shunk in expanded by heating, cooling when having solved the welding of time T-Ring and chuck effectively, improved the production quality greatly, guarantee the qualification rate of product, prolonged the service life of product.And this wave forms T-Ring that expands down has handling ease, easy to assembly, characteristics such as cost is low, adaptability is strong.

Description of drawings

Fig. 1 is the utility model embodiment syndeton schematic diagram;

Fig. 2 is the structural representation of T-Ring under wave forms expands among Fig. 1;

Fig. 3 is one of syndeton schematic diagram of T-Ring under the semicanal type;

Fig. 4 be T-Ring under the semicanal type the syndeton schematic diagram two;

Fig. 5 is the syndeton schematic diagram of T-Ring under bowl lid type.

The specific embodiment

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

Fig. 1 is to Figure 2 shows that structural representation of the present utility model.

Reference numeral wherein is: following T-Ring body 1, rounding off section 1a, last straight length 11, waveform arc section 12, lower straighttube section 13, interior jar 2, chuck 3, glass-lined coating 4.

In the prior art, the chuck of glass-lined equipment and interior jar carry out airtight being welded to connect by following T-Ring, as shown in Figure 3, Figure 4, Fig. 3, Fig. 4 are the syndeton schematic diagram of T-Ring 5 under two kinds of semicanal types, promptly adopt the connection diagram of a kind of glass-lined equipment retort that T-Ring 5 is connected under the semicanal type, T-Ring 5 is welded by straight tube 51 and semicanal 52 under the semicanal type.Semicanal 52 is by using steel pipe the mould press forming, and its difficulty of processing is relatively large.Adopt T-Ring 5 under the semicanal type, more than on technology the welding procedure of one straight tube 51 with semicanal 52, as Fig. 3, Fig. 4 represented, T-Ring 5 was respectively to adopt butt joint or overlap and is welded under the semicanal type, T-Ring 5 connects complexity, cost height under this semicanal type.Among the figure as can be seen, the semi arch cross-section radial of semicanal 52 is a horizontal direction, perpendicular with straight tube 51 cross sections, therefore the semicanal opening upwards accumulates in the condensate discharge in the semicanal 52 for convenience, prevents the semicanal corrosion, people also need increasing a hole on semicanal 52, and cock 53 of installation is set, and so just make its structure complicated more, increased work difficulty and material cost greatly.Facts have proved, semicanal 52 deformation position of these two kinds of patterns are not good, poor flexibility, flexible not enough, when expanded by heating, cooling contraction, following T-Ring and interior jar of weld seam junction cause that very easily stress is concentrated, very easily cause the glass-lined coating explosion, recoat the glaze enamel firing, reprocess cost unusual height again if remove glass-lined coating, therefore have a strong impact on the yield rate of product, greatly reduced operating efficiency.

Fig. 2 showed is the syndeton schematic diagram of T-Ring under the bowl lid type, under the bowl lid type T-Ring 6 be steel disc with circle with the mould press forming after more in accordance with regulations size carry out cutting processing and form, difficulty of processing is big, waste of material is many.This down T-Ring when assembling, the required precision height, the assembling difficulty is big.Its heat that produces when T-Ring, chuck welding down can't discharge the swelling stress of chuck, and the alternation of cold and hot stress causes easily that the enamel coating at T-Ring position is quick-fried and falls, and has lost the effect of glass-lined coating, badly influences the safe operation and the service life of pressure vessel.

Extremely shown in Figure 2 as Fig. 1, T-Ring under a kind of wave forms of the present utility model expands, comprise T-Ring body 1 down, the upper surface of following T-Ring body 1 and interior jar 2 sealing welding mutually, its lower surface is welded with chuck 3, following T-Ring body 1 is shaped on straight length 11 and lower straighttube section 13 respectively, and be shaped on the waveform arc section 12 of projection radially outward between last straight length 11 and the lower straighttube section 13, be formed with rounding off section 1a between being connected of the two ends of waveform arc section 12 and upper and lower straight length, waveform arc section 12 has the cold and hot deformation space that contracts and rise.The utility model is owing to be provided with waveform arc section 12; the thermal stress of jar 2 and chuck 3 is poor in eliminating effectively; the glass-lined coating at protection T-Ring position; the two ends of waveform arc section 12 and last; the connection of lower straighttube section adopts rounding off can prevent that stress is concentrated; energy efficient is discharged; waveform arc section 12 cross-section radials are vertical direction; be in same direction with the straight length cross section; waveform arc section 12 makes the straight length expanded by heating; after cooling is shunk; bigger plastic deformation scope can be produced at the semi arch place, thereby the excessive burst porcelain that causes of stress of following T-Ring and interior jar of pad can be eliminated.

Among the embodiment, following T-Ring body 1 is structure ringwise, and following T-Ring body 1 usefulness Q235-B welded still pipe compacting forms, and enamel firing is attached with glass-lined coating 4 on the inwall of following T-Ring body and interior jar.Following T-Ring body 1 can guarantee that its processing dimension or processing back employing cutting method are to given size with the limit for height piece when compacting.Can adopt the hydraulic press cold-press moulding.Certainly, following T-Ring body 1 also can adopt Q235-B welded still pipe hot forming, can heat the back hot forming in the following center of T-Ring circular arc, be shaped the back down under the tube wall length of curve of T-Ring and the bowl lid type T-Ring equate, increase heat transfer length about 25% than straight tube.

T-Ring had following characteristics and advantage under waveform expanded:

The inner canister glass-lined coating burst porcelain problem that causes is shunk in expanded by heating, cooling when 1, effectively having solved the welding of time T-Ring and chuck, and product quality gets a promotion.

2, shape convenient, fastly, actual forming effect is good, has improved the production rate.

3, on bowl lid type and half cast cooperation processing expense of T-Ring each on average about 150 yuan, calculate to produce 3000 glass-lined equipments per year, year is paid about 450,000 yuan, and adopt the lower T-Ring of waveform expansion can utilize existing equipment processing, save cooperation processing and expense is reprocessed in burst porcelain, reduced the production cost.

4, with the comparing of half cast, corrugated-type expansion joint has also saved welding, semicanal and perforate thereof and the cock parts of one straight tube and semicanal, when having saved the Welder and raw and auxiliary material.

Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.

Claims

1. T-Ring under a wave forms expands, comprise T-Ring body (1) down, described T-Ring body upper surface down and interior jar (2) sealing welding mutually, its lower surface is welded with chuck (3), it is characterized in that: described T-Ring body (1) down is shaped on straight length (11) and lower straighttube section (13) respectively, and be shaped on the waveform arc section (12) of projection radially outward between last straight length (11) and the lower straighttube section (13), the two ends of described waveform arc section (12) and last, be formed with rounding off section (1a) between the connection of lower straighttube section, waveform arc section (12) has the cold and hot deformation space that contracts and rise.

2. T-Ring under a kind of wave forms according to claim 1 expands is characterized in that: described T-Ring body (1) down adopts the welded still pipe cold-press moulding, and enamel firing is attached with glass-lined coating (4) on the inwall of following T-Ring body (1) and interior jar (2).

3. a kind of wave forms expansion according to claim 1 is T-Ring down, it is characterized in that: described T-Ring body (1) down adopts the welded still pipe hot forming, and enamel firing is attached with glass-lined coating (4) on the inwall of following T-Ring body and interior jar.

4. according to T-Ring under claim 2 or the 3 described a kind of wave forms expansions, it is characterized in that: described T-Ring body (1) down is structure ringwise.