CN203824398U - Gill for H-type gilled pipe - Google Patents

Gill for H-type gilled pipe Download PDF

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Publication number
CN203824398U
CN203824398U CN201420187651.1U CN201420187651U CN203824398U CN 203824398 U CN203824398 U CN 203824398U CN 201420187651 U CN201420187651 U CN 201420187651U CN 203824398 U CN203824398 U CN 203824398U
Authority
CN
China
Prior art keywords
gill
extreme point
arc
base tube
arc tooth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201420187651.1U
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Chinese (zh)
Inventor
刘斌
沈国斌
陈升
胡文进
向俊平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MHPS Dongfang Boiler Co Ltd
Original Assignee
EASTERN HITACHI BOILER Ltd Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EASTERN HITACHI BOILER Ltd Co filed Critical EASTERN HITACHI BOILER Ltd Co
Priority to CN201420187651.1U priority Critical patent/CN203824398U/en
Application granted granted Critical
Publication of CN203824398U publication Critical patent/CN203824398U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a gill for an H-type gilled pipe. The gill comprises a gill main body adopting 09CrCuSb steel materials, wherein an opening is formed in one side of the gill main body, and is formed by arc-shaped punching teeth positioned at the middle part and rectilinear end parts positioned at both ends; the arc of the arc-shaped punching teeth takes the shape of an ellipse. By the adoption of the elliptic arc-shaped punching teeth, when the gill is assembled and welded with a base tube, the weld joint fusing rate reaches 93-97%, the outline molding is good, and the pull-off strength is relatively high; the gill overcomes the defects that the fusing rate of the gill adopting the 09CrCuSb steel materials and the base tube in welding is relatively low, the outline molding is poor, and the pull-off strength is relatively low; the welding quality is greatly improved, and the integral quality and the heat exchanging efficiency when in use of the H-type gilled pipe adopting the 09CrCuSb steel materials are greatly improved.

Description

Fin for H type gilled tube
Technical field
The utility model relates to a kind of fin for H type gilled tube, relates in particular to a kind of for using the fin of the H type gilled tube of 09CrCuSb steel matter.
Background technology
H type gilled tube is because the good and good advantages such as anti-ash cutting performance of heat transfer property are widely adopted gradually in highly energy-consuming fields such as electric power, chemical industry.H type gilled tube forms by base tube with perpendicular to base tube axis and the fin that is installed on symmetrically base tube both sides, and fin is fitted and is fixed by welding on base tube by being arranged on arc tooth punching and the base tube outer wall of fin body one side.The fin of traditional H type gilled tube, the arc tooth punching of its opening is and the circle of base tube outer wall circumference adaptation that the material of fin and base tube generally adopts common straightcarbon steel.In recent years, because 09CrCuSb steel has good low temperature decay resistance, be applied to gradually make H type gilled tube, the traditional circle of the same employing of arc tooth punching of fin body.But because 09CrCuSb steel is at high temperature more liquid, cause fin weld seam fusion rate lower (75-85%) when welding with base tube, weld seam pull-off strength is lower (150-160MPa) also, and in welding process, weld seam perforation phenomenon is serious simultaneously, and outward appearance moulding is poor.
Summary of the invention
The utility model is mainly to solve that the weld seam perforation phenomenon that prior art exists is serious, outward appearance moulding is poor and the technical problem of pull-off strength and the weld defect such as fusion rate is lower, provide a kind of weld seam perforation less, outward appearance forming, fusion rate and the higher novel fin for H type gilled tube of pull-off strength.
The utility model is mainly solved by following technical proposals above-mentioned technical problem: the utility model comprises the fin body that adopts 09CrCuSb steel matter, one side of fin body has by arc tooth punching and is positioned at the opening that the linear end at arc tooth punching two ends forms, arc tooth punching is positioned at the middle part of opening, linear end is tangent with upper extreme point and the lower extreme point of arc tooth punching respectively, it is characterized in that: the arc of arc tooth punching is for oval, and oval minor axis is vertical with the line of upper extreme point and lower extreme point.
As preferably, oval major axis is greater than base tube external diameter, minor axis is less than base tube external diameter, and the ratio between oval major and minor axis is 1.15: 1.
As preferably, the formed angle of the line of upper extreme point and lower extreme point and elliptical center is between 90 ° ~ 110 °.
Therefore, the utility model is novel in design, rational in infrastructure, has the following advantages:
The utility model is owing to having adopted oval-shaped arc tooth punching, when fin assembles with the base tube that is equally 09CrCuSb steel matter, the center of arc tooth punching first contacts with base tube outer wall, and other parts of arc tooth punching and the outer wall of base tube now do not contact, when fin and base tube carry out Flash Welding welding, the heat that produces of welding from the center of arc tooth punching along with the propelling of welding is transmitted toward the two ends of arc tooth punching, avoided thus heat to concentrate to the centre of arc tooth punching, effectively avoided the perforation of weld seam, make the outward appearance moulding of weld seam simultaneously, pull-off strength and fusion rate are compared with prior art all greatly improved and improve, the utility model weld seam fusion rate can reach 93-97%, pull-off strength can reach 240-300MPa, outward appearance moulding is good, bore a hole less.The contrast of the novel index of correlation with prior art of this use refers to following table.
The contrast of 09CrCuSb steel matter H type gilled tube welding quality
Outward appearance moulding Pull-off strength (MPa) Fusion rate (%)
Prior art Perforation is serious, and moulding is poor 150-160 75-85
The utility model Bore a hole less, moulding is good 240-300 93-97
Therefore, the utility model has solved the poor technical problem of the welding quality of prior art when adopting 09CrCuSb steel matter and between base tube, effectively promoted the total quality of H type gilled tube, H type gilled tube is all greatly improved heat exchange efficiency and the service life when coming into operation.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is assembling schematic diagrames of the utility model and base tube.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figures 1 and 2, the utility model comprises the fin body 1 that adopts 09CrCuSb steel matter, one side of fin body 1 is offered opening 2, opening 2 is comprised of with the linear end 3 that is positioned at opening 2 two ends the arc tooth punching 4 that is positioned at opening 2 middle parts, linear end 3 is tangent with upper extreme point 5 and the lower extreme point 6 of arc tooth punching 4 respectively, arc tooth punching 4 is oval, oval minor axis is vertical with the line of lower extreme point 6 with upper extreme point 5, oval major axis is 52 ㎜, minor axis is 45.2 ㎜, upper extreme point 5 and lower extreme point 6 are 90 ° with the formed angle of line of elliptical center.
The utility model mates use with the base tube 8 that caliber is 51 ㎜, and the material of base tube 8 is 09CrCuSb steel.When erection welding, first base tube 8 fitted with arc tooth punching 4 of the present utility model and guarantee that the center of arc tooth punching 4 first contacts with base tube 8 outer walls, then welds by the mode of Flash Welding.After having welded, weld seam fusion rate reaches 93-97%, and outward appearance moulding is good, and pull-off strength reaches 240-300MPa.
Embodiment 2: as shown in Figures 1 and 2, the utility model comprises the fin body 1 that adopts 09CrCuSb steel matter, one side of fin body 1 is offered opening 2, opening 2 is comprised of with the linear end 3 that is positioned at opening 2 two ends the arc tooth punching 4 that is positioned at opening 2 middle parts, linear end 3 is tangent with upper extreme point 5 and the lower extreme point 6 of arc tooth punching 4 respectively, arc tooth punching 4 is oval, oval minor axis is vertical with the line of lower extreme point 6 with upper extreme point 5, oval major axis is 39.8 ㎜, minor axis is 36.8 ㎜, upper extreme point 5 and lower extreme point 6 are 110 ° with the formed angle of line of elliptical center.
The utility model mates use with the base tube 8 that caliber is 38 ㎜, and the material of base tube 8 is 09CrCuSb steel.When erection welding, first base tube 8 fitted with the utility model arc tooth punching 4 and guarantee that the center of arc tooth punching 4 first contacts with base tube 8 outer walls, then welds by the mode of Flash Welding.After having welded, weld seam fusion rate reaches 93-97%, and outward appearance moulding is good, and pull-off strength reaches 240-300MPa.
It should be noted that, in the above-described embodiments, the formed angle of line of upper extreme point 5 and lower extreme point 6 and elliptical center be respectively 90 ° and 110 ° be of the present utility model two preferred, and can not be as improper restriction of the present utility model, the formed angle of line of upper extreme point 5 and lower extreme point 6 and elliptical center can be chosen setting between 90 ° to 110 °; Meanwhile, can offer two openings 2 or an opening 2 on each fin body 1, such variation all falls into protection domain of the present utility model.

Claims (3)

1. the fin for H type gilled tube, comprise the fin body (1) that adopts 09CrCuSb material, one side of described fin body (1) has by arc tooth punching (4) and is positioned at the opening (2) that the linear end (3) at described arc tooth punching (4) two ends forms, described arc tooth punching (4) is positioned at the middle part of described opening (2), described linear end (3) is tangent with upper extreme point (5) and the lower extreme point (6) of described arc tooth punching (4) respectively, it is characterized in that: the arc of described arc tooth punching (4) is oval (7), the minor axis of described ellipse (7) is vertical with the line of described lower extreme point (6) with described upper extreme point (5).
2. a kind of fin for H type gilled tube according to claim 1, it is characterized in that: the major axis of described ellipse (7) is greater than base tube (8) external diameter, minor axis is less than described base tube (8) external diameter, and the ratio between the major and minor axis of described ellipse (7) is 1.15: 1.
3. a kind of fin for H type gilled tube according to claim 1 and 2, is characterized in that: the formed angle of described upper extreme point (5) and described lower extreme point (6) and described ellipse (7) center is between 90 ° ~ 110 °.
CN201420187651.1U 2014-04-18 2014-04-18 Gill for H-type gilled pipe Expired - Lifetime CN203824398U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420187651.1U CN203824398U (en) 2014-04-18 2014-04-18 Gill for H-type gilled pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420187651.1U CN203824398U (en) 2014-04-18 2014-04-18 Gill for H-type gilled pipe

Publications (1)

Publication Number Publication Date
CN203824398U true CN203824398U (en) 2014-09-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420187651.1U Expired - Lifetime CN203824398U (en) 2014-04-18 2014-04-18 Gill for H-type gilled pipe

Country Status (1)

Country Link
CN (1) CN203824398U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482567A (en) * 2015-08-24 2017-03-08 江苏海德节能科技有限公司 Special-shaped double H-type finned tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482567A (en) * 2015-08-24 2017-03-08 江苏海德节能科技有限公司 Special-shaped double H-type finned tube

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: DONGFANG MHPS BOLIER CO., LTD.

Free format text: FORMER NAME: DONGFANG RILI BOILER CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 314001, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing

Patentee after: MHPS DONGFANG BOILER Co.,Ltd.

Address before: 314001, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing

Patentee before: Babcock-Hitachi Dongfang Boiler Co.,Ltd.

C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 314036 No. 1267, Chenggong Road, Zhejiang, Jiaxing

Patentee after: MHPS DONGFANG BOILER Co.,Ltd.

Address before: 314001, south side, No. four, Chengnan Road, Nanhu District, Zhejiang, Jiaxing

Patentee before: MHPS DONGFANG BOILER Co.,Ltd.

CX01 Expiry of patent term

Granted publication date: 20140910

CX01 Expiry of patent term