CN101244444A - Boiler tube expanding head for boiler tube expanding machine - Google Patents
Boiler tube expanding head for boiler tube expanding machine Download PDFInfo
- Publication number
- CN101244444A CN101244444A CNA2008100106710A CN200810010671A CN101244444A CN 101244444 A CN101244444 A CN 101244444A CN A2008100106710 A CNA2008100106710 A CN A2008100106710A CN 200810010671 A CN200810010671 A CN 200810010671A CN 101244444 A CN101244444 A CN 101244444A
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- China
- Prior art keywords
- tube
- boiler tube
- tube expanding
- roller
- mandrel
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Abstract
The invention discloses a tube expanding device, in particular to a tube expanding head for the tube expander, which mainly utilizes the device to enable the heat exchange pipe of a heat exchanger and a tube sheet to be expanded for stable sealing. The invention comprises a gatling (10), a conical mandrel (11) arranged inside the gatling (10), at least two vertical long holes evenly distributed on the circumference of the lateral wall of the gatling (10), a pin roller (15) arranged in each long hole. The tube expanding device has the advantages of enabling the sealing between the heat exchange pipe and the tube sheet 2 to be tighter, and the leakage phenomena of the mediator not to happen during the work.
Description
Technical field
Type of the present invention relates to a kind of expand tube device, and particularly a kind of boiler tube expanding head for boiler tube expanding machine mainly is to utilize this device with heat exchanger tube on the heat exchanger and tube sheet swelling, makes its secure seal.
Background technology
The heat exchanger tube that has several to be arranged in parallel in the heat exchanger, the termination of heat exchanger tube is connected with tube sheet, during installation the heat exchanger tube termination inserted in the hole on the tube sheet, utilize the expand tube head exchange heat pipe that joins with electric tube expander to dilate again, it closely is connected with tube sheet, both play fixedly connected effect, played the effect (referring to Fig. 1) of sealing again.It is bad that existing expand tube head dilates effect, occurs the seepage phenomenon between heat exchanger tube and the tube sheet often, finally makes the different medium in tube side and the shell side partially mixed; What have is lined with corrosion-resistant liner plate on tube sheet, during seepage, also can cause the medium in the tube side to enter between liner plate and the tube sheet, causes the corrosion to tube sheet.
Summary of the invention
The purpose of this invention is to provide that a kind of expand tube is effective, between heat exchanger tube and the tube sheet stable firmly, do not have the boiler tube expanding head for boiler tube expanding machine of medium seepage phenomenon in the junction, overcome the deficiencies in the prior art.
Boiler tube expanding head for boiler tube expanding machine of the present invention, it comprises tube 10, is provided with the mandrel 11 of taper in the inboard of tube 10, circumference is equally distributed on the sidewall of tube 10 is provided with at least two vertical slotted holes, and roller 15 is housed in each slotted hole.
Boiler tube expanding head for boiler tube expanding machine of the present invention, the slotted hole outer side edges place on the wherein said tube 10 is provided with rib 27.
Boiler tube expanding head for boiler tube expanding machine of the present invention, the termination of wherein said roller 15 is connected to spin 14, spin 14 is positioned at the ball hole on the tube 10, and the number of degrees of the cone angle B of described mandrel 11 are 3 °～5 °, the baffle plate 13 that is enclosed within on the mandrel 11 is arranged in the termination of tube 10 and is connected by bolt 12.
Boiler tube expanding head for boiler tube expanding machine of the present invention, the termination of wherein said tube 10 is connected to Taper Pipe 16, the slotted hole of the described roller 15 and the roller 15 of packing into is located on the described Taper Pipe 16, the number of degrees of the cone angle A of described Taper Pipe 16 are 50 °～70 °, the termination of described mandrel 11 is taper, and its cone angle is consistent with the number of degrees of the cone angle A of Taper Pipe 16.
Boiler tube expanding head for boiler tube expanding machine of the present invention, owing in the slotted hole on tube 10 roller 15 is arranged, and the slotted hole outer side edges has rib 27, during expand tube, this expand tube head is placed the heat exchanger tube endoporus, and mandrel 11 male cone (strobilus masculinus)s that join with electric tube expander lean the inboard that roller 15 makes roller 15 extruding heat exchanger tubes 1, and tube is driven by electric tube expander and rotates, roller 15 can roll and radial compression at the endoporus of heat exchanger tube 1, and heat exchanger tube 1 firmly is connected with tube sheet 2; Because the existence of spin 14 is arranged, the heat exchanger tube that is positioned at the tube sheet side edge can be squeezed out projection 4, make the sealing between heat exchanger tube and the tube sheet 2 tighter, medium seepage phenomenon does not take place at work; Owing to be connected to Taper Pipe 16 in the termination of tube 10, the port that utilizes roller on the Taper Pipe can exchange heat pipe 1 carries out flange, make the port of heat exchanger tube 1 form the flange 5 of outside upset, has further played sealing, firm effect.
Description of drawings
Fig. 1 is the johning knot composition between heat exchanger tube and the tube sheet in the prior art;
Fig. 2 is heat pipe among the present invention and the syndeton schematic diagram between the tube sheet;
The structural representation of tube 10, mandrel 11, roller 15, spin 14 among Fig. 3 embodiment 1;
Fig. 4 is an A-A sectional schematic diagram shown in Figure 3;
Fig. 5 is the structural representation of tube 10 among the embodiment 2, mandrel 11, Taper Pipe 16, roller 15;
Fig. 6 is a B-B sectional schematic diagram shown in Figure 5;
Fig. 7, Fig. 8, Fig. 9 be this expand tube head user mode figure.
The specific embodiment
Embodiment 1: shown in Fig. 3,4: 10 is tube, is provided with the mandrel 11 of taper in the inboard of tube 10, and circumference is equally distributed on the sidewall of tube 10 is provided with three vertical slotted hole, and roller 15 is housed in each slotted hole.The termination of roller 15 is connected with spin 14, and spin 14 is positioned at the ball hole on the tube 10, and the number of degrees of the cone angle B of mandrel 11 are controlled between 3 °～5 °, the baffle plate 13 that is enclosed within on the mandrel 11 is arranged in the termination of tube 10 and is connected by bolt 12.Slotted hole outer side edges place on the tube 10 is provided with rib 27, can prevent that roller 15 from outwards coming off.
Shown in Fig. 7,2: during use, be connected with hydraulic expanding tube machine 23 with tube 10 by mandrel 11, drive by supply unit 24 and fluid pressure drive device 22, the expand tube head of this device is packed in the heat exchanger tube 1, can exchange heat pipe 1 by the rotation of tube 10 dilates, itself and tube sheet 2 are combined closely, and on heat exchanger tube 1, be positioned at place, the side formation projection 4 of tube sheet 2, increase the fastness and the sealing that connect.Also can utilize by mechanical actuation device 21 driving device electric tube expanders 25 (referring to Fig. 8) to dilate, also can utilize manual electric tube expander 26 (referring to Fig. 9) to dilate.
Embodiment 2: shown in Fig. 5,6: be connected to Taper Pipe 16 with the termination of embodiment 1 different is tube 10, the slotted hole of three rollers 15 and the roller 15 of packing into evenly is published on the conical surface of Taper Pipe 16, the number of degrees of the cone angle A of Taper Pipe 16 are controlled between 50 °～70 °, the termination of mandrel 11 is taper, and its cone angle is consistent with the number of degrees of the cone angle A of Taper Pipe 16.Utilize this device can exchange heat pipe 1 and carry out flange and handle, the port that makes heat exchanger tube 1 turnup laterally forms flange 5 (referring to Fig. 2), makes heat exchanger tube 1 and tube sheet 2 and liner plate 3 is more firm and seal.
Claims (4)
1, a kind of boiler tube expanding head for boiler tube expanding machine, it is characterized in that: it comprises tube (10), be provided with the mandrel (11) of taper in the inboard of tube (10), circumference is equally distributed on the sidewall of tube (10) is provided with at least two vertical slotted holes, and roller (15) is housed in each slotted hole.
2, boiler tube expanding head for boiler tube expanding machine according to claim 1 is characterized in that: the slotted hole outer side edges place on the described tube (10) is provided with rib (27).
3, boiler tube expanding head for boiler tube expanding machine according to claim 2, it is characterized in that: the termination of described roller (15) is connected to spin (14), spin (14) is positioned at the ball hole on the tube (10), the number of degrees of the cone angle B of described mandrel (11) are 3 °～5 °, the baffle plate (13) that is enclosed within on the mandrel (11) is arranged in the termination of tube (10) and connected by bolt (12).
4, boiler tube expanding head for boiler tube expanding machine according to claim 2, it is characterized in that: the termination of described tube (10) is connected to Taper Pipe (16), the slotted hole of described roller (15) and the roller of packing into (15) is located on the described Taper Pipe (16), the number of degrees of the cone angle A of described Taper Pipe (16) are 50 °～70 °, the termination of described mandrel (11) is taper, and its cone angle is consistent with the number of degrees of the cone angle A of Taper Pipe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100106710A CN101244444A (en) | 2008-03-17 | 2008-03-17 | Boiler tube expanding head for boiler tube expanding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100106710A CN101244444A (en) | 2008-03-17 | 2008-03-17 | Boiler tube expanding head for boiler tube expanding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101244444A true CN101244444A (en) | 2008-08-20 |
Family
ID=39945248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100106710A Pending CN101244444A (en) | 2008-03-17 | 2008-03-17 | Boiler tube expanding head for boiler tube expanding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101244444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672378A (en) * | 2012-05-30 | 2012-09-19 | 上海电气核电设备有限公司 | Deformation-prevention device for use in welding of electric heater casing and lower end enclosure |
| CN104128517A (en) * | 2014-08-05 | 2014-11-05 | 中山市奥美森工业有限公司 | Multi-station pipe expander |
-
2008
- 2008-03-17 CN CNA2008100106710A patent/CN101244444A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672378A (en) * | 2012-05-30 | 2012-09-19 | 上海电气核电设备有限公司 | Deformation-prevention device for use in welding of electric heater casing and lower end enclosure |
| CN104128517A (en) * | 2014-08-05 | 2014-11-05 | 中山市奥美森工业有限公司 | Multi-station pipe expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080820 |