CN112264538B - Hydraulic pipe expander suitable for pipe fittings of different specifications - Google Patents
Hydraulic pipe expander suitable for pipe fittings of different specifications Download PDFInfo
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- CN112264538B CN112264538B CN202011106682.6A CN202011106682A CN112264538B CN 112264538 B CN112264538 B CN 112264538B CN 202011106682 A CN202011106682 A CN 202011106682A CN 112264538 B CN112264538 B CN 112264538B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
- B21D39/203—Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material
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Abstract
The invention relates to the field of hydraulic pipe expanding equipment and discloses a hydraulic pipe expander suitable for pipes of different specifications, which comprises a pipe and a pipe plate which need to be connected by a pipe expanding and a pressure pipe extending into the pipe. The hydraulic tube expander applicable to the pipe fittings of different specifications is applicable to the expansion work of the pipe plates of the pipes of different specifications by adopting the structural design of the movable outer limiting sleeve, the first inner baffle and the second inner baffle on the pressurizing pipe so as to try to adjust the tightness state of the elastic rubber sleeve between the outer limiting sleeve and the positioning disc according to the inner diameters and the expansion joint lengths of the pipes and the pipe plates.
Description
Technical Field
The invention relates to the field of hydraulic pipe expander equipment, in particular to a hydraulic pipe expander suitable for pipe fittings of different specifications.
Background
The hydraulic pipe expander is a tool for realizing hydraulic expansion joint in the manufacture of heat exchangers in the fields of petrifaction, electric power, boilers, nuclear power, refrigeration and the like, the expansion joint is realized under the pressure of the hydraulic pipe expander, the hydraulic pipe expander process is also called soft expansion joint and can expand and joint more pipe joints at one time, and the hydraulic pipe expander utilizes that when ultrahigh hydraulic pressure enters a high-pressure-resistant elastic rubber body through a high-strength alloy core rod, the high-pressure-resistant elastic rubber body generates radial pressure which is enough to enable a pipe material to generate plastic deformation, so that the expansion joint between a pipe and a pipe plate is realized.
However, when the conventional hydraulic pipe expander is used, since the length of the elastic rubber is fixed and the diameter value is fixed, when pipes and pipe plates with different specifications are expanded, the elastic rubber with various specifications needs to be prepared and replaced, so that the production efficiency is low and the cost is high.
Disclosure of Invention
The invention provides a hydraulic pipe expander suitable for pipes of different specifications, which has the advantages of being suitable for hydraulic pipe expanding of pipes of different specifications and solves the technical problems mentioned in the background technology.
In order to realize the purpose, the invention provides the following technical scheme to realize the purpose: the utility model provides a hydraulic pressure pipe expander suitable for different specification pipe fittings, is including the pipe and the tube sheet that need the expand tube to connect, still including extending to the intraductal pressure tube that fills, its characterized in that the one end fixedly connected with of pressure tube is located the positioning disk of intraductal, the fixed cover of the other end of pressure tube is equipped with the tube head end that is located the pipe outside, it has the slip dish that is located between positioning disk, the tube head end still to overlap movably on the pressure tube, fixedly connected with elastic rubber cover between slip dish and the positioning disk, and the initial length value of elastic rubber cover is the interval value of tube head end and positioning disk, the outer lane movable sleeve of elastic rubber cover is equipped with outer spacing sleeve, and the diameter value of outer spacing sleeve one side inner circle is less than the diameter value of its opposite side inner circle, the inside movable sleeve of elastic rubber cover is equipped with first interior baffle and the second interior baffle that is located outer spacing sleeve both sides, the outside diameter value of first interior baffle and second interior baffle all is greater than the diameter value of outer spacing sleeve one side, the outside diameter value of second interior baffle is less than the diameter value of spacing sleeve one side, the adjustable baffle and the interval of second interior baffle.
Optionally, a diversion chamber is arranged inside the positioning disk, the diversion chamber is communicated with an inner cavity of the pressurizing pipe, a plurality of water chutes which are symmetrically distributed are formed in the side surface of the positioning disk, and notches of the water chutes face horizontally.
Optionally, the top and the bottom of the side surface of the first inner baffle are fixedly connected with a linkage shaft, one end of the linkage shaft, which is far away from the first inner baffle, penetrates through the second inner baffle and is fixedly connected with a positioning threaded sleeve, a certain distance value is reserved between the side surface of the positioning threaded sleeve and the side surface of the second inner baffle, an adjusting threaded pipe is sleeved on the outer side thread of the positioning threaded sleeve, and one end of the adjusting threaded pipe is movably connected with the side surface of the second inner baffle.
Optionally, the top and the bottom of the side surface of the adjusting solenoid are both provided with a groove, and the top and the bottom of the side surface of the sliding disc are both fixedly connected with a clamping block matched with the groove.
Optionally, the inner sides of the first inner baffle and the second inner baffle are respectively provided with a sealing ring, and the inner side of the sealing ring is movably sleeved with the outer side of the pressurizing pipe.
The invention provides a hydraulic pipe expander suitable for pipe fittings of different specifications, which has the following beneficial effects:
1. this hydraulic pressure pipe expander suitable for different specification pipe fittings, through the mobilizable outer spacing sleeve on the pressure pipe of inflating, the structural design of baffle in first interior baffle and the second, so that according to the pipe, the inboard diameter of tube sheet, the expansion joint length comes the trial run to adjust outer spacing sleeve, the elasticity state of elastic rubber cover between the positioning disk, be applicable to the pipe tube sheet inflation work of different specifications, the elastic rubber length of having avoided current hydraulic pressure pipe expander is fixed, the diameter value is fixed, when the pipe to different specifications, the tube sheet carries out the expansion joint, need the elastic rubber of the various specifications of spare part, and change, lead to low in production efficiency, problem with high costs.
2. This hydraulic pressure pipe expander suitable for different specification pipe fittings, it is adjustable through the length value between outer spacing sleeve pipe, the positioning disk, when carrying out the expanded joint work, avoided the elastic rubber cover to receive the too big easy problem of fatigue of inflation degree and receive the easy problem to the both sides extrusion of inflation degree undersize to ensure the normal clear of pipe, tube sheet expanded joint work, improved whole work efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a left side view of the external restraint sleeve of the structure of FIG. 1 in accordance with the present invention;
FIG. 4 is a right side view of the external restraint sleeve of the structure of FIG. 1 in accordance with the present invention; .
In the figure: 1. a pressurizing pipe; 101. a seal ring; 2. a tube end; 3. positioning a plate; 301. a shunt chamber; 302. a water chute; 4. a sliding disk; 5. an elastic rubber sleeve; 6. an outer limiting sleeve; 7. a first inner baffle; 701. a linkage shaft; 702. positioning threaded sleeves; 8. a second inner baffle; 9. adjusting a solenoid; 10. a tube; 11. a tube sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-4, a hydraulic pipe expander suitable for pipe fittings of different specifications comprises a pipe 10 and a pipe plate 11 which need to be connected by a pipe expanding, and further comprises a pressurizing pipe 1 extending into the pipe 10, and is characterized in that one end of the pressurizing pipe 1 is fixedly connected with a positioning disc 3 positioned in the pipe 10, the other end of the pressurizing pipe 1 is fixedly sleeved with a pipe head end 2 positioned outside the pipe 10, the pressurizing pipe 1 is also movably sleeved with a sliding disc 4 positioned between the positioning disc 3 and the pipe head end 2, an elastic rubber sleeve 5 is fixedly connected between the sliding disc 4 and the positioning disc 3, the initial length value of the elastic rubber sleeve 5 is the distance value between the pipe head end 2 and the positioning disc 3, an outer ring of the elastic rubber sleeve 5 is movably sleeved with an outer limiting sleeve 6, and the diameter value of an inner ring at one side of the outer limiting sleeve 6 is smaller than that of an inner ring at the other side of the outer limiting sleeve 6, the elastic rubber sleeve 5 is movably sleeved with a first inner baffle 7 and a second inner baffle 8 which are positioned at two sides of an outer limiting sleeve 6, the outside diameter values of the first inner baffle 7 and the second inner baffle 8 are both larger than the diameter value of the inner ring at one side of the outer limiting sleeve 6, the outside diameter value of the second inner baffle 8 is smaller than the diameter value at the other side of the outer limiting sleeve 6, the distance between the first inner baffle 7 and the second inner baffle 8 is adjustable, when in use, the position of the outer limiting sleeve 6 is adjusted according to the width of a tube plate 11 and the diameter value of a tube 10, namely, the distance between the first inner baffle 7 and the second inner baffle 8 is increased, so that the degree of clamping the elastic rubber sleeve 5 by matching the first inner baffle 7 and the second inner baffle 8 with the outer limiting sleeve 6 is reduced, the outer limiting sleeve 6, the first inner baffle 7 and the second inner baffle 8 can be moved, if the width of the tube plate 11 or the diameter value of the tube 10 is larger, moving the outer limiting sleeve 6 towards the sliding disc 4, increasing the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3, so as to ensure that the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 expands on the inner sides of the tube 10 and the tube plate 11 under the action of water filling pressure, and ensuring that the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 keeps constant by reducing the distance between the first inner baffle 7 and the second inner baffle 8 so as to ensure that the first inner baffle 7 and the second inner baffle 8 are matched with the outer limiting sleeve 6 to clamp the elastic rubber sleeve 5 for fixing, and then feeding water at one end of the pressure filling tube 1 for stamping to ensure that the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 expands on the inner sides of the tube 10 and the tube plate 11 so that the elastic rubber sleeve 5 drives the expansion value of the tube 10 on the inner side of the tube plate 11 to contact and attach to the tube plate 11, and keep a certain time, thus finishing the expansion joint of the tube 10 and the tube plate 11, trial adjusting the tightness state of the elastic rubber sleeve 5 between the outer limit sleeve 6 and the positioning disc 3 according to the inner diameter and the expansion joint length of the tube 10 and the tube plate 11 by the length adjustable design of the elastic rubber sleeve 5 which can be inflated by water between the outer limit sleeve 6 and the positioning disc 3, so that the elastic rubber sleeve 5 between the outer limit sleeve 6 and the positioning disc 3 drives the tube 10 to expand and joint the inner wall of the tube plate 11, thereby avoiding the problems of fixed length and diameter value of the elastic rubber of the existing hydraulic tube expander, requiring spare parts of the elastic rubber with various specifications and replacing the elastic rubber when expanding and jointing the tubes 10 and the tube plates 11 with different specifications, resulting in low production efficiency and high cost, and adjusting the length value of the elastic rubber sleeve 5 between the outer limit sleeve 6 and the positioning disc 3, when the expansion joint is carried out, the problems that the elastic rubber sleeve 5 is easy to fatigue due to too large expansion degree and is easy to extrude to two sides due to too small expansion degree are avoided, so that the normal operation of the expansion joint of the pipe 10 and the pipe plate 11 is ensured, and the whole working efficiency is improved.
Wherein, the inside of positioning disk 3 is equipped with flow distribution chamber 301, and flow distribution chamber 301 communicates with each other with the inner chamber of pressure tube 1, a plurality of symmetric distribution's guiding gutter 302 has been seted up to positioning disk 3's side, and the notch of guiding gutter 302 is the horizontal orientation, high pressure water through the interior output of pressure tube 1 gets into flow distribution chamber 301 earlier, discharge by guiding gutter 302 side direction again, thereby cushion and baffling the high pressure water that gets into in elastic rubber sleeve 5, direct action in a position of elastic rubber sleeve 5 when having avoided the high pressure water to get into, lead to the problem of elastic rubber sleeve 5 damage easily, thereby the life of hydraulic pressure pipe expander has been improved.
Wherein, the top and the bottom of the side of the first inner baffle 7 are fixedly connected with a universal driving shaft 701, one end of the universal driving shaft 701 far away from the first inner baffle 7 runs through the second inner baffle 8 and is fixedly connected with a positioning threaded sleeve 702, a certain distance value is reserved between the side of the positioning threaded sleeve 702 and the side of the second inner baffle 8, an adjusting threaded pipe 9 is sleeved on the outer side thread of the positioning threaded sleeve 702, one end of the adjusting threaded pipe 9 is movably connected with the side of the second inner baffle 8, the adjusting threaded pipe 9 is sleeved with the positioning threaded sleeve 702 through the adjusting threaded pipe 9, when the adjusting threaded pipe 9 is rotated to move towards the outer side of the positioning threaded sleeve 702, the degree of clamping the elastic rubber sleeve 5 by the second inner baffle 8 and the first inner baffle 7 in cooperation with the outer limiting sleeve 6 is reduced, thereby facilitating the movement of the outer limiting sleeve 6, and after the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 is determined, the adjusting threaded pipe 9 is rotated reversely, so that the adjusting threaded pipe 9 moves towards the inner side of the positioning threaded sleeve 702, so that the distance value of the second inner baffle 8 and the first inner baffle 7 and the elastic rubber sleeve 6 are reduced, and the elastic rubber sleeve 5 are prevented from leaking.
Wherein, the top and the bottom of adjusting the solenoid 9 side all are seted up flutedly, the top of 4 sides of slip dish and the fixture block of the equal fixedly connected with in bottom and recess looks adaptation, adjust solenoid 9 through removing 4 orientation of slip dish, make the fixture block of 4 sides of slip dish and the recess joint on adjusting the solenoid 9, thereby it is rotatory through slip dish 4, it is rotatory to control to adjust solenoid 9, thereby adjust baffle 7 in first, the distance of baffle 8 in the second, so that baffle 7 in first, spacing sleeve 6 presss from both sides tightly or relaxs elasticity rubber sleeve 5 outside the 8 cooperation of baffle in the second, thereby the operating personnel of being convenient for uses.
Wherein, baffle 7 in first, baffle 8's inboard all is equipped with sealing washer 101 in the second, and the inboard of sealing washer 101 cup joints with the outside activity of pressurized tube 1, baffle 7 and pressurized tube 1 in to first through sealing washer 101, baffle 8 seals with the activity cup joint position of pressurized tube 1 in the second, avoid outer spacing sleeve 6 and positioning disk 3 between the elasticity rubber sleeve 5 when the inflation, the problem that leads to expand tube work failure appears revealing, and do not influence baffle 7 in first, baffle 8 removes about the spacing sleeve 6 is being pressurized in 1 along with outer spacing sleeve 6 in the second, adjust the length of spacing sleeve 6 and positioning disk 3 self-checking elasticity rubber sleeve 5.
During operation, firstly, the length of the expansion joint of the tube 10 in the tube plate 11 and the diameter of the inner side of the tube plate 11 are determined, so that the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 is adjusted, namely, the length value of the expansion joint of the tube 10 in the tube plate 11 and the diameter value of the inner side of the tube plate 11 are too large, the outer limiting sleeve 6 is moved towards the sliding disc 4, so that the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 is increased, the elastic rubber sleeve 5 is ensured to drive the tube 10 to expand on the inner side of the tube plate 11 in a pressurized state, the problem that the service life of the elastic rubber sleeve 5 is reduced due to the overlarge expansion degree is solved, and on the contrary, the outer limiting sleeve 6 is moved towards one side far away from the sliding disc 4, so that the length of the elastic rubber sleeve 5 between the outer limiting sleeve 6 and the positioning disc 3 is reduced, and the problem that the expansion operation of the elastic rubber sleeve 5 is affected by exposing towards two sides during expansion is solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A hydraulic tube expander suitable for tubes of different specifications comprises a tube (10) and a tube plate (11) which are connected by a tube expansion, and further comprises a pressurizing tube (1) extending into the tube (10), and is characterized in that one end of the pressurizing tube (1) is fixedly connected with a positioning disc (3) positioned in the tube (10), the other end of the pressurizing tube (1) is fixedly sleeved with a tube head end (2) positioned outside the tube (10), the pressurizing tube (1) is also movably sleeved with a sliding disc (4) positioned between the positioning disc (3) and the tube head end (2), an elastic rubber sleeve (5) is fixedly connected between the sliding disc (4) and the positioning disc (3), and the initial length value of elasticity rubber sleeve (5) is the spacing value of tube head end (2) and positioning disk (3), the outer lane movable sleeve of elasticity rubber sleeve (5) is equipped with outer spacing sleeve (6), and the diameter value of outer spacing sleeve (6) one side inner circle is less than the diameter value of its opposite side inner circle, the inside movable sleeve of elasticity rubber sleeve (5) is equipped with first interior baffle (7) and second interior baffle (8) that are located outer spacing sleeve (6) both sides, the outside diameter value of baffle (8) all is greater than the diameter value of outer spacing sleeve (6) one side inner circle in first interior baffle (7) and the second, the outside diameter value of baffle (8) is less than outer spacing sleeve (6) opposite side inner circle in the second, the outside diameter value of baffle (8) is less than the diameter value of outer spacing sleeve (6) opposite side The diameter value, the interval of baffle (8) is adjustable in baffle (7) and the second in the first, the inside of positioning disk (3) is equipped with branch flow chamber (301), and divides flow chamber (301) and the inner chamber that pressurizes pipe (1) and communicates with each other, a plurality of symmetric distribution's guiding gutter (302) are seted up to the side of positioning disk (3), and the notch of guiding gutter (302) is the horizontal orientation, the equal fixedly connected with universal driving shaft (701) in top and the bottom of baffle (7) side in the first, baffle (7) in the second and fixedly connected with location swivel nut (702) are run through to the one end that baffle (8) in the universal driving shaft (701) kept away from in first (701), the side of location swivel nut (702) and the side of baffle (8) in the second reserve has a certain interval value, the outside screw thread of location swivel nut (702) has cup jointed regulation solenoid (9), and the one end of just adjusting solenoid (9) and the side swing joint of baffle (8) in the second, the top and the equal bottom of regulation swivel nut (9) side are seted up the equal recess and the equal recess of fixed disk (4) and the equal looks adaptation.
2. A hydraulic expander adapted for use with tubulars of different sizes according to claim 1, wherein: the inner sides of the first inner baffle (7) and the second inner baffle (8) are respectively provided with a sealing ring (101), and the inner side of the sealing ring (101) is movably sleeved with the outer side of the pressurizing pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106682.6A CN112264538B (en) | 2020-10-16 | 2020-10-16 | Hydraulic pipe expander suitable for pipe fittings of different specifications |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106682.6A CN112264538B (en) | 2020-10-16 | 2020-10-16 | Hydraulic pipe expander suitable for pipe fittings of different specifications |
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| CN112264538A CN112264538A (en) | 2021-01-26 |
| CN112264538B true CN112264538B (en) | 2022-11-01 |
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| CN202011106682.6A Active CN112264538B (en) | 2020-10-16 | 2020-10-16 | Hydraulic pipe expander suitable for pipe fittings of different specifications |
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| CN114101504B (en) * | 2021-10-15 | 2024-01-23 | 内蒙古工业大学 | Universal fixture for heat setting of metal vascular stent |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2316064Y (en) * | 1996-07-26 | 1999-04-28 | 江苏石油化工学院 | Hydraulic expansion-jointing equipment |
| CN2311326Y (en) * | 1997-08-26 | 1999-03-24 | 大庆石油管理局建设材料公司 | Adjustable hydraulic pipe expansion device |
| CN2332505Y (en) * | 1997-12-19 | 1999-08-11 | 胡振伦 | Elastic electric tube expander |
| CN2387988Y (en) * | 1999-08-31 | 2000-07-19 | 攀钢集团煤化工公司 | Hydraulic tube expander |
| EP1604752B1 (en) * | 2004-06-03 | 2008-03-19 | Balcke-Dürr GmbH | Method and device for hydraulic expansion |
| JP4408873B2 (en) * | 2006-04-10 | 2010-02-03 | 株式会社スギノマシン | Liquid pressure expansion molding equipment |
| CN203184463U (en) * | 2013-03-20 | 2013-09-11 | 四川泸天化股份有限公司 | Rubber expanded connection machine |
| JP6196524B2 (en) * | 2013-10-22 | 2017-09-13 | 株式会社スギノマシン | Hydraulic pipe expansion device |
| CN209520281U (en) * | 2019-01-29 | 2019-10-22 | 成都易弘科技实业有限公司 | A kind of hydraulic tube expander |
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Effective date of registration: 20221012 Address after: 528400 first floor, no.6, Jinhe Road, Nantou Town, Zhongshan City, Guangdong Province Applicant after: Eisenman Thermal Technology Co.,Ltd. Address before: 066000 No.261, group 14, chuiliu new village, Lulong Town, Lulong County, Qinhuangdao City, Hebei Province Applicant before: Chen Xi |
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