CN112719104A

CN112719104A - Double-station efficient hydraulic pipe expander

Info

Publication number: CN112719104A
Application number: CN202011387742.6A
Authority: CN
Inventors: 邵天; 赵镇波; 王康线; 涂志祥; 娄强东; 李�杰; 袁杰; 郑娟
Original assignee: Anhui Yangtian Jinsu New Energy Equipment Co ltd
Current assignee: Anhui Yangtian Jinsu New Energy Equipment Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-04-30

Abstract

The invention discloses a double-station efficient hydraulic pipe expander, which belongs to the field of pipe expander equipment and mainly solves the problem of uniform expansion size of a pipe at a pipe expansion position, and comprises a cabinet, wherein the top of the cabinet is provided with a pipe expander, one side of the pipe expander is provided with an pipe expansion opening, a central column is arranged in the pipe expansion opening, a rubber sleeve keeping a gap with the central column is arranged outside the central column, an oil passage is arranged in the pipe expander, and one end of the oil passage is communicated with the gap between the central column and the rubber sleeve; be provided with oil tank, oil pump, advance oil pipe and go out oil pipe in the rack, oil tank and oil pump are through even pipe intercommunication, the one end of advancing oil pipe is connected oil pump, other end connection pipe expander, the one end of going out oil pipe is connected oil pump, the other end connection pipe expander. According to the invention, the rubber sleeve expands uniformly to prop open the pipe uniformly, the stress on the inner wall of the pipe is more uniform, the yield of the product is higher, and the method can be popularized and applied industrially in a large scale.

Description

Double-station efficient hydraulic pipe expander

Technical Field

The invention relates to the field of pipe expander equipment, in particular to a double-station efficient hydraulic pipe expander.

Background

The hydraulic pipe expander is special hydraulic expansion joint equipment for expansion joint of pipes and pipe plates in the manufacture of equipment such as heat exchangers, condensers, high-pressure heaters and the like, and the hydraulic expansion joint technology has the advantages of low manufacturing cost, light labor intensity, short manufacturing period, uniform and reliable expansion joint quality and the like. The hydraulic expansion joint technology is widely applied to heat exchanger manufacturing in the fields of petrochemical industry, electric power, boilers, nuclear power, refrigeration and the like, the quality and the production efficiency of domestic heat exchanger equipment are greatly improved, and in the pipe expanding process of some existing hydraulic pipe expanders, due to the fact that oil liquid extrudes the inner wall of a pipe unevenly, expansion sizes of the pipe are easy to be inconsistent, and the rejection rate of products is high.

Therefore, a double-station efficient hydraulic pipe expander needs to be designed.

Disclosure of Invention

The invention aims to provide a double-station efficient hydraulic pipe expander, which mainly solves the problem of uniform expansion size of a pipe at a pipe expansion position.

The invention provides a double-station efficient hydraulic pipe expander which comprises a cabinet, wherein a pipe expander is installed at the top of the cabinet, one side of the pipe expander is provided with an pipe expander opening, a central column is installed in the pipe expander opening, a rubber sleeve keeping a gap with the central column is arranged outside the central column, an oil passage is arranged in the pipe expander, and one end of the oil passage is communicated with the gap between the central column and the rubber sleeve;

be provided with oil tank, oil pump, advance oil pipe and play oil pipe in the rack, oil tank and oil pump are through even pipe intercommunication, the one end of advancing oil pipe is connected oil pump, the other end are connected the tube expander, the one end of going out oil pipe is connected oil pump, the other end are connected the tube expander.

In a preferred embodiment, one end of the oil inlet pipe, which is far away from the oil pump, is communicated with the oil passage, an oil inlet valve is arranged on the oil inlet pipe, one end of the oil outlet pipe, which is far away from the oil pump, is communicated with the oil passage, and an oil outlet valve is arranged on the oil outlet pipe.

In a preferred embodiment, the top of one side of the cabinet is provided with an inclined plane, and a pressure gauge, a display screen and a plurality of operation keys are arranged on the inclined plane.

In a preferred embodiment, the surface of the central column is provided with a pressure sensor, the pressure sensor is in circuit connection with the pressure gauge, the back of the display screen is provided with an industrial personal computer in a matching way, and the oil pump, the oil inlet valve and the oil outlet valve are all in circuit connection with the industrial personal computer.

In a preferred embodiment, a cabinet door is arranged on the front surface of the cabinet, and a plurality of rollers are arranged on the bottom of the cabinet.

The invention has the technical effects and advantages that:

the liquid is full of the clearance of center post and rubber sleeve, makes the rubber sleeve evenly expand, can be even struts tubular product, and the atress of tubular product inner wall is more even, and the bloated position wall thickness is more even, and the yield of product is higher, adopts the hydraulic pressure mode, and the expand tube process efficiency is also higher, can promote on a large scale, the industrialization application.

Drawings

FIG. 1 is an overall front view;

FIG. 2 is a front view showing the positional relationship of an oil tank, a connecting pipe, an oil pump, etc. in a cabinet;

FIG. 3 is an overall side view;

fig. 4 is an elevation view of the components in the expander in positional relationship.

Description of reference numerals: 1. a cabinet; 11. a roller; 12. a cabinet door; 13. a pressure gauge; 14. a display screen; 15. an operation key; 2. a pipe expander; 21. expanding the pipe orifice; 22. a central column; 23. a rubber sleeve; 24. an oil passage; 3. an oil tank; 31. connecting pipes; 32. an oil pump; 33. an oil inlet pipe; 331. an oil inlet valve; 34. an oil outlet pipe; 341. an oil outlet valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

A double-station efficient hydraulic pipe expander is shown in figures 1-4 and comprises a cabinet 1, wherein a pipe expander 2 is mounted at the top of the cabinet 1, one side of the pipe expander 2 is provided with an pipe expander opening 21, a pipe to be expanded is inserted into the pipe expander opening 21, a central column 22 is mounted in the pipe expander opening 21, a rubber sleeve 23 which keeps a gap with the central column 22 is arranged outside the central column 22, the end part of the central column 22 is fixedly connected with the rubber sleeve 23, the pipe opening of the pipe is clamped on the rubber sleeve 23, two oil passages 24 are arranged in the pipe expander 2, and one ends of the two oil passages 24 are respectively communicated with the gap between the central column 22 and the rubber;

an oil tank 3, an oil pump 32, an oil inlet pipe 33 and an oil outlet pipe 34 are arranged in the cabinet 1, the oil tank 3 is communicated with the oil pump 32 through a connecting pipe 31, one end of the oil inlet pipe 33 is connected with the oil pump 32, the other end of the oil inlet pipe 33 is connected with the tube expander 2, one end of the oil outlet pipe 34 is connected with the oil pump 32, and the other end of the oil outlet pipe is connected with the tube expander.

The end of the oil inlet pipe 33 far away from the oil pump 32 is communicated with the oil passage 24, the oil inlet pipe 33 is provided with an oil inlet valve 331, the end of the oil outlet pipe 34 far away from the oil pump 32 is communicated with the oil passage 24, the oil outlet pipe 34 is provided with an oil outlet valve 341, and the oil inlet valve 331 and the oil outlet valve 341 are both solenoid valves, such as model LD 72.

The top of one side of rack 1 is provided with the inclined plane, is provided with manometer 13, display screen 14 and a plurality of manipulating key 15 on the inclined plane, and the inclined plane is vertical angle with the sight, conveniently observes manometer 13, display screen 14 and manipulating key 15.

The surface of center post 22 is provided with pressure sensor, pressure sensor's model is DF9-16, pressure sensor circuit connection manometer 13, the pressure transmission that will detect shows to manometer 13, the supporting industrial computer that is provided with in the back of display screen 14, the industrial computer model is SK-12.1KDR, oil pump 32, oil inlet valve 331 and the equal circuit connection industrial computer of oil outlet valve 341, operating key 15 also the circuit connection industrial computer, through operating key 15, whether steerable oil pump 32 works, oil inlet valve 331 and oil outlet valve 341 open or close.

The front of rack 1 is provided with cabinet door 12, opens cabinet door 12, and the bottom of rack 1 such as convenient maintenance oil tank 3, oil pump 32 is provided with a plurality of gyro wheels 11, and whole equipment is convenient for remove.

In summary, one end of the pipe is inserted into the expansion pipe orifice 21 and sleeved on the rubber sleeve 23, the operation key 15 is operated, the oil pump 32 works, the oil inlet valve 331 is opened, the oil outlet valve 341 is closed, hydraulic oil fills the gap between the rubber sleeve 23 and the central column 22 through the oil inlet pipe 33 and the oil passage 24, as the oil continues to enter, the oil expands and thickens the rubber sleeve 23, the rubber sleeve 23 presses the pipe orifice sleeved outside to expand one end of the pipe, the pressure gauge 13 is observed during the process, when the pressure value reaches a preset value (at this time, the swelling amplitude of the pipe orifice is maximum), the oil inlet valve 331 is closed to prevent the oil from continuing to enter, the oil outlet valve 341 is opened again, the oil pump 32 works, and the oil in the gap between the rubber sleeve 23 and the central column 22 is pumped back into the oil tank 3 through the oil passage 24.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. The double-station efficient hydraulic pipe expander is characterized by comprising a cabinet (1), wherein a pipe expander (2) is mounted at the top of the cabinet (1), a pipe expander opening (21) is formed in one side of the pipe expander (2), a central column (22) is mounted in the pipe expander opening (21), a rubber sleeve (23) keeping a gap with the central column (22) is arranged outside the central column (22), an oil channel (24) is arranged in the pipe expander (2), and one end of the oil channel (24) is communicated with the gap between the central column (22) and the rubber sleeve (23);

be provided with oil tank (3), oil pump (32), advance oil pipe (33) and go out oil pipe (34) in rack (1), oil tank (3) and oil pump (32) are through linking pipe (31) intercommunication, the one end that advances oil pipe (33) is connected oil pump (32), the other end are connected tube expander (2), the one end of going out oil pipe (34) is connected oil pump (32), the other end are connected tube expander (2).

2. The double-station efficient hydraulic pipe expander according to claim 1, wherein one end of the oil inlet pipe (33) far away from the oil pump (32) is communicated with the oil passage (24), an oil inlet valve (331) is arranged on the oil inlet pipe (33), one end of the oil outlet pipe (34) far away from the oil pump (32) is communicated with the oil passage (24), and an oil outlet valve (341) is arranged on the oil outlet pipe (34).

3. The double-station efficient hydraulic pipe expander according to claim 2, wherein an inclined surface is arranged on the top of one side of the cabinet (1), and a pressure gauge (13), a display screen (14) and a plurality of operation keys (15) are arranged on the inclined surface.

4. The double-station efficient hydraulic pipe expander according to claim 3, wherein a pressure sensor is arranged on the surface of the central column (22), the pressure sensor is connected with the pressure gauge (13) through a circuit, an industrial personal computer is arranged on the back surface of the display screen (14) in a matched mode, and the oil pump (32), the oil inlet valve (331) and the oil outlet valve (341) are all connected with the industrial personal computer through circuits.

5. The double-station efficient hydraulic pipe expander according to claim 4, characterized in that a cabinet door (12) is arranged on the front surface of the cabinet (1), and a plurality of rollers (11) are arranged on the bottom of the cabinet (1).