常州海河液压

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Support hotline:+86-13506116557

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hydraulic tube expander:yzj-5型300mpa

hydraulic tube expander:yzj-5型300mpa

【Type】Hydraulic Tube Expander

【Contacts】Mr. zhou

【Telephone】+86.13506116557

【Fax】+86519.88407828

【E-mail】kxbg365@qq.com

【Address】103 Dongfang East Road, Changzhou

Consultation:+86.13506116557 QQ

Details

Video of finished product assembly workshop

 

 

Assembly shop

 

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Expansion operation

 

    YZJ series rapid expansion tube machine is a special expansion joint equipment for boiler and heat exchanger manufacturing and maintenance. The equipment can be used for reliable expansion joint of heat exchange tubes of various specifications and materials, especially for the expansion joint of thick tube plate and large diameter tube heat exchanger. The heat exchanger produced by rapid tube expander has the advantages of uniform tube expansion, safety and reliability, long service life and low failure rate. Moreover, the expanding operation is simple, the expanding speed is fast, the manufacturing or maintenance time is greatly shortened, and the production loss of the chemical plant is reduced.

 

YZJ hydraulic expansion joint technology has the following characteristics:
1. The tube sheet of any thickness shall be expanded uniformly in one time with full thickness.

2. Expansion joint of intermediate tubesheet or multi tubesheet heat exchanger of any depth.

3. Expansion joint shall be carried out for internal threaded pipe or welded pipe with seam.

4. After expanding, the residual stress is low and it is not easy to produce gap corrosion.

5. After the expansion of the heat exchange tube, the axial direction is not elongated but slightly contracted, which is conducive to reducing the operation noise.

6. The inner hole error of the pipe is large, and the expansion head diameter can be adjusted properly on site (the maximum grinding allowance of the expansion head is 0.3mm).

7. There is no oil pollution at the expansion joint, and expansion before welding is not affected.

8. The edge of heat exchanger with tube box can be expanded directly, which is very convenient.

9. Single person can be continuously expanded, and 6-8 pipe heads can be expanded every minute.

10. The comprehensive economic benefits have been greatly improved.

 

Main technical parameters:

working principle

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3、 Service conditions

1. Indoor use.
2. The ambient temperature is in the range of - 20 ℃ to 40 ℃.
3. The monthly average maximum relative humidity of the use area is not more than 85%, and the monthly average temperature of the month is not more than 30 ℃
4. There is no conductive dust and explosive gas around, which can seriously damage the metal box insulation.

4、 Structure and working principle

1. Tube expander structure
The hydraulic tube expander is mainly composed of hydraulic control system, pressure amplification system, hydraulic tube expander control system and automatic water adding system.

2. How it works
The hydraulic pump drives the hydraulic oil into the hydraulic control system by the motor to pressurize, and the pressurized expansion medium is sent to the operating handle through the high-pressure hose, so as to realize the pressure on the expansion joint. The pressure setting is mainly to set the pressure required by the user through the touch screen. The pressure of the expanding medium during operation is transmitted to the digital to analog conversion module through the transmitter. The pressure value is displayed in the touch screen "current pressure value". When the current pressure value is equal to the set pressure value, the pressure relief system works and the whole expanding process is completed.

5、 Precautions

1. When connecting the external power supply, it is necessary to distinguish the phase line and the central line, and it is strictly prohibited to connect them wrongly, otherwise the equipment will be electrified, causing unnecessary losses.
2. The water in the water tank must reach the calibrated water level, otherwise the supercharger will be damaged.
3. The connection between high-pressure hose and valve block must be installed firmly to avoid falling off of high-pressure work and accidents.
4. It is forbidden for the operator to command the machine to increase the pressure before the expansion head is correctly inserted into the pipe hole.
5. When the expansion tube is connected with the tube type heat exchanger, it is necessary to avoid the accident of the rupture of the expansion head along the pipe hole.
6. At the end of each shift, clean the sundries and equipment surface. Cut off the power before you leave.
7.During expanding operation, no one can stand on the opposite side of the operating handle to avoid injury!

 

Tube expanding sample

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