Double piston type controlled earthquake center vibrator

Abstract

A dual-piston vibrator vibrator related to petroleum seismic exploration equipment, comprising a gland 1, a wear-resistant sleeve 2, a piston 3, an upper oil chamber 4, an upper oil passage 5, a lower oil passage 6, a hammer body 8, a lower Oil chamber 7, oil drain port 9, piston 3 is installed in the upper and lower blind holes of hammer body 8 respectively, upper oil passage 5 and lower oil passage 6 are opened on hammer body 8, upper oil chamber 4 is connected with oil The channel 5 is connected, the lower oil chamber 7 is connected with the lower oil channel 6, and the hammer body 8 is fixed by the gland 1, which can effectively improve the pressure on the piston gland, reduce the difficulty of design, improve the processability, and reduce the volume of the working oil channel , so as to achieve a dual-piston vibrator vibrator that improves the vibration performance of the vibrator.

Description

technical field [0001] The invention relates to a petroleum seismic exploration equipment, in particular to a double-piston vibrator vibrator. Background technique [0002] Most of the vibrator vibrators currently used are traditional piston structures, such as figure 1 As shown, the traditional vibroseis vibrator mainly consists of a hammer body, a piston, a copper sleeve, a gland, a seal, and a fastener. The hammer body is a rectangular steel block with a garden through hole in the center; the piston and piston rod It is cylindrical, the diameter of the piston is equal to the diameter of the round hole on the hammer body and larger than the diameter of the piston rod, and the piston rod has a reduced diameter; the copper sleeve is hollow cylindrical, and the size of the end surface is equal to the area difference between the piston and the piston rod. There are oil holes in the cover. After assembly, as shown in the figure, the hammer body, the piston, its piston rod and...

AI Technical Summary

Problems solved by technology

As the vibration output of the vibrator increases, the pressure on the gland will also increase, the difficulty of design and processing will increase, and the sealing will be difficult

[0006] 2. The volume of the oil passage is large, which reduces the fixed frequency (resonant frequency) of the vibrator, which is not conducive to the improvement of the vibration performance of the vibrator

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