CN215116831U - Weight of controllable seismic source vibrator - Google Patents
Weight of controllable seismic source vibrator Download PDFInfo
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- CN215116831U CN215116831U CN202121090647.XU CN202121090647U CN215116831U CN 215116831 U CN215116831 U CN 215116831U CN 202121090647 U CN202121090647 U CN 202121090647U CN 215116831 U CN215116831 U CN 215116831U
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- heavy hammer
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Abstract
The utility model discloses a heavy hammer of a vibroseis vibrator, which comprises a lower flat plate, wherein the upper surface of the lower flat plate is fixedly provided with a stand column, and the upper end of the stand column is fixedly provided with an upper flat plate; the utility model discloses a ballast tank and a plurality of oilhole realize not increasing the weight height, increase the working stroke of weight, can make the pressure and the flow distribution that get into the working chamber even to reach and both to satisfy the peak value and exert oneself, can satisfy the output again and be sinusoidal requirement, when the working chamber oil feed of upper end, the working chamber of lower extreme is got rid of inside oil, and the effort of hydraulic oil is used in between piston and the last copper sheathing, promotes weight reciprocating motion from top to bottom. The counter-acting force generated by the movement of the heavy hammer pushes the lower flat plate to generate vibration force, and the vibration force acts on the ground to generate vibration waves. The reflected wave of the vibration wave generated in the underground rock stratum is received by a detector on the ground, and the structure of the underground rock stratum can be known by analyzing the reflected wave.
Description
Technical Field
The utility model relates to a seismic source vibrator technical field specifically is a weight of controllable seismic source vibrator.
Background
The external dependence of petroleum and natural gas seriously threatens national economic development and national energy safety of China, and oil and gas exploration activities develop from conventional exploration to high-precision and low-frequency directions. The controllable seismic source is the most successful non-explosive seismic source used so far, and has the advantages of controllable excitation frequency and amplitude, continuous vibration, high seismic operation efficiency, safety, environmental protection and the like, and is mainly characterized in that high hydraulic oil respectively enters upper and lower cavities of a heavy hammer to drive the heavy hammer to do vertical reciprocating motion by generating artificial vibration signals and continuously reversing an electro-hydraulic servo valve, the excitation signals are transmitted to the ground through a piston rod and a flat plate tightly pressed on the ground, and geophysical exploration personnel can judge whether the underground oil and gas reservoir exists or not through the detection and explanation of reflected seismic waves;
the heavy hammer of the existing large-stroke vibrator has two main structures, one is to increase the height of the heavy hammer and meet the stroke requirement. One is that hydraulic oil directly gets into the inside working chamber of weight through the oil duct, and the homogeneity of pressure distribution and flow distribution of this kind of structure working chamber is relatively poor. The output force of the controllable seismic source meets the requirements of peak output force and sine wave output force. Practice proves that increasing the height of the heavy hammer and the nonuniformity of pressure distribution and flow distribution in the working cavity can increase the waveform distortion of the shock wave, and therefore, the heavy hammer of the vibrator of the controllable seismic source is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vibroseis vibrator's weight to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a vibroseis vibrator's weight, includes the lower flat board, the fixed surface is equipped with the stand down on the flat board, the fixed upper flat board that is equipped with in stand upper end, go up the flat board and fix the piston rod that is equipped with down in the middle of the flat board, it is equipped with the weight to slide on the piston rod, the fixed copper sheathing that is equipped with on the weight, the fixed copper sheathing that is equipped with down on the weight, the fixed piston that is equipped with in piston rod middle part, the fixed piston ring that is equipped with on the piston rod, the fixed bush that is equipped with on the weight, vibroseis vibrator's weight overall structure makes hydraulic oil get into cavity of resorption respectively, drives the weight and makes vertical reciprocating motion, spreads into the excitation signal into the ground through piston rod and the flat board that compresses tightly on the ground into, through detection and explanation to the reflection seismic wave, can judge whether there is the possibility of oil gas reservoir in the underground.
Preferably, the weight is provided with a working cavity, the lower end of the weight is fixedly provided with a centering leather bag, and the centering leather bag is filled with air to support the weight, so that the weight is positioned at the center position in the initial state.
Preferably, the weight is provided with an oil duct, the weight is provided with a pressure equalizing groove, one side of the pressure equalizing groove is provided with an oil hole, the oil duct is connected with the pressure equalizing groove, the oil hole is connected with the working cavity, hydraulic oil enters the pressure equalizing groove from the oil duct and then enters the working cavity through the oil hole, and the uniformity of pressure distribution and flow distribution of the working cavity is improved through the plurality of oil holes.
Preferably, a servo valve is fixedly arranged on the outer side of the heavy hammer, an outlet hole on one side of the servo valve is connected with an oil duct of the heavy hammer, an outlet hole on the other side of the servo valve is connected with a hydraulic pump through a leather hose, hydraulic oil conveyed by the hydraulic pump enters a working cavity of the heavy hammer through the servo valve, and the servo valve can control the direction of the hydraulic oil entering the heavy hammer, so that the heavy hammer can reciprocate up and down.
Preferably, the pressure equalizing groove is annular and distributes hydraulic oil.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a ballast tank and a plurality of oilhole realize not increasing the weight height, increase the working stroke of weight, can make the pressure and the flow distribution that get into the working chamber even to reach and both to satisfy the peak value and exert oneself, can satisfy the output again and be sinusoidal requirement, when the working chamber oil feed of upper end, the working chamber of lower extreme is got rid of inside oil, and the effort of hydraulic oil is used in between piston and the last copper sheathing, promotes weight reciprocating motion from top to bottom. The counter-acting force generated by the movement of the heavy hammer pushes the lower flat plate to generate vibration force, and the vibration force acts on the ground to generate vibration waves. The reflected wave of the vibration wave generated in the underground rock stratum is received by a detector on the ground, and the structure of the underground rock stratum can be known by analyzing the reflected wave.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view of the pressure equalizing groove and the oil hole in FIG. 1 according to the present invention;
in the figure: 1. a lower flat plate; 11. a column; 12. a piston rod; 13. a weight; 14. an upper flat plate; 15. a copper bush is arranged; 16. mounting a copper sleeve; 17. a piston; 18. a piston ring; 19. a bushing; 2. a working chamber; 21. a centering skin pocket; 3. an oil passage; 31. a pressure equalizing groove; 32. an oil hole; 4. a servo valve; 41. a leather hose.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a weight of a vibroseis vibrator comprises a lower flat plate 1, wherein an upright 11 is fixedly arranged on the upper surface of the lower flat plate 1, an upper flat plate 14 is fixedly arranged at the upper end of the upright 11, a piston rod 12 is fixedly arranged between the upper flat plate 14 and the lower flat plate 1, a weight 13 is slidably arranged on the piston rod 12, an upper copper sleeve 16 is fixedly arranged on the weight 13, a lower copper sleeve 15 is fixedly arranged on the weight 13, a piston 17 is fixedly arranged in the middle of the piston rod 12, a piston ring 18 is fixedly arranged on the piston 17, a bush 19 is fixedly arranged on the weight 13, the lower flat plate 1 and the upper flat plate 14 have the same shape, the upright 11 is positioned in the middle of the lower flat plate 1 and the upper flat plate 14 and used for supporting the upper flat plate 14, the piston rod 12 is positioned in the middle of the lower flat plate 1 and the upper flat plate 14, the upper and lower ends are fixed through the lower flat plate 1 and the upper flat plate 14, the weight 13 is positioned on the piston rod 12, the lower copper sleeve 15 and the upper copper sleeve 16 are positioned in the middle of the weight 13, the inner wall is attached to the piston rod 12 to seal the working cavity 2, the piston 17 is positioned in the working cavity 2, the outer wall is attached to the inner wall of the working cavity 2, and the inner wall is fixed on the piston rod 12.
The weight 13 is provided with a working chamber 2, the lower end of the weight 13 is fixedly provided with a centering bag 21, and the centering bag 21 is filled with air to support the weight 13, so that the weight 13 is positioned at the center position in the initial state.
The oil duct 3 is arranged on the heavy hammer 13, the pressure equalizing groove 31 is arranged on the heavy hammer 13, the oil hole 32 is arranged on one side of the pressure equalizing groove 31, the oil duct 3 is connected with the pressure equalizing groove 31, the oil hole 32 is connected with the working cavity 2, the pressure equalizing groove 31 is annular, the oil duct 3 is located on the side face of the heavy hammer 13 and is arranged in an upper portion and a lower portion, the pressure equalizing groove 31 surrounds the working cavity 2, the oil holes 32 are located around the working cavity 2, hydraulic oil enters the pressure equalizing groove 31 from the oil duct 3 and then enters the working cavity 2 through the oil holes 32, and pressure distribution and flow distribution of the working cavity 2 are improved through the oil holes 32.
A servo valve 4 is fixedly arranged on one side of the upright post 11, a leather hose 41 is fixedly arranged on the servo valve 4, one end of the leather hose 41 is connected with the oil duct 3, and hydraulic oil is conveyed into the working cavity 2 through the external servo valve 4 and the leather hose 41。
The working principle is as follows: firstly, hydraulic oil in a servo valve 4 is fed into an oil duct 3 through a leather hose 41, oil from a hydraulic pump enters the oil duct 3 of a heavy hammer 13 through the servo valve 4, then is fed into a pressure equalizing groove 31 through the oil duct 3, and then enters a working cavity 2 through an oil hole 32, the height of the heavy hammer 13 is not increased through the pressure equalizing groove 31 and the oil holes 32, so that the working stroke of the heavy hammer 13 is increased, the pressure and the flow entering the working cavity 2 can be uniformly distributed, the requirement that the peak output force is met and the output force is sine wave can be met, when the working cavity 2 at the upper end receives oil, the internal oil is removed from the working cavity 2 at the lower end, and the action force of the hydraulic oil acts between a piston 17 and an upper copper sleeve 16 to push the heavy hammer 13 to reciprocate up and down. The reaction force generated by the movement of the weight 13 pushes the lower plate 1 downward to generate a vibration force, and the vibration force acts on the ground to generate a vibration wave. The reflected wave of the vibration wave generated in the underground rock stratum is received by a detector on the ground, and the structure of the underground rock stratum can be known by analyzing the reflected wave.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 (5)
1. The utility model provides a weight of vibroseis vibrator, includes dull and stereotyped (1) down, its characterized in that, dull and stereotyped (1) fixed surface is equipped with stand (11) down, stand (11) upper end is fixed and is equipped with upper plate (14), the fixed piston rod (12) that is equipped with in the middle of upper plate (14) and lower dull and stereotyped (1), it is equipped with weight (13) to slide on piston rod (12), fixed copper sheathing (16) of being equipped with on weight (13), fixed copper sheathing (15) down of being equipped with on weight (13), fixed piston (17) of being equipped with in piston rod (12) middle part, fixed piston ring (18) of being equipped with on piston (17), fixed bush (19) of being equipped with on weight (13).
2. The weight of the vibrator for a vibroseis according to claim 1, wherein: the weight (13) is provided with a working cavity (2), and the lower end of the weight (13) is fixedly provided with a centering leather bag (21).
3. The weight of the vibrator for a vibroseis according to claim 1, wherein: the oil-gas balance oil-gas separating device is characterized in that an oil duct (3) is formed in the heavy hammer (13), a pressure-equalizing groove (31) is formed in the heavy hammer (13), an oil hole (32) is formed in one side of the pressure-equalizing groove (31), the oil duct (3) is connected with the pressure-equalizing groove (31), and the oil hole (32) is connected with the working cavity (2).
4. The weight of the vibrator for a vibroseis according to claim 1, wherein: the outer side of the heavy hammer (13) is fixedly provided with a servo valve (4), an outlet hole on one side of the servo valve (4) is connected with an oil hole (32) of the heavy hammer (13), and an outlet hole on the other side of the servo valve (4) is fixedly provided with a leather hose (41).
5. The weight of the vibrator for a vibroseis according to claim 3, wherein: the pressure equalizing groove (31) is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121090647.XU CN215116831U (en) | 2021-05-20 | 2021-05-20 | Weight of controllable seismic source vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121090647.XU CN215116831U (en) | 2021-05-20 | 2021-05-20 | Weight of controllable seismic source vibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215116831U true CN215116831U (en) | 2021-12-10 |
Family
ID=79298622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121090647.XU Active CN215116831U (en) | 2021-05-20 | 2021-05-20 | Weight of controllable seismic source vibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215116831U (en) |
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2021
- 2021-05-20 CN CN202121090647.XU patent/CN215116831U/en active Active
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