CN103760593A - Controllable seismic source vibrator and system - Google Patents
Controllable seismic source vibrator and system Download PDFInfo
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- CN103760593A CN103760593A CN201310491942.XA CN201310491942A CN103760593A CN 103760593 A CN103760593 A CN 103760593A CN 201310491942 A CN201310491942 A CN 201310491942A CN 103760593 A CN103760593 A CN 103760593A
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Abstract
The invention discloses a controllable seismic source vibrator comprising an upper end cover, an upper hydraulic oil duct, a lower hydraulic oil duct, a reaction base plate, standing columns, a hammer body, an upper hydraulic oil chamber, a lower hydraulic oil chamber, a piston rod, a piston, and piston bushes. The upper hydraulic oil duct communicated with the upper hydraulic oil chamber and the upper hydraulic oil chamber communicated with the upper hydraulic oil chamber are arranged in the piston rod and the piston. The standing columns are arranged at the two sides of the hammer body for centralizing the hammer body; the upper ends of the standing columns and the upper end of the piston rod are fixed at the upper end cover; and the lower ends of the standing columns and the lower end of the piston rod are fixed at the reaction base plate. In addition, the invention also discloses a controllable seismic source vibration system. In the controllable seismic source vibration system, a hydraulic servo valve is horizontally and fixedly installed at the upper end cover of the controllable seismic source vibrator. According to the invention, compared with the traditional piston type vibrator, the provided vibrator enables the interference on the vibration portion at the horizontal direction during the vertical vibration process to be reduced and thus the quality of the excited seismic wave signal can be improved.
Description
Technical field
The invention belongs to field of seismic exploration, particularly a kind of controlled source vibrator and system.
Background technology
Seismic prospecting is the important means of exploration oil, natural gas source, solid resource before probing.Seismic prospecting needs artificial excitation's seismic event, reflection wave by collection analysis seismic event in the transmitting procedure of stratum, and utilize the various parameters of the seismic event excite, thus jointly infer structure and the character that obtains stratum, explain the possibility that oil, rock gas exist.Along with the continuous progress of technology, people require more and more higher for the resolution of stratal configuration and nature of ground, and then are also that requirement is more and more higher for the quality of the quality signals of institute's earthquake-wave-exciting signal.
One of important means of artificial excitation's seismic event is for utilizing earthquake controllable earthquake focus system earthquake-wave-exciting.Fig. 1 shows the system construction drawing of vibroseis vibrational system.As shown in Figure 1, earthquake controllable earthquake focus system comprises drive unit S1, hydraulic efficiency servo-valve S3, hydraulic system S2, controlled source vibrator S4.In earthquake controllable earthquake focus system, hydraulic efficiency servo-valve S3 controls fluid turnover controlled source vibrator.Under the control of hydraulic efficiency servo-valve S3, the fluid of drive unit S1 drive hydraulic system principle S2 is by hydraulic efficiency servo-valve S3 and enter into controlled source vibrator S4.The oscillating component of vibroseis vibrational system is a part of parts and the hydraulic efficiency servo-valve S3 in controlled source vibrator S4.Fluid acts on oscillating component by the driving force of conduction drive unit S1, promotes oscillating component and carries out vertical vibration, and then produce seismic event.In order to reach the quality requirements that improves oscillating component requirement earthquake-wave-exciting signal, vertical vibration part needs to get rid of horizontal direction as far as possible and disturbs in vibration processes.Otherwise, if oscillating component suffered interference in vibration processes can produce adverse influence to the quality of the quality signals of institute's earthquake-wave-exciting signal.For example oscillating component is in vertical vibration process, if be subject to the interference of horizontal direction, described interference can affect the vertical vibration of oscillating component, and then affects the quality of vertical vibration institute earthquake-wave-exciting signal.
At present, controlled source vibrator is conventional piston formula Vib..Fig. 4 show conventional piston formula Vib. structural drawing and with the annexation of hydraulic efficiency servo-valve 4.As shown in Figure 4, traditional piston type Vib. comprises upper end cover 1, technique oil duct 2, upper hydraulic pressure oil duct 3.1, lower hydraulic pressure oil duct 3.2, technique oil duct 5, retroaction base plate 6, column 7, hammer body 8, upper hydraulic fluid chamber 9.1, lower hydraulic fluid chamber 9.2, piston rod 10.1, piston 10.2, piston bush 11, necking down 12.1, necking down 12.2, oilhole 13.1, oilhole 13.2, high-pressure oil duct 14, low pressure oil duct 15.Hammer body 8 is a rectangle block, and weight generally surpasses 4000 kilograms, and there is a through hole at center, and the xsect of through hole is circular.As shown in Figure 4, AA' line shows the center line of this through hole.Hammer body 8 one sides are provided with hydraulic efficiency servo-valve 4, and hydraulic efficiency servo-valve 4 is communicated with by high-pressure oil duct 14, low pressure oil duct 15 and hydraulic system etc.In the round tube hole of described hammer body 8, be provided with piston 10.2 and piston rod 10.1.Piston 10.2 and piston rod 10.1 are right cylinder, and piston rod 10.1 comprises the symmetrical two parts that are distributed in piston 10.2 two ends, upper and lower end face, and piston rod 10.1 upper ends are fixed on upper end cover 1, and lower end is fixed on retroaction base plate 6.Piston 10.2 diameters and through hole mid diameter on hammer body 8 equate and are greater than the diameter of piston rod 10.1.On piston rod 10.1, have and be distributed in the necking down 12.1 on piston rod top and the necking down 12.2 of bottom.The upper and lower two ends of through hole of hammer body 8 are fixed with respectively piston bush 11, limit the range of movement of piston 10.2 for righting.Piston bush 11 is hollow cylinder, interior diameter and piston rod 10.1 equal diameters, and its cross-sectional area equates with the xsect at the upper and lower two ends of described through hole and the area difference between piston rod 10.1 xsects.Piston bush Shang Xia 11 two parts offer respectively oilhole 13.1 and oilhole 13.2.Oilhole 13.1 is connected with necking down 12.1, and oilhole 13.2 is connected with necking down 12.2.The right and left in the longitudinal profile, center line AA ' place of hammer body 8 offers two columniform open-works, is inserted with respectively the column 7 that hammer body is played to centralizing function in open-work.About equally, column 7 upper ends are fixed on upper end cover 1 diameter of the described open-work of column 7 diameters and hammer body 8, and lower end is fixed on retroaction base plate 6.Described column 7 can move up and down with respect to hammer body in open-work.The space that hammer body 8, piston 10.2 and piston rod 10.1 thereof and piston bush 11 surround is working oil chamber, comprises hydraulic fluid chamber 9.1 and lower hydraulic fluid chamber 9.2, and described working oil chamber xsect is annular.Upper hydraulic fluid chamber 9.1 is connected with necking down 12.1.Lower hydraulic fluid chamber 9.2 is connected with necking down 12.2.Hammer body 8 one sides have oil duct, comprise technique oil duct 2, technique oil duct 5, upper hydraulic pressure oil duct 3.1, lower hydraulic pressure oil duct 3.2, high-pressure oil duct 14, low pressure oil duct 15.Technique oil duct 2 is offered hydraulic pressure oil duct 3.1 and is offered by meeting, and technique oil duct 5 is offered for meeting time hydraulic pressure oil duct 3.2.Two 90 ° of transition sections of upper hydraulic pressure oil duct 3.1 inner existence, one end is communicated with oilhole 13.1, and the other end is connected with hydraulic efficiency servo-valve 4.Two 90 ° of transition sections of lower hydraulic pressure oil duct 3.2 inner existence, one end is communicated with oilhole 13.2, and the other end is connected with hydraulic efficiency servo-valve 4.Fluid enters into hydraulic fluid chamber 9.1 from hydraulic efficiency servo-valve 4 need to pass through upper hydraulic pressure oil duct 3.1, oilhole 13.1 successively, and horizontal oil-feed is to necking down 12.1, and then the upper hydraulic fluid chamber 9.1 of arrival.Fluid enters into hydraulic fluid chamber 9.2 from hydraulic efficiency servo-valve 4 need to pass through lower hydraulic pressure oil duct 3.2, oilhole 13.2 successively, and horizontal oil-feed is to necking down 12.2, and then hydraulic fluid chamber 9.2 under arriving.Fig. 5 is conventional piston formula Vib. part side view, can find out that high-pressure oil duct 14 and low pressure oil duct 15 are distributed in hammer body 8 both sides, front and back, and have certain distance X with hammer body 8 center line AA ' in conjunction with Fig. 4.The fluid that high-pressure oil duct 14 is driven by drive unit for input, one end is connected with hydraulic efficiency servo-valve 4, and the other end is connected with manifold.The fluid that low pressure oil duct 15 is discharged by working oil chamber for output, one end is connected with hydraulic efficiency servo-valve 4, and the other end is connected with manifold.Described manifold is all fixed on hammer body one side.The oscillating component of conventional piston formula Vib. comprises hydraulic efficiency servo-valve 4, hammer body 8, piston bush 11 and is connected to the part manifold on hydraulic efficiency servo-valve 4.Vib. upper end cover 1, piston rod 10.1, piston 10.2, retroaction base plate 6 and column 7 are fixed.In working oil chamber, be filled with fluid.
During work, by pressure-acting, the fluid in fluid drive hydraulic system principle moves to high-pressure oil duct 14 to drive unit, high-pressure oil duct 14 is delivered to hydraulic efficiency servo-valve 4 by fluid, under the input and output of the control conventional piston formula Vib. inner fluid of hydraulic efficiency servo-valve 4, complete respectively upwards vibration and the vibration downwards of oscillating component.In completing the process of upwards vibration, hydraulic efficiency servo-valve 4 is controlled fluid and is input to hydraulic pressure oil duct 3.1, and enters into upper hydraulic fluid chamber 9.1 by oilhole 13.1, necking down 12.1.The pressure of fluid will act on piston 10.2 upper surfaces 10.21 and piston bush 11 lower surfaces 11.1 simultaneously.Because piston rod 10.1 and piston 10.2 maintain static, under the pressure of fluid promotes, upper end piston bush 11 moves upward.Piston bush 11 is fixed on hammer body 8 upper ends, and upper end piston bush 11 drives hammer body 8 to move upward simultaneously.Along with moving upward of upper end piston bush 11 and hammer body 8, upper hydraulic fluid chamber 9.1 becomes large, and lower hydraulic fluid chamber 9.2 diminishes.In lower hydraulic fluid chamber 9.2, original fluid arrives hydraulic efficiency servo-valve 4 by necking down 12.2, oilhole 13.2, lower hydraulic pressure oil duct 3.2 successively, and last hydraulic efficiency servo-valve 4 is input to low pressure oil duct 15 by fluid and discharges.And then complete the upwards vibration of oscillating component.In completing the process of downward vibration, hydraulic efficiency servo-valve 4 is controlled fluid and is input to lower hydraulic pressure oil duct 3.2, and by oilhole 13.2, necking down 12.2, entering into lower hydraulic fluid chamber 9.2, the pressure of fluid will act on the lower surface 10.22 of piston 10.2 and the upper surface 11.2 of piston bush 11 simultaneously.Because piston rod 10.1 and piston 10.2 maintain static, under the pressure of fluid promotes, lower end piston bush 11 moves downward.Lower end piston bush 11 is fixed on hammer body 8 through hole lower ends, and lower end piston bush 11 drives hammer body 8 to move downward simultaneously, and hydraulic fluid chamber 9.1 is diminished.The fluid of wherein going up in hydraulic fluid chamber 9.1 arrives hydraulic efficiency servo-valve 4 by necking down 12.1, oilhole 13.1, upper hydraulic pressure oil duct 3.1 successively, and last hydraulic efficiency servo-valve 4 is input to low pressure oil duct 15 by fluid and discharges.And then complete the downward vibration of oscillating component.
In above-mentioned prior art in conjunction with Fig. 4, Fig. 5, high-pressure oil duct 14 fluid produce acting force at flex point P place to oscillating component, there is distance X in described acting force and hammer body center line, and then piston rod is formed to rotating torque, this rotating torque can make the structure generation horizontal applied forces such as oscillating component column, described horizontal applied force produces the interference of horizontal direction to the vertical vibration of oscillating component, and then, affect the quality of vertical vibration institute earthquake-wave-exciting signal.
Summary of the invention
One object of the present invention is to provide a kind of controlled source vibrator and system, to reduce the interference of the horizontal direction that oscillating component is subject in vertical vibration process.
For achieving the above object, a kind of controlled source vibrator provided by the invention, it is characterized in that: comprise upper end cover, upper hydraulic pressure oil duct, lower hydraulic pressure oil duct, retroaction base plate, column, hammer body, upper hydraulic fluid chamber, lower hydraulic fluid chamber, piston rod, piston, piston bush, the center of hammer body offers a through hole, the upper and lower two ends of through hole are installed with respectively piston bush, in the through hole of hammer body, be provided with piston rod and piston, the xsect of through hole is identical with piston maximum cross section, the center of piston bush offers a penetrating hole, the xsect in penetrating hole is identical with piston rod xsect, wherein, upper hydraulic pressure oil duct and the design of lower hydraulic pressure oil duct are in the inside of piston rod inside and piston, upper hydraulic pressure oil duct one end is for being connected with hydraulic efficiency servo-valve, the other end of upper hydraulic pressure oil duct is for communicating with upper hydraulic fluid chamber, lower hydraulic pressure oil duct one end is connected with hydraulic efficiency servo-valve, and the lower hydraulic pressure oil duct other end communicates with lower hydraulic fluid chamber.
Above-mentioned a kind of controlled source vibrator also adopts following scheme:
On described upper end cover, be also provided with the interface that hydraulic efficiency servo-valve is installed.
Described hammer body is rectangle block.
Described through hole xsect is circular.
Described penetrating hole xsect is circular.
The present invention also provides a kind of earthquake controllable earthquake focus system, it is characterized in that: comprise drive unit, hydraulic system, hydraulic efficiency servo-valve and controlled source vibrator, wherein hydraulic efficiency servo-valve level is fixedly mounted on the upper end cover of controlled source vibrator, and,
Described controlled source vibrator, comprise upper end cover, upper hydraulic pressure oil duct, lower hydraulic pressure oil duct, retroaction base plate, column, hammer body, upper hydraulic fluid chamber, lower hydraulic fluid chamber, piston rod, piston, piston bush, the center of hammer body offers a through hole, the upper and lower two ends of through hole are installed with respectively piston bush, in the through hole of hammer body, be provided with piston rod and piston, the xsect of through hole is identical with piston maximum cross section, the center of piston bush offers a penetrating hole, the xsect in penetrating hole is identical with piston rod xsect, wherein, upper hydraulic pressure oil duct and the design of lower hydraulic pressure oil duct are in the inside of piston rod inside and piston, upper hydraulic pressure oil duct one end is for being connected with hydraulic efficiency servo-valve, the other end of upper hydraulic pressure oil duct is for communicating with upper hydraulic fluid chamber, lower hydraulic pressure oil duct one end is connected with hydraulic efficiency servo-valve, and the lower hydraulic pressure oil duct other end communicates with lower hydraulic fluid chamber.
Above-mentioned a kind of earthquake controllable earthquake focus system also adopts following scheme:
On described upper end cover, be also provided with the interface that hydraulic efficiency servo-valve is installed.
Described hammer body is rectangle block.
Described through hole xsect is circular.
Described penetrating hole xsect is circular.
The invention has the beneficial effects as follows:
1, by piston rod oil inside offering mode, cancelled at the inner processing of hammer body oil duct, oscillating component can be to the piston rod moment that rotates, eliminate the impact that described rotating torque is brought, effectively reduced the interference of horizontal direction in vibration processes, improved the quality of earthquake-wave-exciting signal.
2, hammer body inside does not need to process oil duct, and hammer body through hole both sides are equal in weight, and then reduces the interference of the horizontal direction that oscillating component is subject in vertical vibration process.Hammer body need to not offered oil duct in inside simultaneously, has greatly reduced the difficulty of processing of hammer body.
3, hydraulic efficiency servo-valve is not arranged on hammer body one side, and the weight for oscillating component about through hole both sides does not exert an influence; Hydraulic efficiency servo-valve is no longer with hammer body vertical vibration together, and hydraulic servo valve core is not subject to the impact of vertical vibration.Meanwhile, when calculating oscillating component weight, no longer need the manifold weight that connects in Elastic Vibration, improved the computational accuracy of oscillating component weight.
4, improved the suffered flow resistance of fluid.In vibration processes, in the hammer body of fluid in conventional vibrator, need through 4 transition sections, in inside of the present invention, need to greatly reduce the flow resistance of too much bringing because of transition section through 2, further improved the quality of excitation signal.
Accompanying drawing explanation
Fig. 1 is that prior art earthquake controllable earthquake focus system forms schematic diagram;
Fig. 2 is the structure cut-open view of embodiment of the present invention;
Fig. 3 is the connection layout of embodiment of the present invention and hydraulic efficiency servo-valve;
Fig. 4 is conventional piston formula vibrator structure figure;
Fig. 5 is conventional piston formula Vib. part side view.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, should belong to the scope of protection of the invention.
A kind of embodiment of a kind of controlled source vibrator of following paper the present invention.Fig. 2 is the diagrammatic cross-section of the embodiment of the present invention.A kind of a kind of embodiment of controlled source vibrator comprises: upper end cover 1, upper hydraulic pressure oil duct 3.1, lower hydraulic pressure oil duct 3.2, retroaction base plate 6, column 7, hammer body 8, upper hydraulic fluid chamber 9.1, lower hydraulic fluid chamber 9.2, piston rod 10.1, piston 10.2, piston bush 11.On upper end cover 1, be provided with the interface that hydraulic efficiency servo-valve 4 is installed.Fig. 3 shows the annexation of hydraulic efficiency servo-valve 4 and the embodiment of the present invention.As shown in Figure 3, hydraulic efficiency servo-valve 4 is fixedly mounted on upper end cover 1, and hydraulic efficiency servo-valve 4 is connected with manifold.Hammer body 8 is a steel rectangle block, and there is a through hole at center, and through hole xsect is circular, and AA' as shown in Figure 2 shows the center line of this through hole.Described through hole two ends are installed with two piston bushes 11, and a penetrating hole is offered at piston bush 11 centers, and penetrating hole xsect is circular, the upper and lower two ends of the overall diameter of piston bush 11 and through hole equal diameters.In the through hole of described hammer body 8, be provided with piston rod 10.1 and piston 10.2.Piston rod 10.1 comprises the symmetrical two parts that are distributed in piston both ends of the surface Shang Xia 10.2.The diameter of piston rod 10.1 equates with the interior diameter of piston bush 11.The maximum cross section of piston 10.2 equates with the xsect of hammer body 8 through holes.The xsect of piston rod 10.2 is identical with the penetrating hole xsect of piston bush 11.Two the symmetrical working oil chambers that are distributed in piston both ends of the surface Shang Xia 10.2 that hammer body 8, piston bush 11, piston rod 10.1 and piston 10.2 surround, hydraulic fluid chamber 9.1 on the working oil chamber between piston 10.2 upper surfaces 10.21 and upper end piston bush 11 lower surfaces 11.1 is, the working oil chamber between piston 10.2 lower surfaces 10.22 and lower end piston bush 11 upper surfaces 11.2 is lower hydraulic fluid chamber 9.2.Piston rod 10.1 and piston 10.2 inside are processed with elongated hydraulic pressure oil duct, go up hydraulic pressure oil duct 3.1, lower hydraulic pressure oil duct 3.2.Upper hydraulic pressure oil duct 3.1 is with hammer body center line AA ' in a vertical plane, and lower hydraulic pressure oil duct 3.2 and hammer body center line AA ' are in a vertical plane.Upper hydraulic pressure oil duct 3.1 is located at piston rod 10.1 the first half inside and piston 10.2 inside, and upper hydraulic pressure oil duct 3.1 one end are communicated with upper hydraulic fluid chamber 9.1, and the other end is directly connected with hydraulic efficiency servo-valve 4.Lower hydraulic pressure oil duct 3.2 is located at piston rod 10.1 the first half inside and piston 10.2 inside, and lower hydraulic pressure oil duct 3.2 one end are communicated with lower hydraulic fluid chamber 9.2, and the other end is directly connected with hydraulic efficiency servo-valve 4.The right and left of the transverse section, center line AA ' place of hammer body 8 offers two columniform open-works, is inserted with respectively column 7 in open-work.The diameter of column 7 and open-work equal diameters.Column 7 upper ends and piston rod 10.1 upper ends are fixed on upper end cover 1.Column 7 lower ends and piston-rod lower end are fixed on retroaction base plate 6.In conjunction with Fig. 2, can find out that oscillating component comprises: hammer body 8, piston bush 11.The manifold that upper end cover 1, column 7, piston rod 10.1, piston 10.2, hydraulic efficiency servo-valve 4 and hydraulic efficiency servo-valve connect is fixed.Working oil chamber inside is full of fluid.
During work, drive unit is the motion of the fluid in fluid drive hydraulic system principle by pressure-acting, by hydraulic efficiency servo-valve 4, controls the input and output of controlled source vibrator inner fluid, completes respectively upwards vibration and the vibration downwards of oscillating component.At oscillating component, make progress in vibration processes, hydraulic efficiency servo-valve 4 is controlled the upper hydraulic pressure oil duct 3.1 of fluid input, then enters into hydraulic fluid chamber 9.1.The pressure of fluid will act on piston 10.2 upper surfaces 10.21 and upper end piston bush 11 lower surfaces 11.1 simultaneously, because piston rod 10.1 and piston 10.2 maintain static.Under the pressure of fluid promotes, piston bush 11 moves upward.Piston bush 11 drives hammer body 8 to move upward simultaneously, and lower hydraulic fluid chamber 9.2 is diminished, and the fluid in lower hydraulic fluid chamber 9.2, by lower hydraulic pressure oil duct 3.2, enters into hydraulic efficiency servo-valve 4 and discharges.And then complete the upwards vibration of oscillating component.In the downward vibration processes of oscillating component, hydraulic efficiency servo-valve 4 is controlled fluid by lower hydraulic pressure oil duct 3.2, enters into lower hydraulic fluid chamber 9.2.The pressure of fluid will act on the lower surface 10.22 of piston 10.2 and the upper surface 11.2 of lower end piston bush 11 simultaneously.Because piston rod 10.1 and piston 10.2 maintain static, under the pressure of fluid promotes, piston bush 11 moves downward, and piston bush 11 drives hammer body 8 to move downward simultaneously, and hydraulic fluid chamber 9.1 is diminished.Fluid in upper hydraulic fluid chamber 9.1, by upper hydraulic pressure oil duct 3.1, enters into hydraulic efficiency servo-valve 4 and discharges.And then complete the downward vibration of oscillating component.
For the controlled source vibrator with above-described embodiment structure, by the change of oil-feed mode, reach the object that reduces the interference of horizontal direction in oscillating component vertical vibration process.
First, in the above-described embodiments, by piston rod and internal piston, offer oil duct, need to be at hammer body inner processing high-pressure oil duct and low pressure oil duct, avoided fluid to make oscillating component produce acting force and form rotating torque piston rod, and then reach the interference of the horizontal direction that reduction brings, finally improve the quality of institute's earthquake-wave-exciting signal.
Secondly, the controlled source vibrator with above-described embodiment structure has not only been avoided offering technique oil duct in hammer body inside, reduce greatly hammer body difficulty of processing, oscillating component in the present embodiment is symmetrical structure as seen in Figure 2, so just can guarantee that oscillating component is equal in weight about through hole both sides, can eliminate the interference of the horizontal direction forming because oscillating component does not wait about through hole both sides weight in oscillating component vertical vibration process, improve the quality of institute's earthquake-wave-exciting signal.
Then, the controlled source vibrator with above-described embodiment structure, can also avoid hydraulic efficiency servo-valve to be arranged on hammer body one side, so both eliminated because hydraulic efficiency servo-valve and the manifold that is connected with hammer body are arranged on the problem that affects oscillating component centre-of gravity shift that hammer body one side is brought, also helped accurately determining of oscillating component quality.
Fluid can be subject to flow resistance when through transition section, and flow resistance can reduce the driving force of the drive unit of fluid conduction, the pressure that acts on oscillating component is reduced, and then affect the vibration of oscillating component, finally reduces the quality of institute's earthquake-wave-exciting signal.Between can finding out from hydraulic efficiency servo-valve to working oil chamber in conjunction with Fig. 3, there are 2 transition sections, compare with conventional piston formula Vib. (transition section that can find out conventional piston formula Vib. in Fig. 4 has 4), in the process of fluid turnover Vib., a plurality of transition sections have been reduced, improve largely the flow resistance problems of bringing because transition section is too much, improved the quality of institute's earthquake-wave-exciting signal.
A kind of embodiment that finally introduces a kind of earthquake controllable earthquake focus system of the present invention, Fig. 1 shows earthquake controllable earthquake focus system composition diagram.As shown in Figure 1, a kind of embodiment of earthquake controllable earthquake focus system comprises: drive unit S1, hydraulic system S2, hydraulic efficiency servo-valve S3, controlled source vibrator S4.Fig. 2 shows the structure of controlled source vibrator S4.Described controlled source vibrator S4 has the structure of above-mentioned controlled source vibrator embodiment.Fig. 3 shows the annexation of hydraulic efficiency servo-valve S3 and controlled source vibrator S4.As shown in Figure 3, hydraulic efficiency servo-valve S3 level is fixedly mounted on the upper end cover of controlled source vibrator S4.
In the embodiment of earthquake controllable earthquake focus system, hydraulic efficiency servo-valve S3 controls fluid turnover controlled source vibrator S4.Under the control of hydraulic efficiency servo-valve S3, the fluid of drive unit S1 drive hydraulic system principle S2 is by hydraulic efficiency servo-valve S3 and enter into controlled source vibrator S4.The oscillating component of vibroseis vibrational system is a part of parts in controlled source vibrator S4.Fluid acts on oscillating component by the driving force of conduction drive unit S1, promotes oscillating component vibration, and then produces seismic event.
Adopt the earthquake controllable earthquake focus system of above-described embodiment structure, oscillating component is only a part of controlled source vibrator S4, high-pressure oil duct and the design of low pressure oil duct are outside at hammer body, can not produce the rotating torque in conventional piston formula vibrator works process, effectively reduce the disturbing factor in the earthquake controllable earthquake focus system course of work; The manifold vibration of also having avoided conventional piston formula Vib. to drive hydraulic efficiency servo-valve S3 simultaneously and being connected with hammer body, the manifold of having eliminated hydraulic efficiency servo-valve S3 and being connected with the hammer body impact that vibration brings on controlled source vibrator S4, the quality of raising earthquake controllable earthquake focus system earthquake-wave-exciting signal.Meanwhile, hydraulic efficiency servo-valve S3 level is fixedly mounted on the upper press cover of controlled source vibrator S4, makes hydraulic efficiency servo-valve S3 no longer with oscillating component vertical vibration, and then, make the spool of hydraulic efficiency servo-valve S3 not be subject to the impact of vertical vibration.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.
Claims (10)
1. a controlled source vibrator, it is characterized in that: comprise upper end cover, upper hydraulic pressure oil duct, lower hydraulic pressure oil duct, retroaction base plate, column, hammer body, upper hydraulic fluid chamber, lower hydraulic fluid chamber, piston rod, piston, piston bush, the center of hammer body offers a through hole, the upper and lower two ends of through hole are installed with respectively piston bush, in the through hole of hammer body, be provided with piston rod and piston, the xsect of through hole is identical with piston maximum cross section, the center of piston bush offers a penetrating hole, the xsect in penetrating hole is identical with piston rod xsect, wherein, upper hydraulic pressure oil duct and the design of lower hydraulic pressure oil duct are in the inside of piston rod inside and piston, upper hydraulic pressure oil duct one end is for being connected with hydraulic efficiency servo-valve, the other end of upper hydraulic pressure oil duct is for communicating with upper hydraulic fluid chamber, lower hydraulic pressure oil duct one end is connected with hydraulic efficiency servo-valve, and the lower hydraulic pressure oil duct other end communicates with lower hydraulic fluid chamber.
2. controlled source vibrator as claimed in claim 1, is characterized in that: on described upper end cover, be also provided with the interface that hydraulic efficiency servo-valve is installed.
3. controlled source vibrator as claimed in claim 1, is characterized in that: described hammer body is rectangle block.
4. controlled source vibrator as claimed in claim 1, is characterized in that: described through hole xsect is for circular.
5. controlled source vibrator as claimed in claim 1, is characterized in that: described penetrating hole xsect is for circular.
6. an earthquake controllable earthquake focus system, is characterized in that: comprise drive unit, hydraulic system, hydraulic efficiency servo-valve and controlled source vibrator, wherein hydraulic efficiency servo-valve level is fixedly mounted on the upper end cover of controlled source vibrator, and,
Described controlled source vibrator, comprise upper end cover, upper hydraulic pressure oil duct, lower hydraulic pressure oil duct, retroaction base plate, column, hammer body, upper hydraulic fluid chamber, lower hydraulic fluid chamber, piston rod, piston, piston bush, the center of hammer body offers a through hole, the upper and lower two ends of through hole are installed with respectively piston bush, in the through hole of hammer body, be provided with piston rod and piston, the xsect of through hole is identical with piston maximum cross section, the center of piston bush offers a penetrating hole, the xsect in penetrating hole is identical with piston rod xsect, wherein, upper hydraulic pressure oil duct and the design of lower hydraulic pressure oil duct are in the inside of piston rod inside and piston, upper hydraulic pressure oil duct one end is for being connected with hydraulic efficiency servo-valve, the other end of upper hydraulic pressure oil duct is for communicating with upper hydraulic fluid chamber, lower hydraulic pressure oil duct one end is connected with hydraulic efficiency servo-valve, and the lower hydraulic pressure oil duct other end communicates with lower hydraulic fluid chamber.
7. earthquake controllable earthquake focus system as claimed in claim 6, is characterized in that: on described upper end cover, be also provided with the interface that hydraulic efficiency servo-valve is installed.
8. earthquake controllable earthquake focus system as claimed in claim 6, is characterized in that: described hammer body is rectangle block.
9. earthquake controllable earthquake focus system as claimed in claim 6, is characterized in that: described through hole xsect is for circular.
10. earthquake controllable earthquake focus system as claimed in claim 6, is characterized in that: described penetrating hole xsect is for circular.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104749614A (en) * | 2015-04-09 | 2015-07-01 | 北京中矿大地地球探测工程技术有限公司 | Movable underground vibroseis device and control system thereof |
| CN105467431A (en) * | 2016-01-08 | 2016-04-06 | 吉林大学 | Controllable seismic source excitation power head in electro-hydraulic servo well |
| WO2017024527A1 (en) * | 2015-08-11 | 2017-02-16 | 深圳朝伟达科技有限公司 | Precisely adjustable pre-stressing structure for vibroseis vibrator plate and method of use therefor |
| CN107037478A (en) * | 2017-06-06 | 2017-08-11 | 中国地质大学（北京） | A kind of Novel vibrator |
| CN107526100A (en) * | 2017-08-02 | 2017-12-29 | 中国石油天然气集团公司 | The prestressed structure of vibrator |
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| CN109116408A (en) * | 2018-10-20 | 2019-01-01 | 西南石油大学 | A kind of shear wave source vibrator for seismic prospecting |
| CN111896998A (en) * | 2019-05-06 | 2020-11-06 | 中国石油天然气集团有限公司 | Vibroseis vehicle monitoring method and device |
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| CN111896999A (en) * | 2019-05-06 | 2020-11-06 | 中国石油天然气集团有限公司 | Vibrator and vibration signal control method |
| CN111896998B (en) * | 2019-05-06 | 2024-03-01 | 中国石油天然气集团有限公司 | Controllable source vehicle monitoring method and device |
| CN112526595A (en) * | 2019-12-28 | 2021-03-19 | 吉林大学 | Automatic pressing plate mechanism and controllable seismic source |
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