CN105178845A - Hydraulic impact generating device - Google Patents
Hydraulic impact generating device Download PDFInfo
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- CN105178845A CN105178845A CN201510617166.2A CN201510617166A CN105178845A CN 105178845 A CN105178845 A CN 105178845A CN 201510617166 A CN201510617166 A CN 201510617166A CN 105178845 A CN105178845 A CN 105178845A
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 54
- 239000011148 porous material Substances 0.000 claims description 26
- 238000013016 damping Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 73
- 238000005553 drilling Methods 0.000 description 60
- 238000009527 percussion Methods 0.000 description 18
- 230000000694 effects Effects 0.000 description 16
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
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Abstract
The invention provides a hydraulic shock generating device. The piston comprises a first sleeve, a first joint, a second sleeve, a piston, a first isolating ring, a second isolating ring and a valve assembly. The piston is positioned in a second cavity of the second sleeve and can slide along the long axis direction of the first sleeve, and the piston comprises a body extending along the long axis direction of the first sleeve and a convex part protruding along the radial direction of the first sleeve; the first isolating ring is fixedly arranged in the second cavity of the second sleeve and sleeved at the second end of the piston body, so that a second cavity is formed; the second isolating ring is fixedly arranged in a second cavity of the second sleeve and sleeved at the first end of the piston body, so that a third chamber is formed. Through be provided with in the device not with the drive cavity that the annular space that surge impact generating device surface and well wall of a well constitute is linked together, the effectual problem of foreign matter in the well is inhaled impact generating device inside has been solved, has avoided the foreign matter to block valve body or piston to and the wearing and tearing of valve body or piston.
Description
Technical field
The invention belongs to oil-well rig technical field, particularly relate to a kind of hydraulical impact generating means.
Background technology
Often comparatively hard formation can be run in oil/gas drilling process; now the drilling efficiency of drill bit is lower; in order to improve the efficiency of breaking rock of drill bit at firm hard formation, usually installing on drill bit and impacting generating means to provide the impact of high frequency amplitude, realizing the volumetric fracture of drill bit impact tooth formation rock.
Applying maximum impact generating means in field of oil drilling research is air hammer and hydraulic impact tool, wherein hydraulic impact tool uses face wider relatively, the time that this technology is applied at home is also longer, but it still also exists a lot of problem, as: Chinese patent ZL85202387U discloses a kind of oil drilling double acting hydraulic impacting device, this device adopts valve body to realize the switching of flow direction, can reduce fluid liquidate percussion generating apparatus erosion effect, be applicable to oil huge discharge operating environment, but the low-pressure chamber of this impact generating means is directly connected with the annular space that drilling tool external surface and the well borehole wall form, foreign matter during work in easy suction well, as landwaste, formation fluid etc., these foreign matters easily block valve body or piston, accelerate the wearing and tearing of valve body or piston, make not reach the condition of Economic Application the application life of impactor.
Summary of the invention
For above-mentioned deficiency of the prior art, the embodiment of the present invention provides a kind of hydraulical impact generating means, efficiently solve the problem that foreign matter in well is inhaled into percussion generating means inside, avoid foreign matter and block valve body or piston, and the wearing and tearing of valve body or piston.
The invention provides a kind of hydraulical impact generating means, it comprises, the first sleeve, and it has along the relative first end of its long axis direction and the second end, and described first sleeve has along the first through cavity of long axis direction, first joint, it is arranged on the first end of described first sleeve, and described joint is provided with the first through hole with described first cavity connects, second sleeve, its fixed cover is located in described first sleeve, the outer wall of described second sleeve and the inwall of described first sleeve form the first chamber, described first chamber is closed towards the first end of described first sleeve, and described first sleeve has along the second through cavity of the long axis direction of described first sleeve, piston, it is positioned at the second cavity of described second sleeve, and can slide along the long axis direction of described first sleeve by relatively described second sleeve, described piston comprises the body that the long axis direction along described first sleeve extends, along the lug boss that the long axis direction perpendicular to described first sleeve protrudes, the lug boss of described piston and the inwall of described second sleeve match, described body has along the 3rd through cavity of the long axis direction of described first sleeve, described body is provided with throttling arrangement in the 3rd cavity of the second end of described first sleeve, 3rd chamber of described body towards the second end of described first sleeve one end can with described first chamber, first shading ring, it is installed in the second cavity of described second sleeve, and be set in the second end of the body of described piston, thus form the second chamber with described second sleeve, described piston, described piston offers the second intercommunicating pore by described 3rd cavity and described second chamber, and the more described throttling arrangement of described second intercommunicating pore is near the first end of described first sleeve, second shading ring, it is installed in the second cavity of described second sleeve, and be set in the first end of the body of described piston, thus form the 3rd chamber with described second sleeve, described piston, described second sleeve offers and described 3rd chamber first intercommunicating pore, valve module, it is arranged in described first sleeve, and between described joint and described piston, described valve module comprises pedestal valve body, described pedestal offers the runner with the second cavity connects of the first through hole of described first joint and described second sleeve, described valve body can engage with the first end of described piston, thus the 3rd cavity of described piston and the runner of described pedestal are disconnected.
Further, described first sleeve, described second sleeve, described piston coaxial are arranged.
Further, described first cavity is positioned at the center of described first sleeve, and described second cavity is positioned at the center of described second sleeve, and described 3rd cavity is positioned at the center of described piston, and the delivery port of described throttling arrangement is positioned at the center of described piston.
Further, the sidewall of described piston is provided with the groove be communicated with described second intercommunicating pore, described hydraulical impact generating means has at least one operating position, when relatively described second sleeve of described piston from the first end of the first sleeve to the second end motion time, the cavity connects of described groove and described first sleeve.
Further, described second sleeve is provided with and can props up the step of the second shading ring towards one end of the first end of described first sleeve.
Further, the valve body slides of described valve module is set in described pedestal, is provided with the first damping unit between described pedestal and described valve body.
Further, described hydraulical impact generating means also comprises the second damping unit and is set in the first block in described first sleeve, described first block can lean with the pedestal of described second sleeve and/or described valve module towards one end of the second end of described first sleeve, and described first block is abutted against towards one end of the first end of described first sleeve mutually with described second damping unit.
Further, described valve body has pressure-bearing portion at its first end towards described first sleeve, form the pressure pocket of isolating with the runner of described pedestal between described pedestal and described pressure-bearing portion, described pedestal is provided with for the third connecting hole by described pressure pocket and described first chamber.
Further, the dynamic sealing device that at least two groups are arranged along the long axis direction of described first sleeve is provided with between described pedestal and described valve body.
Further, described hydraulical impact generating means also comprises the second block abutted with described second shading ring and described pedestal respectively.
Further, described piston has when described piston engages with described valve body for bearing the load portion of the active force of the liquid that described runner flows into, and at least part of described load portion is towards described pedestal.
Hydraulical impact generating means of the present invention, by being provided with the driving chamber that the annular space that do not form with drilling tool external surface and the well borehole wall is connected in device, and by arranging fluid passage and chamber, driving chamber is connected with the pressure fluid of device inside, make to drive the pressure fluid in chamber application apparatus to carry out the motion of driven plunger, thus completely cut off the contact of fluid in chamber and bore hole annulus, effectively solve foreign matter in well and be inhaled into the problem of percussion generating means inside, avoid foreign matter and block valve body or piston, accelerate the wearing and tearing of valve body or piston, thus improve operational reliability and the application life of instrument.
As the technique effect that the present invention adds, the cavity of the first joint, piston centre chamber are emptying passage, are suitable for oil/gas drilling huge discharge drilling condition; Be provided with the first damping unit and the pressure pocket of damper piston percussion in valve module, thus valve module is subject to the relatively little of the percussion of piston, can further improve the stability of instrument.
Accompanying drawing explanation
Fig. 1: be the structural representation of hydraulical impact generating means of the present invention;
Fig. 2: for hydraulical impact generating means of the present invention up time schematic diagram;
Fig. 3: for hydraulical impact generating means of the present invention descending time schematic diagram;
Fig. 4: be the partial structurtes schematic diagram of hydraulical impact generating means of the present invention.
1, the first sleeve; 11, the first cavity; 111, the first sleeve lining; 13, first end, 14, the second end; 2, the first joint; 21, the first through hole; 3, the second sleeve; 31, the second sleeve outer wall; 32, the second sleeve lining; 33, the second cavity; 4, the first chamber; 5, piston; 51, body; 52, the lug boss of piston; 53, the 3rd cavity; 54, throttling arrangement; 6, the first shading ring; 7, the second chamber; 8, the second intercommunicating pore; 9, the second shading ring; 10, the 3rd chamber; 101, the first intercommunicating pore; 12, valve module; 121, pedestal; 123, valve body; 1231, pressure-bearing portion; 1232, pressure pocket; 124, runner; 15, third connecting hole; 161, the first damping unit; 162, the second damping unit; 171, the first block; 172, the second block; 18, dynamic sealing device; 19, step; 20, groove; 22, load portion; 23, drill bit assembly; 24, retaining ring; 25, joint ring; 26, the second joint; 27, drill hammer.
Detailed description of the invention
For the purposes of the present invention, technical scheme and advantage are clearly; clear, complete description is carried out below by technical scheme of the present invention; based on the specific embodiment of the present invention; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope that the present invention protects.
As shown in the Subgraph of Fig. 1 to 4, the hydraulical impact generating means provided in the present embodiment, this device comprises the first sleeve 1, first joint 2, second sleeve 3, piston 5, first shading ring 6, second shading ring 9, valve module 12.First sleeve 1, it has and has along the first through cavity 11 of long axis direction along the relative sleeve first end 13 of its long axis direction and the second end 14, first sleeve 1.First joint 2, its first end 13, first joint 2 being arranged on described first sleeve 1 is provided with the first through hole 21, first through hole 21 being substantially positioned at its center and is communicated with the first cavity 11.Second sleeve 3, its fixed cover is located in described first sleeve 1, and the first end that the outer wall 31 of the second sleeve 3 and the inwall 111 of the first sleeve 1 form the first chamber 4, first chamber 4 is closed, and the first sleeve 1 has the second cavity 33 being substantially positioned at its center.Piston 5, it is positioned at the second cavity 33 of the second sleeve 3, and can slide along the long axis direction of the first sleeve 1, piston 5 comprises the body 51 that the long axis direction along the first sleeve 1 extends, the lug boss 52 protruded along the long axis direction perpendicular to the first sleeve 1, and the lug boss 52 of piston 5 and the inwall 32 of the second sleeve 3 match.The center of piston only 51 offers the 3rd cavity 53, is provided with throttling arrangement 54 in the 3rd cavity 53 of piston only 51, and the second end of the 3rd cavity 53 can be communicated with described first chamber 4.First shading ring 6, it is installed in the second cavity 33 of the second sleeve 3, and is set in the second end of piston only 51, thus forms the second chamber 7; Piston 5 offers the second intercommunicating pore 8 be communicated with the 3rd cavity 53 near its second end 14 place, the second intercommunicating pore 8 of piston 5 is communicated with the second chamber 7, and the second intercommunicating pore 8 is compared with the first end of throttling arrangement 54 near piston 5.Second shading ring 9, it is installed in the second cavity 33 of the second sleeve 3, and be set in the first end of piston only 51, thus form the 3rd chamber 10, second sleeve 3 offers the first intercommunicating pore 101, second sleeve 3 the first intercommunicating pore 101 near the first end place of piston 5 can be communicated with the 3rd chamber 10.Valve module 12, it is arranged in the first sleeve 1, and between the first joint 2 and piston 5, valve module 12 comprises pedestal 121, valve body 123, pedestal 121 offers the runner 124 be communicated with the second cavity 33 of the second sleeve 3 with the first through hole 21 of the first joint 2; Valve body 123 can be suitable with the first end of piston 5, thus the 3rd cavity 53 of piston 5 is disconnected with the runner of pedestal 121.
As shown in the Subgraph of Fig. 1 to 3, the first sleeve 1 can be a cylindrical structure, the drilling fluid in hydraulical impact generating means and the fluid-phase in annular space is isolated.First sleeve 1 has first end 13 along its long axis direction and the second end 14.The first end 13 of the first sleeve 1 is connected with the first joint by screw thread, and the second end 14 of the first sleeve 1 is provided with screw thread to connect the second joint 26 on drill bit assembly 23.
As shown in the Subgraph of Fig. 1 to 3, the first joint 2 can be connected with drilling tool (as drilling rod, drill collar, heavy weight drill pipe etc.) by being provided with screw thread away from the first end 13 of the first sleeve 1.The center of the first joint 2 is provided with the first through hole 21, can pass through drilling well high-pressure fluid, for hydraulical impact generating means provides energy to input.One end of first joint 2 is connected by screw thread with the first end 13 of the first sleeve 1.The length of the first joint 2 can be determined according to underground work intensity, and the type of the screw thread of the first joint 2 can the screw thread of drilling tool selected by underground work be selected; Thread type can select conventional screw thread, also can select special thread, be not limited to the present embodiment.
As shown in the Subgraph of Fig. 1 to 3, the second sleeve 3 is a cylindrical structure, and it is located in the first sleeve 1 by screw fixed cover.Valve module 12 is fixed by screws on the second sleeve 3, and piston 5 can be set in the second sleeve 3 slidably, and the lateral wall of the second sleeve 3 is processed with seal groove, installs sealing ring in seal groove.5 one-tenth, piston wooden club shape, is divided into body 51 and lug boss 52.The distance of piston 5 up maximum position and descending maximum position in the second sleeve 3 is determined by the first shading ring 6 and the second shading ring 9 being arranged on piston 5 two ends, piston 5 matches with the inwall of the second sleeve 3, and then the second chamber 7 is not communicated with the 3rd chamber 10.
As shown in Figure 4, valve module 12 comprises pedestal 121 and valve body 123.Pedestal 121 can be a cylindrical structure, and pedestal 121 has the cavity with valve body 123 adaptation.Pedestal 121 has 3 ~ 8 runners 124 in axial distribution, runner 124 can uniform also can not be uniform, pass through for drilling fluid.Pedestal 121 is in distribution 1 ~ 6 third connecting hole 15, side, the shaft orientation flowing channel 124 of third connecting hole 15 on locus and pedestal 121 is isolated, and groove is processed with in the radial position of third connecting hole 15 distribution, the width of groove compares third connecting hole 15 internal diameter slightly greatly, and the degree of depth of groove is about 1 ~ 8mm.Valve body 123 is the part of a similar hat-shaped, and the part being set in pedestal 121 is a cylinder, and remaining part is boss, and the external diameter of boss is greater than the external diameter of cylinder.
For the ease of understanding, the course of work below with regard to this hydraulical impact generating means is described:
As shown in Figure 2, hydraulical impact generating means is now in the state of work, drilling fluid is by the first through hole 21 access to plant of the first joint 2, enter in the space between valve module 12 and piston 5 by the runner 124 of valve module 12, and then enter in the 3rd cavity 53 of piston 5, size and the pressure of drilling fluid can be controlled by the position and quantity arranging the runner 124 of valve module 12.Enter into drilling fluid in the 3rd cavity 53 through being arranged on the effect of the 3rd cavity 53 throttling arrangement 54, the pressure of the drilling fluid before throttling is greater than the pressure of drilling fluid after throttling; The inwall 111 of outer wall 31 and the first sleeve 1 that the drilling fluid after throttling enters into the second sleeve 3 is formed in the first chamber 4, piston 5 offers the second intercommunicating pore 8 be communicated with the 3rd cavity 53 near its second end place, second intercommunicating pore 8 of piston 5 is communicated with the second chamber 7, thus allows the drilling fluid before throttling enter into the second chamber 7.Second shading ring 9 is installed in the second cavity 33 of the second sleeve 3, and be set in the first end of the body 51 of piston 5, thus form the 3rd chamber 10, second sleeve 3 offers the first intercommunicating pore 101 near the first end place of piston 5 makes the first chamber 4 be communicated with the 3rd chamber 10, thus makes the drilling fluid after throttling enter into the 3rd chamber 10.Fluid pressure now in the second chamber 7 is greater than the 3rd chamber 10, under the effect of pressure differential, and piston 5 meeting up (as shown in Figure 3).When piston 5 is up to highest order, piston 5 coordinates with valve body 123 is inconsistent, thus the 3rd cavity 53 of piston 5 is disconnected with the runner 124 of pedestal 121, drilling fluid can not enter in the 3rd cavity 53, now as shown in Figure 3, because continuous fluid supplies, between valve module 12 and piston 5, the pressure of drilling fluid constantly increases, the fluid pressure in space is made to be greater than fluid pressure in the second chamber 7 and the 3rd chamber 10, simultaneously under the effect of gravity and fluid pressure, piston 5 starts descending.
Repeat the above-mentioned course of work, the piston 5 in hydraulical impact generating means just can have the reciprocating impact of certain frequency to move, thus auxiliary rotary head formation realizes efficient rock-breaking.
Hydraulical impact generating means of the present invention, by being provided with the driving chamber that the annular space that do not form with drilling tool external surface and the well borehole wall is connected in device, and by arranging fluid passage and chamber, driving chamber is connected with the pressure fluid of device inside, make to drive the pressure fluid in chamber application apparatus to carry out the motion of driven plunger, thus completely cut off the contact of fluid in chamber and annular space, effectively solve foreign matter in well and be inhaled into the problem of percussion generating means inside, avoid foreign matter and block valve body or piston 5, accelerate the wearing and tearing of valve body or piston, thus improve operational reliability and the application life of instrument.
As the technique effect that the present invention adds, the first through hole 21 of the first joint 2 and the 3rd cavity 53 of piston 5 are the emptying passage of drilling fluid, are suitable for oil/gas drilling huge discharge drilling condition.Be provided with the first damping unit 161 and the pressure pocket 1232 of damper piston 5 percussion in valve module 12, thus valve module is relatively little by the percussion of piston, can further improve the stability of instrument.
In the present embodiment, as shown in the Subgraph of Fig. 1 to Fig. 3, the first sleeve 1, second sleeve 3, piston 5 can coaxially be arranged, and the first sleeve 1, second sleeve 3, piston 5 also can disalignment be arranged in other embodiments.
In the present embodiment, first cavity 11 can be positioned at the center of the first sleeve 1, second cavity 33 can be positioned at the center of the second sleeve 3,3rd cavity 53 can be positioned at the center of piston 5, the delivery port of throttling arrangement 54 can be positioned at the center of piston 5, the object above-mentioned parts being arranged on the position of same axis centre is: in the process of device work, in order to reduce the difference pressuring loss of drilling pressure fluid, improve impact strength, be set to by the runner of drilling fluid in same axis centre, drilling fluid does not have obstacle in the process of flowing.In other embodiments, said apparatus also can not be arranged in same axis centre.
In the present embodiment, as shown in the Subgraph of Fig. 1 to Fig. 3, throttling arrangement 54 in 3rd cavity 53 of piston 5 body can be bit port, enter into drilling fluid in the 3rd cavity 53 through being arranged on the throttling action of the bit port 54 of the 3rd cavity 53, the pressure of the drilling fluid before throttling is greater than the pressure of drilling fluid after throttling; The inwall of outer wall 32 and the first sleeve 1 that the drilling fluid after throttling enters into the second sleeve 3 is formed in the first chamber 4.Piston 5 can offer the second intercommunicating pore 8 be communicated with the 3rd cavity 53 near its second end place, second intercommunicating pore 8 of piston 5 is communicated with the second chamber 7, thus allow the drilling fluid before throttling enter into the second chamber 7, second shading ring 9 can be installed in the second cavity 33 of the second sleeve 3, and be set in the first end of the body 51 of piston, thus form the 3rd chamber 10; Second sleeve 3 can offer the first intercommunicating pore 101 near the first end place of piston 5 makes the first chamber 4 be communicated with the 3rd chamber 10, thus makes the drilling fluid after throttling enter into the 3rd chamber 10.Fluid pressure now in the second chamber 7 is greater than the 3rd chamber 10, under the effect of pressure differential, and piston 5 meeting up (as shown in Figure 3).When piston 5 is up to highest order, piston 5 coordinates with valve body 123 is inconsistent, thus the 3rd cavity 53 of piston 5 is disconnected with the runner of pedestal 121, drilling fluid can not enter in the 3rd cavity 53, now as shown in Figure 3, in space between valve module 12 and piston 5, the pressure of drilling fluid constantly increases because continuous fluid supplies, the fluid pressure in space is made to be greater than fluid pressure in the second chamber 7 and the 3rd chamber 10, simultaneously again due to the effect of gravity, piston 5 starts descending, do not get rid of at this and there is other throttle style, as long as make the pressure of the drilling fluid in piston 5 the 3rd cavity 53 change, all meet the requirements.
In the present embodiment, the sidewall of piston 5 being provided with groove 20, second intercommunicating pore 8 be communicated with the second intercommunicating pore 8 can be the radial hole processed near the position of the first end of the body 51 of piston at groove 20; Hydraulical impact generating means has at least one operating position, when relative second sleeve 3 of piston 5 from the first end of the first sleeve 1 to the second end motion time, the degree of depth of groove 20 can be 2-6mm, in this case 4mm.Groove 20 can uniform 2-6 bar on contour, gets 4 at this.The length of groove 20 can 5-15mm longer than the length of the first shading ring 6,10mm is got at this, the object of such setting be the length of groove 20 longer than the first shading ring 6 time, as shown in Figure 1, when piston 5 goes downwards to extreme lower position, the first shading ring 6 can not cover groove 20 completely, thus causes the pressure fluid in the second chamber 7 to be flowed out by groove 20, and then high pressure is not become in the second chamber 7, piston 5 can realize the circulation of drilling fluid and percussion not occur when drill bit stretches out.
In the present embodiment, as shown in Figure 4, the valve body 123 of valve module 12 is slidably located in pedestal 121, the first damping unit 161 is provided with between pedestal 121 and valve body 123, when piston 5 is up to extreme higher position, end face and the valve body 123 of piston 5 are fitted, and piston 5 pairs of valve bodies 123 have certain percussion simultaneously.By arranging the first damping unit 161, when valve body 123 is subject to the percussion of piston 5, valve body 123 can produce certain slip to the first end 13 of the first sleeve 1 in pedestal 121, thus the percussion of damper piston 5 pairs of valve bodies 123, to improve stability when device uses and life-span.
In the present embodiment, as shown in Figure 4, the first block 171 that hydraulical impact generating means can also comprise the second damping unit 162 and be set in the first sleeve 1, first block 171 can lean with the pedestal 121 of the second sleeve 3 and/or valve module 12 towards one end of the second end 14 of the first sleeve 1, and the first block 171 is abutted against towards one end of the first end 13 of the first sleeve 1 mutually with the second damping 162 device; Second damping unit 162 can selection standard part also can be designed as similar can the element of axial elastic deformation, such as spring.It is mainly in order to offset because mismachining tolerance causes the valve module 12 fixing percussion loosened to valve module 12 when problem and damper piston 5 work in the circumferential; Second block 172 can be circular cylinder, and it is slightly little but than the internal diameter being greater than the second sleeve 3 that its external diameter compares the internal diameter of the first sleeve 1, to prop up the axial displacement that the second sleeve 3 prevents it.
In the present embodiment, as shown in Figure 4, valve body 123 has pressure-bearing portion 1231 at its first end 13 towards the first sleeve 1, the pressure pocket 1232 of isolating with the runner 124 of pedestal 121 can be formed between pedestal 121 and pressure-bearing portion 1231, pedestal 121 is provided with the third connecting hole 15 for being communicated with the first chamber 4 by pressure pocket 1232, after pressure pocket 1232 is communicated with the first chamber 4, the drilling fluid of the first chamber 4 is flowed in pressure pocket 1232, as shown in Figure 3, when piston 5 is up to extreme higher position, end face and the valve body 123 of piston 5 are fitted, there is certain percussion to valve body 123 simultaneously, by arranging pressure pocket 1232, the impact of drilling fluid to valve body 123 can be allowed to play the effect of buffering, with improve device use time stability and the life-span, and ensure the effect of valve body 123 due to front and back pressure differential simultaneously, and do not produce downward motion.
Further, when the device is made operational, due to the effect of throttling, it is low-pressure drilling fluid in the pressure pocket 1232 be connected with the first cavity 11, it is high pressure drilling fluid between valve module 12 and piston 5, for ensureing osmotic pressure not to occur between low-pressure fluid and high-pressure fluid, the dynamic sealing device 18 that at least two groups are arranged along the long axis direction of described first sleeve 1 is provided with between pedestal 121 and valve body 123, in the process of valve body 123 upward sliding after the impact being subject to piston 5, ensure that the sealing of device.
In the present embodiment, as shown in Figure 4, hydraulical impact generating means can also comprise the second block 172 abutted with the second shading ring 9 and pedestal 121 respectively, and pedestal 121 and the second shading ring 9 are not loosened along the long axis direction of the first sleeve 1, stability during holding device work.
In the present embodiment, as shown in Figures 3 and 4, when piston 5 is up to extreme higher position, the body 51 of piston 5 is fitted near one end of valve module 12 and valve body 123, the body 51 of piston 5 can be provided with load portion near one end of valve module 12, and at least part of load portion 22 is towards valve module 1.High pressure drilling fluid between valve module 12 and piston 5 acts in load portion 22, and then produces one to the downward thrust of piston 5, and simultaneously due under the effect of gravity, piston 5 starts descending.
In the present embodiment, as shown in the Subgraph of Fig. 1 to 3, this hydraulical impact generating means also comprises drill bit assembly 23, and this drill bit assembly 23 comprises retaining ring 24, joint ring 25, second joint 26, drill hammer 27; Joint ring 25 is plastic material, is arranged in the groove that the first urceolus arranges near drill bit assembly 23, installs with interference fit mounting means.Retaining ring 24 is arranged on the second sleeve, for easy for installation, retaining ring is cut into two parts, the raised structures on drill hammer 27 is coordinated to fall off to limit drill hammer 27 downwards, second joint 26 is connected with the first sleeve 1 by screw thread, its inner surface is processed with spline structure, coordinates with the spline structure of drill hammer 27, and drill hammer 27 is rotated along with the rotation of the first sleeve 1.Be provided with through hole centered by drill hammer 27, and being divided near drill bit basal surface position 2-3 passage aisle to pass through to clean drill hammer 27 by drilling fluid, bottom drill hammer 27, impact teeth be installed.
For the ease of understanding between above-mentioned parts how cooperating, the course of work below with regard to this hydraulical impact generating means is further described in detail.
In one embodiment of the invention, when drill hammer 27 contacts shaft bottom, drill hammer 27 is upwards subjected to displacement, drill hammer 27 after up contacts with piston 5 and upwardly less displacement (as shown in Figure 2) upwards occurs piston 5, drill bit assembly is provided with retaining ring 24, just stops up after making drill hammer 27 be up to certain distance.Until groove 20 lower surface is closed by the first shading ring 6, now percussion generating means is in running order.Drilling fluid is by the first through hole 21 access to plant of the first joint 2, enter in the space between valve module 12 and piston 5 by the runner 124 of valve module 12, size and the pressure of drilling fluid can be controlled by the position and quantity arranging the runner 124 of valve module 122.And then enter in the 3rd cavity 53 of piston 5.Enter into the effect of the drilling fluid in the 3rd cavity 53 through the 3rd cavity 53 rotary head hydrophthalmia, the pressure of the drilling fluid before throttling is greater than the pressure of drilling fluid after throttling.In the first chamber 4 that the inwall 111 of outer wall 31 and described first sleeve 1 that the drilling fluid after throttling enters into the second sleeve 3 is formed.Piston 5 offers the second intercommunicating pore 8 be communicated with the 3rd cavity 53 near its second end place, the second intercommunicating pore 8 of piston 5 is communicated with the second chamber 7, thus allows the drilling fluid before throttling enter into the second chamber 7.Second shading ring 9 is installed in the second cavity 33 of the second sleeve 3, and is set in the first end of piston only 51, thus forms the 3rd chamber 10; Second sleeve 3 offers the first intercommunicating pore 101 near the first end place of piston 5 makes the first chamber 4 be communicated with the 3rd chamber 10, thus makes the drilling fluid after throttling enter into the 3rd chamber 10., the fluid pressure now in the second chamber 7 is greater than the 3rd chamber 10, under the effect of pressure differential, and piston 5 meeting up (as shown in Figure 3).When piston 5 is up to highest order, as shown in Figures 3 and 4, piston 5 coordinates with valve body 123 is inconsistent, thus the 3rd cavity 53 of piston 5 is disconnected with the runner of pedestal 121, drilling fluid can not enter in the 3rd cavity 53, and the valve body 123 of valve module 12 is slidably located in pedestal 121, the first damping unit 161 is provided with between pedestal 121 and valve body 123, when piston 5 is up to extreme higher position, end face and the valve body 123 of piston 5 are fitted, and have certain percussion to valve body 123 simultaneously; By arranging the first damping unit 161, making valve body 123 in pedestal 121, certain slip can be produced to the first end 13 of the first sleeve 1, carrying out the percussion of damper piston 5 pairs of valve bodies 123, with improve device use time stability and the life-span.Valve body 123 has pressure-bearing portion 1231 at its first end 13 towards the first sleeve 1, the pressure pocket 1232 of isolating with the runner 124 of pedestal 121 can be formed between pedestal 121 and pressure-bearing portion 1231, pedestal 121 is provided with the third connecting hole 15 for being communicated with the first chamber 4 by pressure pocket 1232, after pressure pocket 1232 is communicated with the first chamber 4, the drilling fluid of the first chamber 4 is flowed in pressure pocket 1232, as shown in Figure 3, when piston 5 is up to extreme higher position, end face and the valve body 123 of piston 5 are fitted, there is certain percussion to valve body 123 simultaneously, by arranging pressure pocket 1232, the impact of drilling fluid to valve body 123 can be allowed to play the effect of buffering, with improve device use time stability and the life-span.As shown in Figure 3, in space between valve module 12 and piston 5, the pressure of drilling fluid constantly increases because continuous fluid supplies, the fluid pressure in space is made to be greater than fluid pressure in the second chamber 7 and the 3rd chamber 10, piston 5 body is fitted near one end of valve module 12 and valve body 123, piston 5 body can be provided with load portion 22 near one end of valve module 12, and at least part of load portion 22 is towards valve module 1.High pressure drilling fluid between valve module 12 and piston 5 acts in load portion 22, and then applies the downward thrust of piston 5, and simultaneously under the effect of gravity and fluid pressure, piston 5 starts descending.Repeat the above-mentioned course of work, the piston 5 in hydraulical impact generating means just can have the reciprocating impact of certain frequency to move, thus auxiliary rotary head formation realizes efficient rock-breaking.
Should be appreciated that, above description is to carry out illustrating instead of in order to limit.By reading foregoing description, the many embodiments outside provided example and many application will be all apparent for a person skilled in the art.Therefore, the scope of this instruction should not determined with reference to foregoing description, but the four corner of the equivalent that should have with reference to claims and these claims is determined.For comprehensive object, all articles and with reference to comprising the open all by reference to being combined in herein of patent application and bulletin.Omit in aforementioned claim theme disclosed herein any in be not to abandon this body matter, also should not be considered as the part that this theme is not thought of as disclosed subject matter by inventor.
Claims (11)
1. a hydraulical impact generating means, is characterized in that, it comprises:
First sleeve, it has along the relative first end of its long axis direction and the second end, and described first sleeve has along the first through cavity of long axis direction;
First joint, it is arranged on the first end of described first sleeve, and described joint is provided with the first through hole with described first cavity connects;
Second sleeve, its fixed cover is located in described first sleeve, the outer wall of described second sleeve and the inwall of described first sleeve form the first chamber, described first chamber is closed towards the first end of described first sleeve, and described first sleeve has along the second through cavity of the long axis direction of described first sleeve;
Piston, it is positioned at the second cavity of described second sleeve, and can slide along the long axis direction of described first sleeve by relatively described second sleeve, described piston comprises the body that the long axis direction along described first sleeve extends, along the lug boss that the long axis direction perpendicular to described first sleeve protrudes, the lug boss of described piston and the inwall of described second sleeve match, described body has along the 3rd through cavity of the long axis direction of described first sleeve, described body is provided with throttling arrangement in the 3rd cavity of the second end of described first sleeve, 3rd chamber of described body towards the second end of described first sleeve one end can with described first chamber,
First shading ring, it is installed in the second cavity of described second sleeve, and be set in the second end of the body of described piston, thus form the second chamber with described second sleeve, described piston, described piston offers the second intercommunicating pore by described 3rd cavity and described second chamber, and the more described throttling arrangement of described second intercommunicating pore is near the first end of described first sleeve;
Second shading ring, it is installed in the second cavity of described second sleeve, and be set in the first end of the body of described piston, thus form the 3rd chamber with described second sleeve, described piston, described second sleeve offers and described 3rd chamber first intercommunicating pore;
Valve module, it is arranged in described first sleeve, and between described joint and described piston, described valve module comprises pedestal, valve body, described pedestal offers the runner with the second cavity connects of the first through hole of described first joint and described second sleeve, described valve body can engage with the first end of described piston, thus the 3rd cavity of described piston and the runner of described pedestal are disconnected.
2. hydraulical impact generating means according to claim 1, is characterized in that, described first sleeve, described second sleeve, described piston coaxial are arranged.
3. hydraulical impact generating means according to claim 2, it is characterized in that, described first cavity is positioned at the center of described first sleeve, described second cavity is positioned at the center of described second sleeve, described 3rd cavity is positioned at the center of described piston, and the delivery port of described throttling arrangement is positioned at the center of described piston.
4. hydraulical impact generating means according to claim 1, it is characterized in that, the sidewall of described piston is provided with the groove be communicated with described second intercommunicating pore, described hydraulical impact generating means has at least one operating position, when relatively described second sleeve of described piston from the first end of the first sleeve to the second end motion time, the cavity connects of described groove and described first sleeve.
5. hydraulical impact generating means according to claim 1, is characterized in that, described second sleeve is provided with a step, to prop up the second shading ring one end at the first end towards described first sleeve.
6. hydraulical impact generating means according to claim 1, is characterized in that, is set in described pedestal the valve body slides of described valve module, is provided with the first damping unit between described pedestal and described valve body.
7. hydraulical impact generating means according to claim 1, it is characterized in that, described hydraulical impact generating means also comprises the second damping unit and is set in the first block in described first sleeve, described first block can lean with the pedestal of described second sleeve and/or described valve module in one end of the second end towards described first sleeve, and described first block is abutted against mutually in one end of the first end towards described first sleeve and described second damping unit.
8. hydraulical impact generating means according to claim 6, it is characterized in that, described valve body has pressure-bearing portion at its first end towards described first sleeve, form the pressure pocket of isolating with the runner of described pedestal between described pedestal and described pressure-bearing portion, described pedestal is provided with for the third connecting hole by described pressure pocket and described first chamber.
9. hydraulical impact generating means according to claim 8, is characterized in that, is provided with the dynamic sealing device that at least two groups are arranged along the long axis direction of described first sleeve between described pedestal and described valve body.
10. hydraulical impact generating means according to claim 1, is characterized in that, described hydraulical impact generating means also comprises the second block abutted with described second shading ring and described pedestal respectively.
11. hydraulical impact generating means according to claim 1, it is characterized in that, described piston has when described piston engages with described valve body for bearing the load portion of the active force of the liquid that described runner flows into, and at least part of described load portion is towards described pedestal.
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| CN201510617166.2A CN105178845B (en) | 2015-09-24 | 2015-09-24 | Hydraulic impact generating device |
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| CN201510617166.2A CN105178845B (en) | 2015-09-24 | 2015-09-24 | Hydraulic impact generating device |
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| CN105178845B CN105178845B (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639881A (en) * | 2016-12-30 | 2017-05-10 | 淄博润承知识产权代理有限公司 | Hydraulic oscillator |
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| CN85202387U (en) * | 1985-06-07 | 1986-04-02 | 地质矿产部石油钻井研究所 | Fluid operated hammer for the use of oil rotary drilling |
| CN203603758U (en) * | 2013-11-25 | 2014-05-21 | 长沙天和钻具机械有限公司 | High-frequency impactor |
| CN104343385A (en) * | 2013-07-23 | 2015-02-11 | 中国石油化工股份有限公司 | Hydraulic impactor |
| CN104471176A (en) * | 2012-07-03 | 2015-03-25 | 李日载 | Impact body for hydraulic impact device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85202387U (en) * | 1985-06-07 | 1986-04-02 | 地质矿产部石油钻井研究所 | Fluid operated hammer for the use of oil rotary drilling |
| CN104471176A (en) * | 2012-07-03 | 2015-03-25 | 李日载 | Impact body for hydraulic impact device |
| CN104343385A (en) * | 2013-07-23 | 2015-02-11 | 中国石油化工股份有限公司 | Hydraulic impactor |
| CN203603758U (en) * | 2013-11-25 | 2014-05-21 | 长沙天和钻具机械有限公司 | High-frequency impactor |
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| CN106639881A (en) * | 2016-12-30 | 2017-05-10 | 淄博润承知识产权代理有限公司 | Hydraulic oscillator |
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| CN105178845B (en) | 2018-01-05 |
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