CN203081333U - Anti-separating bi-directional hydraulic absorber - Google Patents
Anti-separating bi-directional hydraulic absorber Download PDFInfo
- Publication number
- CN203081333U CN203081333U CN 201220634607 CN201220634607U CN203081333U CN 203081333 U CN203081333 U CN 203081333U CN 201220634607 CN201220634607 CN 201220634607 CN 201220634607 U CN201220634607 U CN 201220634607U CN 203081333 U CN203081333 U CN 203081333U
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- axle
- piston
- limited block
- hydraulic damper
- bidirectional hydraulic
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- Expired - Lifetime
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Abstract
The utility model discloses an anti-separating bi-directional hydraulic absorber. The anti-separating bi-directional hydraulic absorber comprises a longitudinal damping mechanism and a piston reversing mechanism, wherein the longitudinal damping mechanism and the piston reversing mechanism are arranged inside an outer sleeve; the longitudinal damping mechanism comprises compressible fluid (7) inside the outer sleeve and a piston (2) connected with a mandrel (1); the piston reversing mechanism comprises a screw pair (10) between the piston and the mandrel; a spline body (3), a connecting body (4), a hydraulic cylinder (5) and a lower connector (6) are sequentially connected to form the outer sleeve; the connecting body (4) and the hydraulic cylinder (5) are connected through torque-transmitting threads (13); and a limiting block assembly is arranged on the mandrel of the lower end surface of the connecting body. According to the anti-separating hydraulic absorber, easily-separated threaded connection between a centralizer outer barrel and a spline body in the prior double-direction hydraulic absorber is cancelled, and a limiting surface is moved between a lower connecting body and a limiting block. The limiting block can freely rotate inside an annular groove of the mandrel, and relative rotating of the mandrel and the connecting body limiting surface is eliminated. Therefore, the bi-directional hydraulic absorber can not be separated and drop.
Description
Technical field
The utility model relates to a kind of bidirectional hydraulic damper of anti-back button, belongs to the drilling tool technical field.
Background technology
In the drilling process, drill string often has tangible bouncing of drilling tool and vibrations, and moment of torsion also can make drilling tool forfeiture torsional stability.Therefore in the drillng operation, often use the bidirectional hydraulic damper to eliminate or slow down the shock loading of these vibrations, thereby avoid or reduce vibration to the harm that drilling equipment caused, the purpose that realizes improving drilling speed and reduce drilling cost.
Bidirectional hydraulic damper damping mainly is made up of vertical damping and piston changement two parts.Damper element is compressible liquid.Its operating principle mainly is to utilize the working chamber compressible liquid to produce elastic deformation under pressure to absorb or discharge drill bit and drillstring vibrations energy.When compressible liquid the compression or the extension process in, the relative urceolus of axle moves axially.Therefore, the vertical damping extensional vibration and the impact energy that can absorb or slow down drilling tool.The piston changement is that to make twisting vibration and shock loading by screw pair be vertical component of working chamber in the moment internal conversion, thereby reaches the more constant moment of torsion of maintenance.Reach the purpose of two-way vibration damping.
It is spacing that the urceolus end face is set upright in existing bidirectional hydraulic damper employing, this structure owing to exist during the work of axle and outer tube part relatively rotates, under low the pressure of the drill situation, the bouncing of drilling tool of drill bit makes axle and sets upright the urceolus end face and often contact, this just is equivalent to constantly give the jarring force of setting upright a band rotation of urceolus screw thread, cause screw thread to release, last axle and set upright urceolus and deviate from from body causes the lower drilling tool shaft bottom that comes off.This situation occurs and just must stop operation and adopt various Refloatation methods to salvage, cause great loss.Have a strong impact on drilling progress and economic benefit.Particularly in the well section of easily caving in, in case occur that the cave-in grade is made trouble so, concerning whole mouthful of well, the result will be destructive.
Summary of the invention
The purpose of this utility model is, a kind of bidirectional hydraulic damper of anti-back button is provided.When drilling tool is worked under any the pressure of the drill situation, the structure that thread looseness is threaded off.Guarantee bidirectional hydraulic damper operate as normal under low the pressure of the drill situation.Improve the reliability of bidirectional hydraulic damper, eliminate accident potential in possible trouble.To overcome the deficiencies in the prior art.
The technical solution of the utility model:
A kind of bidirectional hydraulic damper of anti-back button comprises the vertical damping and the piston changement that are located in the outer tube, and vertically damping comprises compressible fluid and the piston in the outer tube, and piston is connected with axle; The piston changement comprises the screw pair between piston and the axle; Described outer tube is threaded successively by spline body, connector, oil cylinder and lower contact and constitutes; Connector is threaded through the moment of torsion transmission with oil cylinder; The axle at place, connector lower surface is provided with the limited block assembly.
In the aforementioned bidirectional hydraulic damper, described limited block assembly and axle matched in clearance.
In the aforementioned bidirectional hydraulic damper, described limited block assembly comprises the limited block of two semi-circular structure, and the limited block of two semi-circular structure is in the limited block nut connects into the annular groove that annulus is located at axle.
In the aforementioned bidirectional hydraulic damper, described piston is between spline body and axle, and piston is connected through screw pair with axle, and piston and spline body are slidingly connected through spline.
In the aforementioned bidirectional hydraulic damper, described axle lower end is threaded with washing pipe.
In the aforementioned bidirectional hydraulic damper, sealed sliding is dynamically connected between described oil cylinder lower end and the washing pipe.
In the aforementioned bidirectional hydraulic damper, described spline body upper end is dynamically connected with the axle sealed sliding.
Compared with prior art, the utility model has been cancelled and is set upright urceolus in the existing bidirectional hydraulic damper and be threaded with easy dropout between the spline body, and confined planes is moved between bottom connector and the limited block.Limited block is made up of two semi-rings.Directly snap in during installation in the annular groove of axle, fix with the limited block nut.Structure of the present utility model can guarantee that limited block freely rotates in the annular groove of axle, eliminate relatively rotating of axle and connector confined planes.Connecting thread between connector and the oil cylinder is that moment of torsion transmits screw thread simultaneously, is in all the time under the operation torque state, can not produce the phenomenon that comes off during operate as normal.Guarantee bidirectional hydraulic damper operate as normal under low the pressure of the drill situation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the scheme of installation of limit assembly;
Fig. 3 is the prior art constructions schematic diagram.
Being labeled as among the figure: 1-axle, 2-piston, 3-spline body, 4-connector, 5-oil cylinder, 6-lower contact, 7-compressible liquid, 8-limited block, 9-limited block nut, 10-screw pair, 11-spline, 12-washing pipe, 13-moment of torsion transmission screw thread, 14-confined planes, 15-annular groove, 16-set upright sleeve.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing, but not as to any restriction of the present utility model.
A kind of bidirectional hydraulic damper of anti-back button as shown in Figure 1, comprises the vertical damping and the piston changement that are located in the outer tube, and vertically damping comprises compressible fluid 7 and the piston 2 in the outer tube, and piston 2 is connected with axle 1; The piston changement comprises the screw pair 10 between piston 2 and the axle 1; Described outer tube is threaded successively by spline body 3, connector 4, oil cylinder 5 and lower contact 6 and constitutes; Connector 4 transmits screw thread 13 with oil cylinder 5 through moment of torsion and is connected; The axle 1 at place, connector 4 lower surfaces is provided with the limited block assembly.Limited block assembly and axle 1 matched in clearance.The limited block assembly as shown in Figure 2, the limited block 8 of 8, two semi-circular structure of limited block that comprises two semi-circular structure is in limited block nut 9 connects into the annular groove 15 that annulus is located at axle 1.Piston 2 is between spline body 3 and axle 1, and piston 2 is connected through screw pair 10 with axle 1, and piston 2 is slidingly connected through spline 11 with spline body 3.Axle 1 lower end is threaded with washing pipe 12.Sealed sliding is dynamically connected between oil cylinder 5 lower ends and the washing pipe 12.Spline body 3 upper ends and axle 1 sealed sliding are dynamically connected.
The course of work of the present utility model and principle
As shown in Figure 1, described bidirectional hydraulic damper mainly is made up of vertical damping and piston changement two parts, the piston changement is converted to vertical component and moment of torsion by the screw pair 10 between piston 2 and the axle 1 with rotary impact load, slow down the vibrations that vertical component causes by vertical damping, moment of torsion passes to limit assembly; The utility model is that connector 4 lower surfaces that limit assembly is located in the bidirectional hydraulic damper outer tube are located; Adopt moment of torsion to transmit screw thread 13 connected modes between connector 4 and the oil cylinder 5, transmit connecting thread that screw thread 13 prevents connector 4 and oil cylinder 5 by the moment of torsion between connector 4 and the oil cylinder 5 and move back and buckle.Limit assembly is installed in the annular groove 15 of place, connector 4 lower surfaces axle 1, adopt the rotational slide connected mode between limit assembly and the annular groove 15, when torsional interaction is on limit assembly, limit assembly can rotate on axle 1, the rotational component that moment of torsion forms is eliminated in rotation by limit assembly on outer tube, rotational component can not make the connecting thread of connector 4 and oil cylinder 5 move back and buckle.The installation of limit assembly comprises that the limited block 8 of 8, two semi-circular structure of limited block of two semi-circular structure connects in the annular groove 15 that annulus is stuck in axle 1 by limited block nut 9 as shown in Figure 2; Limited block 8 and annular groove 15 matched in clearance guarantee that limit assembly can rotate in the annular groove 15 of axle 1, to eliminate the rotational component that moment of torsion forms on outer tube.
The utility model is the improvement to existing bidirectional hydraulic damper, and existing bidirectional hydraulic damper as shown in Figure 3.As seen from Figure 3.Existing bidirectional hydraulic damper comprises the interior axle that is threaded and is constituted by axle 1 and washing pipe 12, and by setting upright the overcoat that sleeve 16, spline body, oil cylinder 5 and lower contact 6 are threaded successively and constitute; Set upright sleeve 16 upper ends and axle 1 sealed sliding is dynamically connected, oil cylinder 5 lower ends and washing pipe 12 sealed sliding are dynamically connected, be provided with compressible liquid 7 between oil cylinder 5 and the interior axle, be provided with piston 2 between spline body 3 and the axle 1, piston 2 cylindricals and spline body 3 are slidingly connected, circle is threaded with axle 1 in the piston 2, and the axle 1 of setting upright sleeve 16 lower ends is provided with limited block 8, and limited block 8 is threaded with axle 1.
The utility model has carried out following improvement to existing bidirectional hydraulic damper
1, cancelled the existing sleeve 16 of setting upright and be threaded, made overall structure, constituted spline body 3 of the present utility model setting upright sleeve and original spline body with easy dropout between the spline body.
2, increased a connector 4 between existing spline body 3 and oil cylinder 5, spline body 3 is threaded by connector 4 with oil cylinder 5.Its screw thread adopts the moment of torsion that is difficult for threading off to transmit screw thread 13.
3, existing limited block is positioned at the place, lower surface that sets upright sleeve 16, and the utility model has moved on to limited block at the place, lower surface of connector 4.
4, existing limited block is an overall structure, and is threaded with axle; The utility model has made limited block into two semi-circular structure, the limited block 8 of two semi-circular structure in limited block nut 9 connects into the annular groove 15 that annulus is stuck in axle 1, limited block 8 and axle 1 matched in clearance.
Because the utility model has carried out above improvement, can guarantee that limited block freely rotates in the annular groove of axle, eliminate relatively rotating of axle and connector confined planes.Connecting thread between connector and the oil cylinder is that moment of torsion transmits screw thread simultaneously, is in all the time under the operation torque state, can not produce the phenomenon that comes off during operate as normal.Guarantee bidirectional hydraulic damper operate as normal under low the pressure of the drill situation.Solved prior art and caused screw thread to release easily, last axle and set upright urceolus and deviate from from body causes the come off technical problem in shaft bottom of lower drilling tool.
Claims (7)
1. the bidirectional hydraulic damper of an anti-back button comprises the vertical damping and the piston changement that are located in the outer tube, and vertically damping comprises compressible fluid (7) and the piston (2) in the outer tube, and piston (2) is connected with axle (1); The piston changement comprises the screw pair (10) between piston (2) and the axle (1); It is characterized in that: described outer tube is by spline body (3), connector (4), oil cylinder (5) and lower contact (6) formation that is threaded successively; Connector (4) transmits screw thread (13) with oil cylinder (5) through moment of torsion and is connected; The axle (1) at place, connector (4) lower surface is provided with the limited block assembly.
2. the bidirectional hydraulic damper of anti-back button according to claim 1 is characterized in that: described limited block assembly and axle (1) matched in clearance.
3. the bidirectional hydraulic damper of anti-back button according to claim 1, it is characterized in that: described limited block assembly comprises the limited block (8) of two semi-circular structure, and the limited block of two semi-circular structure (8) is in limited block nut (9) connects into the annular groove (15) that annulus is located at axle (1).
4. the bidirectional hydraulic damper of anti-back button according to claim 1, it is characterized in that: described piston (2) is positioned between spline body (3) and the axle (1), piston (2) is connected through screw pair (10) with axle (1), and piston (2) is slidingly connected through spline (11) with spline body (3).
5. the bidirectional hydraulic damper of anti-back button according to claim 1 is characterized in that: described axle (1) lower end is threaded with washing pipe (12).
6. the bidirectional hydraulic damper of anti-back button according to claim 1 is characterized in that: sealed sliding is dynamically connected between described oil cylinder (5) lower end and the washing pipe (12).
7. the bidirectional hydraulic damper of anti-back button according to claim 1 is characterized in that: described spline body (3) upper end is dynamically connected with axle (1) sealed sliding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634607 CN203081333U (en) | 2012-11-27 | 2012-11-27 | Anti-separating bi-directional hydraulic absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220634607 CN203081333U (en) | 2012-11-27 | 2012-11-27 | Anti-separating bi-directional hydraulic absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203081333U true CN203081333U (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220634607 Expired - Lifetime CN203081333U (en) | 2012-11-27 | 2012-11-27 | Anti-separating bi-directional hydraulic absorber |
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| Country | Link |
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| CN (1) | CN203081333U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775004A (en) * | 2012-11-27 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Method for preventing bidirectional hydraulic shock absorber from being released and shock absorber |
| CN104712259A (en) * | 2013-12-13 | 2015-06-17 | 中国石油天然气集团公司 | Full mechanical bidirectional drill column shock absorber and process method |
| CN105545223A (en) * | 2016-01-29 | 2016-05-04 | 贵州高峰石油机械股份有限公司 | Drill bit damping method and disc spring bidirectional damper |
| CN107035322A (en) * | 2017-06-09 | 2017-08-11 | 贵州高峰石油机械股份有限公司 | A kind of method and structure of positive and negative high antitorque anti-back button |
| CN114753780A (en) * | 2022-06-14 | 2022-07-15 | 成都若克菲斯科技有限公司 | Bidirectional longitudinal shock absorber |
-
2012
- 2012-11-27 CN CN 201220634607 patent/CN203081333U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775004A (en) * | 2012-11-27 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Method for preventing bidirectional hydraulic shock absorber from being released and shock absorber |
| CN103775004B (en) * | 2012-11-27 | 2016-03-09 | 贵州高峰石油机械股份有限公司 | Prevent bidirectional hydraulic damper from moving back method and the damper of button |
| CN104712259A (en) * | 2013-12-13 | 2015-06-17 | 中国石油天然气集团公司 | Full mechanical bidirectional drill column shock absorber and process method |
| CN105545223A (en) * | 2016-01-29 | 2016-05-04 | 贵州高峰石油机械股份有限公司 | Drill bit damping method and disc spring bidirectional damper |
| CN107035322A (en) * | 2017-06-09 | 2017-08-11 | 贵州高峰石油机械股份有限公司 | A kind of method and structure of positive and negative high antitorque anti-back button |
| CN114753780A (en) * | 2022-06-14 | 2022-07-15 | 成都若克菲斯科技有限公司 | Bidirectional longitudinal shock absorber |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130724 |