CN207436982U - Hydraulic jar - Google Patents
Hydraulic jar Download PDFInfo
- Publication number
- CN207436982U CN207436982U CN201721443531.3U CN201721443531U CN207436982U CN 207436982 U CN207436982 U CN 207436982U CN 201721443531 U CN201721443531 U CN 201721443531U CN 207436982 U CN207436982 U CN 207436982U
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- jarring
- jarring body
- elastic component
- outer barrel
- inner cavity
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- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000035939 shock Effects 0.000 claims abstract description 35
- 241000251468 Actinopterygii Species 0.000 description 10
- 239000012224 working solution Substances 0.000 description 9
- 239000003129 oil well Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a hydraulic jar belongs to oil field machinery. The hydraulic jar includes: the upper joint, the outer cylinder and the lower joint are communicated from top to bottom in sequence; the outer cylinder includes: the small-diameter inner cavity section and the large-diameter inner cavity section are communicated up and down; the upper and lower jarring bodies are axially slidably sleeved in the outer barrel, and the upper end of the upper jar body and the lower end of the lower jar body are respectively used for jarring the upper joint and the lower joint; the sealing element is sleeved on the lower shock body and used for dynamically sealing an annular gap between the lower shock body and the small-diameter inner cavity section, and the outer diameter of the sealing element is smaller than the inner diameter of the large-diameter inner cavity section; the upper elastic piece is arranged in a pressure applying cavity formed by the upper shock body and the small-diameter inner cavity section, and the upper end and the lower end of the upper elastic piece are respectively abutted against the upper joint and the lower shock body; the lower elastic part is arranged in a pressure relief cavity formed by the lower jarring body and the outer cylinder body, and the upper end and the lower end of the lower elastic part are respectively abutted against the lower jarring body and the lower joint; the wall of the large-diameter inner cavity section is provided with a pressure relief hole communicated with the pressure relief cavity.
Description
Technical field
The utility model is related to oilfield machinery field, more particularly to a kind of hydraulic shock device.
Background technology
In oilfield production, tubing, bar class, rope class, smallclothes object etc. can inevitably occur to fall into oil well, these fall
The object entered in oil well is known as fish.Fish easily blocks oil reservoir, causes lock of tool drilling etc., influences the normal production of oil well, leads to
Fish can be salvaged by crossing tubing string (such as oil pipe, beam hanger) tripping in fishing tool into oil well.However, in lifting fish upwards
During, fish or fishing tool are easily blocked by oil well inner wall.By setting hydraulic pressure between tubing string and fishing tool
Bumper jar, and by tubing string, hydraulic shock device, fishing tool tripping in target oil casing program design fish, treat fish or fishing tool
During by card, jarring action is generated by hydraulically-driven hydraulic bumper jar, fish or fishing tool unfreezing can be made.Based on above-mentioned
It understands, it is very necessary to provide a kind of hydraulic shock device.
The prior art provides a kind of hydraulic shock device, which includes：Central tube and from top to bottom sequentially
It is sleeved on upper cylinder sleeve on central tube, middle cylinder sleeve, lower contact.Wherein, what is connected above and below being formed between middle cylinder sleeve and central tube lets out
Pressure chamber and the chamber that builds the pressure, and the middle cylinder sleeve internal diameter corresponding to pressure-releasing chamber is more than the middle cylinder sleeve internal diameter to build the pressure corresponding to chamber, in middle cylinder sleeve
Hydraulic oil is marked in annular cavity between central tube.The device further includes：It is sleeved on central tube and positioned at central tube in
Piston and jarring pad between cylinder sleeve, and piston is located at below the chamber that builds the pressure, jarring pad is located above piston.At work, upwards
Central tube is lifted, central tube drives piston upwards, and after moving to the chamber that builds the pressure on piston, dynamic sealing builds the pressure chamber.Central tube and
The elastic potential energy that tubing string is connected with the upper end is constrained by piston and hydraulic oil, when piston is moved to from the chamber that builds the pressure in pressure-releasing chamber,
Dynamic sealing releases, central tube and the elastic potential energy release that tubing string is connected with the upper end, and then drives the shake positioned at upper piston area
The lower face of cylinder sleeve in pad jarring is hit, makes fish or fishing tool unfreezing.
Designer has found that the prior art has at least the following problems：
The hydraulic shock device that the prior art provides needs to carry central tube when generating jarring, piston is made to be moved in the intracavitary that builds the pressure close
Envelope moves to pressure-releasing chamber, time-consuming and laborious, and the effect of unfreezing is poor.
Utility model content
In order to solve problem of the prior art, the utility model embodiment provides a kind of hydraulic shock device, can solve time-consuming
Arduously, the problems such as and effect of unfreezing is poor.The technical solution is as follows：
The utility model embodiment provides a kind of hydraulic shock device, including：Lower contact；
The hydraulic shock device further includes：Top connection, outer barrel, upper jarring body, lower jarring body, sealing element, upper elastic component,
Lower elastic component；
The top connection, the outer barrel, the lower contact from top to bottom sequentially connect；
The outer barrel includes：The path inner cavity section and major diameter inner cavity section connected up and down；
The upper jarring body and the lower jarring body are vertically connected with, and are axially slidably sheathed on the outer barrel
Interior, the upper end of the upper jarring body, the lower end of the lower jarring body are respectively used to top connection described in jarring and the lower contact；
The sealing member sheathing is on the lower jarring body, for sealing the lower jarring body and path inner cavity section
Between annular gap, and the outer diameter of the sealing element be less than the major diameter inner cavity section internal diameter；
The upper elastic component is arranged on the pressure intracavitary that the upper jarring body and the path inner cavity section are formed, and upper end and
Lower end offsets respectively with the top connection and the lower jarring body；
The lower elastic component is arranged in the pressure-releasing chamber that the lower jarring body is formed with the outer barrel, and top and bottom
It offsets respectively with the lower jarring body and the lower contact；
The relief hole for connecting the pressure-releasing chamber is provided on the wall of the major diameter inner cavity section.
In a kind of possible design, the upper end of the upper jarring body is arranged to chamfering structure.
In a kind of possible design, the upper end of the lower jarring body is provided with jack, the lower end of the upper jarring body with
The jack is detachably connected.
In a kind of possible design, the lower end screw thread of the upper jarring body is socketed in the jack.
In a kind of possible design, the upper end of the outer barrel is sleeved in the top connection；
The top connection, which is located on the outer wall inside the outer barrel, is provided with the first limited step；
The top and bottom of the upper elastic component upper end phase with first limited step and the lower jarring body respectively
It supports.
In a kind of possible design, the second limited step is provided on the outer wall of the lower jarring body；
The lower end of the outer barrel is sleeved in the lower contact, and the lower contact is located at the outer wall inside the outer barrel
On be provided with the 3rd limited step；
The top and bottom of the lower elastic component offset respectively with second limited step and the 3rd limited step.
In a kind of possible design, the upper elastic component and the lower elastic component are to be placed on the pressure vertically respectively
Multiple springs in chamber and the pressure-releasing chamber.
In a kind of possible design, the upper elastic component and the lower elastic component are to be set in the upper jarring body
With a spring on the lower jarring body.
In a kind of possible design, annular groove is provided on the outer wall of the lower jarring body, the sealing element is detachable
Ground is mounted in the annular groove.
In a kind of possible design, between the top connection and the outer barrel, the outer barrel and the lower contact
Between be to be detachably connected.
The advantageous effect brought of technical solution that the utility model embodiment provides is：
The hydraulic shock device that the utility model embodiment provides is vertically connected with by setting and is axially slidably sheathed on
The in vivo upper jarring body of outer barrel and lower jarring body are sleeved on lower jarring body and for jarring body under dynamic sealing and path inner cavity section
Between annular gap sealing element, and the outer diameter of sealing element be less than major diameter inner cavity section internal diameter, in order to chamber and the pressure release of pressing
Chamber is isolated, and then drives upper jarring body, lower jarring body slide downward convenient for the working solution above the supreme jarring body of pump note.Work as sealing
After part enters major diameter inner cavity section, press chamber and pressure-releasing chamber conducting pressure release, lower jarring body slide downward jarring lower contact.By applying
It presses and upper elastic component and lower elastic component is set respectively in chamber and pressure-releasing chamber, convenient for after lower jarring body jarring lower contact, lower elastic component
The lower jarring body of driving, upper jarring body upward sliding, after upper jarring body jarring top connection, the upper jarring body of upper elastic component driving, under
Jarring body slide downward, and then realize the reciprocating motion of upper jarring body and lower jarring body, with efficient unfreezing.The utility model is implemented
The hydraulic shock device that example provides also has the characteristics that simple in structure, unfreezing operation is time saving and energy saving.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the semi-cutaway for the hydraulic shock device that the utility model embodiment provides.
Wherein, reference numeral represents respectively：
1 lower contact,
2 top connections,
3 outer barreies,
301 path inner cavities section,
302 major diameter inner cavities section,
3021 relief holes,
Jarring body on 4,
5 times jarring bodies,
6 sealing elements,
Elastic component on 7,
8 times elastic components.
Specific embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
The upper/lower terminal of hydraulic shock device is connected respectively with tubing string (oil pipe, beam hanger etc.) and fishing tool.Work as fishing tool
Or the fish blocking that fishing tool is salvaged is in oil well inner wall, and jarring is generated by hydraulic shock device, make fishing tool or
The fish unfreezing that person's fishing tool is salvaged.
The utility model embodiment provides a kind of hydraulic shock device, and as shown in Figure 1, which includes：Under
Connector 1, top connection 2, outer barrel 3, upper jarring body 4, lower jarring body 5, sealing element 6, upper elastic component 7, lower elastic component 8.Wherein, on
Connector 2, outer barrel 3, lower contact 1 from top to bottom sequentially connect；Outer barrel 3 includes：The path inner cavity section 301 that connects up and down and big
Footpath inner cavity section 302.Upper jarring body 4 and lower jarring body 5 are vertically connected with, and are axially slidably sheathed in outer barrel 3, upper shake
Hit the upper end of body 4, the lower end of lower jarring body 5 is respectively used to jarring top connection 2 and lower contact 1；Sealing element 6 is sleeved on lower jarring body
On 5, for sealing the annular gap between lower jarring body 5 and path inner cavity section 301, and the outer diameter of sealing element 6 is less than in major diameter
The internal diameter of chamber section 302；Upper elastic component 7 is arranged on the pressure intracavitary that jarring body 4 and path inner cavity section 301 is formed, and upper end and
Lower end offsets respectively with top connection 2 and lower jarring body 5；Lower elastic component 8 is arranged on the pressure release that lower jarring body 5 is formed with outer barrel 3
Intracavitary, and top and bottom offset respectively with lower jarring body 5 and lower contact 1；Connection is provided on the wall of major diameter inner cavity section 302 to let out
Press the relief hole 3021 of chamber.
It should be noted that the internal diameter of path inner cavity section 301 is less than the internal diameter of major diameter inner cavity section 302.Due to sealing element 6
Outer diameter is less than the internal diameter of major diameter inner cavity section 302, so sealing element 6 is unable under dynamic sealing between jarring body 5 and major diameter inner cavity section 302
Annular gap.
The operation principle of the hydraulic shock device provided below with regard to the utility model embodiment, which is given, to be described：
When fishing tool or fish are by card, upper lifting pipe post is not easy, at this point, the pump note working solution (such as water) into tubing string,
Working solution enters the pressure chamber formed between upper 4 top of jarring body and upper jarring body 4 and path inner cavity section 301 by top connection 2
It is interior.Due to the annular gap between jarring body 5 under 6 dynamic sealing of sealing element and path inner cavity section 301, so the work of pressure intracavitary
Liquid cannot flow into pressure-releasing chamber.It is gathered in the upper jarring body 4 of working solution driving of 4 top of jarring body and pressure intracavitary, lower shake
Hit body 5,6 slide downward of sealing element.After sealing element 6 is into major diameter inner cavity section 302, since the outer diameter of sealing element 6 is less than major diameter
The internal diameter of inner cavity section 302, sealing element 6 are unable to the annular gap between jarring body 5 and major diameter inner cavity section 302, pressure under dynamic sealing
Chamber is turned on pressure-releasing chamber, so working solution is entered by pressure chamber in pressure-releasing chamber, and is flowed out by relief hole 3021.At the same time, under
The lower elastic component 8 of 5 slide downward of jarring body compression, and jarring lower contact 1, then descend elastic component 8 to restore to the original state and give lower jarring
The upward driving force of body 5, lower jarring body 5 drive upper jarring body 4,6 upward sliding of sealing element.Until upper 4 upward sliding of jarring body
Elastic component 7 in compression, and jarring top connection 2, then above elastic component 7 restores to the original state and gives jarring body 4 downward driving force,
Upper jarring body 4 drives lower jarring body 5,6 slide downward of sealing element.Until the lower elastic component 8 of lower 5 slide downward of jarring body compression, and
Then jarring lower contact 1 descends elastic component 8 to restore to the original state, drive lower jarring body 5, upper jarring body 4,6 upward sliding of sealing element.Weight
The multiple above process, upper jarring body 4 and lower jarring body 5 pump, multiple jarring top connection 2 and lower contact 1, to realize height
Imitate unfreezing.
In the above-mentioned course of work, one action can be noted by pump into the hydraulic shock device that the utility model embodiment provides
Liquid can also pump the multiple working solution of note.
The hydraulic shock device that the utility model embodiment provides is vertically connected with by setting and is axially slidably sheathed on
Upper jarring body 4 and lower jarring body 5 in outer barrel 3 are sleeved on lower jarring body 5 and for jarring body 5 and path under dynamic sealing
The sealing element 6 of annular gap between inner cavity section 301, and the outer diameter of sealing element 6 is less than the internal diameter of major diameter inner cavity section 302, in order to
To press chamber and pressure-releasing chamber isolation, and then pump is convenient for note working solution driving above jarring body 4, the lower jarring above supreme jarring body 4
5 slide downward of body.After sealing element 6 is into major diameter inner cavity section 302, press chamber and pressure-releasing chamber conducting pressure release, and lower jarring body 5 is downwards
Slide jarring lower contact 1.By setting elastic component 7 and lower elastic component 8 respectively in pressure chamber and pressure-releasing chamber, convenient in lower shake
After hitting 5 jarring lower contact 1 of body, jarring body 5, upper 4 upward sliding of jarring body under the lower driving of elastic component 8, in upper 4 jarring of jarring body
After connector 2, the upper driving of elastic component 7 above jarring body 4, lower 5 slide downward of jarring body, and then realize upper jarring body 4 and lower jarring body 5
Reciprocating motion, with efficient unfreezing.The hydraulic shock device that the utility model embodiment provides also has simple in structure, unfreezing operation
The features such as time saving and energy saving.
Upper jarring body 4 and lower jarring body 5 all can be solid cylinder structures.Also, in upper and lower sliding process, respectively
Jarring top connection 2 and lower contact 1, respectively shake the tubing string being connected with top connection 2, lower contact 1, fishing tool, Jin Ergao
Imitate unfreezing.For the ease of the working solution in the hydraulic shock device of injection the utility model embodiment offer is enable to readily enter
Press chamber, and as shown in Figure 1, the upper end of upper jarring body 4 is arranged to chamfering structure, to increase upper 4 upper end of jarring body and outer barrel 3
Between the area of passage that is formed, readily enter pressure intracavitary convenient for working solution, and then under jarring body 4 drives in high efficiency drive
5 slide downward of jarring body.
There are many connection modes between upper jarring body 4 and lower jarring body 5, for the ease of realizing the lower end of upper elastic component 7
It offsets with lower jarring body 5, the upper end of lower jarring body 5 is provided with jack, and the lower end of upper jarring body 4 is detachably connected with jack.
The mode being detachably connected easily is set, and is convenient for changing the upper jarring body 4 of different size and lower jarring body 5.
There are many modes that the lower end of upper jarring body 4 is detachably connected with jack, on the premise of based on easy set, on
The lower end screw thread of jarring body 4 is socketed in jack.That is, the lower end of upper jarring body 4 is provided with external screw thread, and the inner wall of jack is provided with
Internal thread, the lower end of upper jarring body 4 are threadedly coupled with jack.
In order to avoid upper elastic component 7 is during being compressed and being restored to the original state, depart from pressure chamber, such as 1 institute of attached drawing
Show, the upper end of outer barrel 3 is sleeved in top connection 2；Top connection 2, which is located on the outer wall inside outer barrel 3, is provided with the first /V
Step；Upper end of the top and bottom of upper elastic component 7 respectively with the first limited step and lower jarring body 5 offsets.
That is, the first limited step is located at the lower section of outer barrel 3 and 2 socket place of top connection, is located at the upper end of elastic component 7
Between top connection 2 and outer barrel 3 below first limited step.Also, the lower end of upper elastic component 7 and the jack of lower jarring body 5
Outer wall upper end offsets, and elastic component 7 is avoided to depart from pressure chamber during the work time.
In order to avoid lower elastic component 8 is during being compressed and being restored to the original state, depart from pressure-releasing chamber, such as 1 institute of attached drawing
Show, the second limited step is provided on the outer wall of lower jarring body 5；The lower end of outer barrel 3 is sleeved in lower contact 1, lower contact 1
The 3rd limited step is provided on outer wall inside the outer barrel 3；The top and bottom of lower elastic component 8 respectively with the second limiting stand
Rank and the 3rd limited step offset.
The second limited step that the upper end with lower elastic component 8 is set to offset on the outer wall of lower jarring body 5, that is, descend jarring body 5
Outer wall be provided with the step of protrusion, such as lower jarring body 5 could be provided as including：The major diameter section and path section being vertically connected with,
The second limited step is formed between major diameter section and path section.At this point, sealing element 6 is located at the top of lower elastic component 8, that is, it is sleeved on big
In the section of footpath.3rd limited step is located at the top of outer barrel 3 and 2 socket place of top connection, and the lower end of lower elastic component 8 is made to be located at the 3rd
Between lower contact 1 and outer barrel 3 above limited step.Second limited step and the 3rd limited step are set, avoid lower elasticity
Part 8 departs from pressure-releasing chamber during the work time.
Upper elastic component 7 and lower elastic component 8 could be provided as a variety of components with spring function, based on elastic effect
Good, on the premise of easily the upper jarring body 4 of driving and lower jarring body 5 slide up and down, upper elastic component 7 and lower elastic component 8 are spring.
When upper elastic component 7 and lower elastic component 8 are spring, two kinds can be given below specifically there are many set-up mode
Example：
As the first example：Upper elastic component 7 and lower elastic component 8 press to be placed on vertically respectively in chamber and pressure-releasing chamber
Multiple springs.
By the way that multiple springs is set to assign upper elastic component 7 and the excellent elastic force of lower elastic component 8, with jarring body in high efficiency drive
4 and lower jarring body 5 move back and forth.
As second of example：Upper elastic component 7 and lower elastic component 8 are to be set on jarring body 4 and lower jarring body 5
A spring.
By the way that upper elastic component 7 and lower elastic component 8 are arranged to a spring, prevent that jarring body 4 and lower jarring body 5 are axial
Deviate during slip, convenient for making the downward smooth drive power that upper jarring body 4 is subject to upper elastic component 7 to give, lower jarring body 5 is subject to
The upward smooth drive power that lower elastic component 8 is given, and then make the smoothly jarring top connection 2 respectively of jarring body 4, lower jarring body 5
With lower contact 1, tubing string, the fishing tool that damage is avoided to be connected respectively with top connection 2, lower contact 1.
6 structure annular in shape of sealing element, in order to seal the annular gap between lower jarring body 5 and path inner cavity section 301.For
It is conveniently replaceable sealing element 6, is provided with annular groove on the outer wall of lower jarring body 5, sealing element 6 is removably mounted on annular groove
It is interior.
Sealing element 6 can be arranged on by a variety of removably modes in annular groove, for example, on the bottom wall of annular groove
Buckling groove is provided with, the clamping protrusion being adapted with buckling groove is provided on the inner wall of sealing element 6, by making clamping protrusion and card
Access slot is clamped, and realizes the clamping of sealing element 6 and annular groove.
Wherein, buckling groove can be square groove, arc groove, other rules or irregular structure, and clamping protrusion is and card
The structure that access slot is adapted.
For the ease of replacing top connection 2 and lower contact 1, in order to which the tubing string of different size is connected and not with top connection 2
The fishing tool of same specification is connected with lower contact 1, between top connection 2 and outer barrel 3, be between outer barrel 3 and lower contact 1 can
Dismantling connection.
There are many modes being detachably connected between top connection 2 and outer barrel 3, between outer barrel 3 and lower contact 1,
On the premise of based on easy to manufacture and dismounting, screw thread is socketed in top connection 2 and lower contact 1 to the upper/lower terminal of outer barrel 3 respectively
On.
In addition, it is respectively arranged with the 4th limited step and the 5th /V on the outer wall of the upper and lower connector 1 of the outer wall of top connection 2
Step, after the upper and lower end of outer barrel 3 distinguishes thread set in top connection 2, lower contact 1, the upper and lower end of outer barrel 3 respectively with
4th limited step, the 5th limited step offset.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modifications, equivalent replacements and improvements are made should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of hydraulic shock device, including：Lower contact (1)；
It is characterized in that, the hydraulic shock device further includes：Top connection (2), outer barrel (3), upper jarring body (4), lower jarring body
(5), sealing element (6), upper elastic component (7), lower elastic component (8)；
The top connection (2), the outer barrel (3), the lower contact (1) from top to bottom sequentially connect；
The outer barrel (3) includes：The path inner cavity section (301) connected up and down and major diameter inner cavity section (302)；
The upper jarring body (4) and the lower jarring body (5) are vertically connected with, and are axially slidably sheathed on the outer barrel
(3) in, the upper end of the upper jarring body (4), the lower end of the lower jarring body (5) be respectively used to top connection described in jarring (2) and
The lower contact (1)；
The sealing element (6) is sleeved on the lower jarring body (5), for sealing in the lower jarring body (5) and the path
Annular gap between chamber section (301), and the outer diameter of the sealing element (6) is less than the internal diameter of major diameter inner cavity section (302)；
The upper elastic component (7) is arranged on the pressure intracavitary that the upper jarring body (4) is formed with path inner cavity section (301),
And top and bottom offset respectively with the top connection (2) and the lower jarring body (5)；
The lower elastic component (8) is arranged in the pressure-releasing chamber that the lower jarring body (5) is formed with the outer barrel (3), and upper end
It offsets respectively with the lower jarring body (5) and the lower contact (1) with lower end；
The relief hole (3021) for connecting the pressure-releasing chamber is provided on the wall of the major diameter inner cavity section (302).
2. hydraulic shock device according to claim 1, which is characterized in that the upper end of the upper jarring body (4) is arranged to down
Corner structure.
3. hydraulic shock device according to claim 1, which is characterized in that the upper end of the lower jarring body (5) is provided with slotting
Hole, the lower end of the upper jarring body (4) are detachably connected with the jack.
4. hydraulic shock device according to claim 3, which is characterized in that the lower end screw thread socket of the upper jarring body (4)
In the jack.
5. hydraulic shock device according to claim 3, which is characterized in that the upper end of the outer barrel (3) is sleeved on described
In top connection (2)；
The top connection (2), which is located on the internal outer wall of the outer barrel (3), is provided with the first limited step；
The top and bottom of the upper elastic component (7) respectively with first limited step and the upper end of the lower jarring body (5)
It offsets.
6. hydraulic shock device according to claim 1, which is characterized in that be provided on the outer wall of the lower jarring body (5)
Second limited step；
The lower end of the outer barrel (3) is sleeved in the lower contact (1), and the lower contact (1) is located in the outer barrel (3)
The 3rd limited step is provided on the outer wall in portion；
The top and bottom of the lower elastic component (8) offset respectively with second limited step and the 3rd limited step.
7. hydraulic shock device according to claim 1, which is characterized in that the upper elastic component (7) and the lower elastic component
(8) multiple springs to be placed on vertically respectively in the pressure chamber and the pressure-releasing chamber.
8. hydraulic shock device according to claim 1, which is characterized in that the upper elastic component (7) and the lower elastic component
(8) to be set in a spring on the upper jarring body (4) and the lower jarring body (5).
9. hydraulic shock device according to claim 1, which is characterized in that be provided on the outer wall of the lower jarring body (5)
Annular groove, the sealing element (6) are removably mounted in the annular groove.
10. hydraulic shock device according to claim 1, which is characterized in that the top connection (2) and the outer barrel (3)
Between, between the outer barrel (3) and the lower contact (1) be to be detachably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721443531.3U CN207436982U (en) | 2017-11-02 | 2017-11-02 | Hydraulic jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721443531.3U CN207436982U (en) | 2017-11-02 | 2017-11-02 | Hydraulic jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207436982U true CN207436982U (en) | 2018-06-01 |
Family
ID=62290885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721443531.3U Active CN207436982U (en) | 2017-11-02 | 2017-11-02 | Hydraulic jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207436982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379539A (en) * | 2018-12-28 | 2020-07-07 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
-
2017
- 2017-11-02 CN CN201721443531.3U patent/CN207436982U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379539A (en) * | 2018-12-28 | 2020-07-07 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
| CN111379539B (en) * | 2018-12-28 | 2022-05-10 | 中国石油天然气股份有限公司 | Starting vibration steam distribution valve |
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