CN112746824A - Movable slip type fishing head for pulling out plunger pump valve seat - Google Patents
Movable slip type fishing head for pulling out plunger pump valve seat Download PDFInfo
- Publication number
- CN112746824A CN112746824A CN202110104558.4A CN202110104558A CN112746824A CN 112746824 A CN112746824 A CN 112746824A CN 202110104558 A CN202110104558 A CN 202110104558A CN 112746824 A CN112746824 A CN 112746824A
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- CN
- China
- Prior art keywords
- fishing head
- valve seat
- plunger pump
- slip type
- inner wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009434 installation Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Reciprocating Pumps (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a movable slip type fishing head for pulling a plunger pump valve seat, which comprises a screw rod and a fishing head, wherein the fishing head comprises two inner screw slips and two semicircular rings, and a valve body is sleeved outside the fishing head; the lower end of the screw rod is inserted between the two inner wire slips, then the two semicircular rings are inwards contracted to fix the two inner wire slips, and the valve body is sleeved outside the two inner wire slips and is positioned below the two semicircular rings. The movable slip type fishing head for pulling out the plunger pump valve seat has the advantages of simple and compact structure, good interchangeability of spare and accessory parts, high strength, long service life, quick operation, good effect and quick installation.
Description
Technical Field
The invention relates to the technical field of (fracturing truck and pry) plunger pump valve seat pulling tools, in particular to a movable slip type fishing head for pulling a prying plunger pump valve seat.
Background
The invention relates to a special equipment (a fracturing truck and a pry) plunger pump valve seat pulling tool, which is suitable for a fracturing plunger pump valve seat maintenance place.
The oil field fracturing truck and the prying plunger pump hydraulic end valve seat pulling device have the defects of complex installation operation, brittle fracture residue in pulling, heaviness in structural design, insufficient strength, incapability of pulling out, quick tool damage and the like in various and non-uniform use.
The hydraulic end valve seat works in a pressed state and needs to be regularly checked and replaced due to working media or materials of the hydraulic end valve seat. The pulling device has the advantages of being capable of rapidly and reliably completing pulling and replacing of the valve seat, high in timeliness, long in service life and convenient to operate.
Disclosure of Invention
Aiming at the technical defects, the invention provides the movable slip type fishing head for pulling the plunger pump valve seat, and solves the problems of complex installation operation, brittle crack residue in pulling, heavy structural design, insufficient strength, no pulling, quick tool damage and the like in various and non-uniform use of oil field fracturing trucks and plunger pump hydraulic end valve seat pulling devices.
The invention is realized by the following technical scheme: a movable slip type fishing head for pulling out a plunger pump valve seat comprises a screw rod and a fishing head, wherein the fishing head comprises two inner wire slips and two semicircular rings, and a valve body is sleeved outside the fishing head; the lower end of the screw rod is inserted between the two inner wire slips, then the two semicircular rings are inwards contracted to fix the two inner wire slips, and the valve body is sleeved outside the two inner wire slips and is positioned below the two semicircular rings.
Furthermore, the upper edges of the two inner wire slips are provided with arc-shaped grooves, and the arc-shaped grooves are matched with the two semicircular rings.
Furthermore, through holes are formed in two sides of the semicircular ring on one side, threaded holes corresponding to the through holes are formed in the inner end face of the semicircular ring on the other side, and hexagonal bolts are arranged between the two semicircular rings through the threaded holes and the through holes and used for fixing the two semicircular rings.
Furthermore, the lower end faces of the two inner wire slips are fixedly connected with limiting edge flanges, and the limiting edge flanges correspond to the lower end faces of the valve body.
Furthermore, the middle part of the screw rod is provided with a limiting shaft for limiting.
The invention has the beneficial effects that: the movable slip type fishing head for pulling out the plunger pump valve seat has the advantages of simple and compact structure, good interchangeability of spare and accessory parts, high strength, long service life, quick operation, good effect and quick installation.
Drawings
Fig. 1 is a schematic view of the overall structure of a movable slip type fishing head for pulling out a plunger pump valve seat according to the present invention;
fig. 2 is an assembly view of the fishing head and the valve body for pulling out the movable slip type fishing head from the valve seat of the plunger pump according to the present invention;
FIG. 3 is an enlarged view of A of FIG. 2 according to the present invention;
in the figure, 1, a screw rod; 2. fishing the head; 21. an internal thread slip; 22. a semicircular ring; 3. a valve body; 4. an arcuate groove; 5. a through hole; 6. a threaded hole; 7. a hexagon bolt; 8. a limit edge flange; 9. and a limiting shaft.
Detailed Description
As shown in fig. 1 to 3, a movable slip type fishing head for pulling out a plunger pump valve seat comprises a screw rod 1 and a fishing head 2, wherein the fishing head 2 comprises two inner wire slips 21 and two semicircular rings 22, and a valve body 3 is sleeved outside the fishing head 2; the lower extreme of lead screw 1 is pegged graft between two interior silk slips 21, then, with two semicircle ring 22 fixed two interior silk slips 21 of the inside shrink, cup joint the valve body 3 in the outside of two interior silk slips 21 and be located the below of two semicircle ring 22.
The end face of the screw rod 1 is provided with an internal thread, the two inner screw slips 21 are internally provided with external threads, and the two inner screw slips 21 and the screw rod 1 are connected through the internal threads and the external threads.
In this embodiment, the fishing head 2 is transferred and is met and hinder the internal contraction, easily puts into the valve body 3, and the lead screw 1 is detained the dead (salvage state) cooperation special spanner or pneumatic cylinder and is pulled out.
The upper edges of the two internal thread slips 21 are provided with an arched groove 4, the arched groove 4 is matched with the two semicircular rings 22, and then the two internal thread slips 21 are fixed through the two semicircular rings 22.
Through holes 5 are formed in two sides of the semicircular ring 22 on one side, threaded holes 6 corresponding to the through holes 5 are formed in the inner end face of the semicircular ring 22 on the other side, and hexagon bolts 7 are arranged between the two semicircular rings 22 through the threaded holes 6 and the through holes 5 and used for fixing the two semicircular rings 22.
The lower end faces of the two internal thread slips 21 are fixedly connected with limiting edge flanges 8, and the limiting edge flanges 8 correspond to the lower end faces of the valve bodies 3.
The middle part of the screw rod 1 is provided with a limit shaft 9 for limiting.
The theory of operation, at first, will relax two semicircle rings 22 through hex bolts 7, make two interior slips 21 open, put into two interior slips 21 with lead screw 1 between, two semicircle rings 22 with fishing head 2 are fixed through hex bolts 7, make two interior slips 21 fix lead screw 1, carry out the suit with the valve body 3 in fishing head 2's outside, and then make the cover can be quick, the reliable replacement of pulling out of accomplishing valve seat, the timeliness is high, long service life, the device is pulled out to simple operation.
In conclusion, the beneficial effects of the invention are as follows: the movable slip type fishing head for pulling out the plunger pump valve seat has the advantages of simple and compact structure, good interchangeability of spare and accessory parts, high strength, long service life, quick operation, good effect and quick installation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A movable slip type fishing head for pulling out a plunger pump valve seat is characterized by comprising a screw rod (1) and a fishing head (2), wherein the fishing head (2) comprises two inner wire slips (21) and two semicircular rings (22), and a valve body (3) is sleeved outside the fishing head (2); the lower end of the screw rod (1) is inserted between the two inner wire slips (21), then the two semicircular rings (22) are inwards contracted to fix the two inner wire slips (21), and the valve body (3) is sleeved outside the two inner wire slips (21) and is positioned below the two semicircular rings (22).
2. The valve seat pulling movable slip type fishing head for a plunger pump according to claim 1, characterized in that the upper edges of the two inner wire slips (21) are provided with an arcuate groove (4), and the arcuate groove (4) is matched with the two semicircular rings (22).
3. The movable slip type fishing head for pulling out a plunger pump valve seat is characterized in that through holes (5) are formed in two sides of the semicircular ring (22) on one side, threaded holes (6) corresponding to the through holes (5) are formed in the inner end face of the semicircular ring (22) on the other side, and hexagonal bolts (7) are arranged between the two semicircular rings (22) through the threaded holes (6) and the through holes (5) and used for fixing the two semicircular rings (22).
4. The pulling movable slip type fishing head for the plunger pump valve seat is characterized in that limiting edge flanges (8) are fixedly connected to the lower end faces of the two inner wire slips (21), and the limiting edge flanges (8) correspond to the lower end faces of the valve body (3).
5. The pulling movable slip type fishing head for the plunger pump valve seat according to claim 1, characterized in that a limiting shaft (9) for limiting is installed in the middle of the screw rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110104558.4A CN112746824B (en) | 2021-01-26 | 2021-01-26 | Movable slip type fishing head for pulling valve seat of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110104558.4A CN112746824B (en) | 2021-01-26 | 2021-01-26 | Movable slip type fishing head for pulling valve seat of plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112746824A true CN112746824A (en) | 2021-05-04 |
| CN112746824B CN112746824B (en) | 2024-07-19 |
Family
ID=75653162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110104558.4A Active CN112746824B (en) | 2021-01-26 | 2021-01-26 | Movable slip type fishing head for pulling valve seat of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112746824B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202125270U (en) * | 2011-07-01 | 2012-01-25 | 吉林省国泰石油开发有限公司 | Safe spear blanking plug |
| CN207620750U (en) * | 2017-12-19 | 2018-07-17 | 中石化石油工程技术服务有限公司 | A kind of kelly cock inside valve group extractor |
| CN211230340U (en) * | 2019-11-20 | 2020-08-11 | 赵恒� | Sucker rod overshot convenient to clean for well repair |
| CN112112594A (en) * | 2020-09-22 | 2020-12-22 | 朱鸿磊 | Petroleum instrument fishing device |
| CN214247261U (en) * | 2021-01-26 | 2021-09-21 | 中石化石油工程技术服务有限公司 | Movable slip type fishing head for pulling out plunger pump valve seat |
-
2021
- 2021-01-26 CN CN202110104558.4A patent/CN112746824B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202125270U (en) * | 2011-07-01 | 2012-01-25 | 吉林省国泰石油开发有限公司 | Safe spear blanking plug |
| CN207620750U (en) * | 2017-12-19 | 2018-07-17 | 中石化石油工程技术服务有限公司 | A kind of kelly cock inside valve group extractor |
| CN211230340U (en) * | 2019-11-20 | 2020-08-11 | 赵恒� | Sucker rod overshot convenient to clean for well repair |
| CN112112594A (en) * | 2020-09-22 | 2020-12-22 | 朱鸿磊 | Petroleum instrument fishing device |
| CN214247261U (en) * | 2021-01-26 | 2021-09-21 | 中石化石油工程技术服务有限公司 | Movable slip type fishing head for pulling out plunger pump valve seat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112746824B (en) | 2024-07-19 |
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