CN201334882Y - Tool for drawing valve seat - Google Patents
Tool for drawing valve seat Download PDFInfo
- Publication number
- CN201334882Y CN201334882Y CNU2009200835068U CN200920083506U CN201334882Y CN 201334882 Y CN201334882 Y CN 201334882Y CN U2009200835068 U CNU2009200835068 U CN U2009200835068U CN 200920083506 U CN200920083506 U CN 200920083506U CN 201334882 Y CN201334882 Y CN 201334882Y
- Authority
- CN
- China
- Prior art keywords
- valve seat
- pawl
- drawing pawl
- hydraulic cylinder
- pull bar
- 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.)
- Expired - Lifetime
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- Mechanically-Actuated Valves (AREA)
Abstract
A tool for drawing a valve seat comprises a drawing claw and a pulling rod. The drawing claw under the action of gravity can be vertically arranged in the valve seat and opened under the action of gravity, and then fastens the valve seat; the pulling rod is screwed into the valve seat; a hydraulic cylinder body, a pressure screw gasket plate, and a pressure nut are sequentially sleeved on the pulling rod; a hydraulic pump is connected; and a manual hydraulic pump is controlled, so that the valve seat can be drawn out. The utility model has the advantages of simple structure, convenience, practicality, convenient production, and low cost. Particularly, the drawing tool is matched with a dedicated hydraulic cylinder to realize that the valve seat can be drawn out of equipment by just one person, and is particularly applicable to the dismounting operation of the valve seat in the well drilling.
Description
Technical field
The utility model relates to a kind of used drawing device of tight fit parts that separates, a kind of specifically valve seat drawing device.
Background technology
In oil field operation, particularly in the operations such as reinforcing oil well, pressure break, acidifying, sand control, the pressure and the impact load that bear along with valve seat in the pump head body constantly increase, because valve seat tightly is pressed in the pump head body, bring great difficulty therefore for the dismounting of valve seat again.It is the form of structure that is provided with grapple or moving block form hook grapple structure in drawing pawl axial groove that the drawing device that present dismounting valve seat uses adopted more, its structure is comparatively complicated, factors such as effective load area of drawing pawl can not make full use of this lower surface area with very limited valve seat, and the restriction of its structural volume and force part are many have also influenced portability, agility or even the feasibility of drawing valve seat.
Summary of the invention
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and a kind of valve seat drawing device is provided, and its drawing pawl simplicity of design, light small and exquisite, cooperate special hydraulic jack and oil pump, the valve seat that people can finish on the equipment is extracted operation.
The purpose of this utility model realizes by following technical measures: a kind of valve seat drawing device, comprise drawing pawl and pull bar, its described drawing pawl is cylindric, cylinder inner surface is provided with screw thread, be provided with opening at the cylinder middle part, the drawing pawl is divided into two parts along opening, and the upper end of drawing pawl is provided with a cell body, be fixed with constraint two parts drawing pawl in the cell body and do not take off the clasp lock of pine, drawing pawl lower end is provided with flange; Described pull bar is connected with the drawing pawl by its lower end screw thread.
In technique scheme, described opening is up-small and down-big shape.
In technique scheme, described pull bar top is with hydraulic cylinder from top to bottom successively, pressure nut backing plate and pressure nut, and described hydraulic cylinder links to each other with hydraulic pump.
The utility model can reach the purpose of extracting valve seat by structure designs such as split type, flange, its simplicity of design, convenient and practical, and it is convenient to produce, with low cost, especially cooperate special hydraulic jack to use, the valve seat that people can finish on the equipment is like a dream extracted operation, the dismantlement work of valve seat in the very suitable oil field operation.
Description of drawings
Fig. 1 is the overall structure schematic diagram of a kind of valve seat drawing device of the utility model.
Fig. 2 is the structural representation of drawing pawl among the embodiment.
Fig. 3 is the structural representation of clasp lock in the utility model.
View when Fig. 4 enters valve seat for the utility model drawing pawl.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of valve seat drawing device comprises drawing pawl 1 and pull bar 2, and described drawing pawl 1 is cylindric, and cylinder inner surface is provided with screw thread, is provided with opening 10 at the cylinder middle part, and described opening 10 can be the up-small and down-big shape shown in Fig. 2.
The upper end of drawing pawl 1 is provided with a cell body 3, be fixed with constraint two parts drawing pawl 1 in the cell body 3 and do not take off the clasp lock 4 of pine, after drawing pawl 1 is put into the valve seat centre, clasp is locked contact valve seat upper surface, 4 lower surfaces, and holding up drawing pawl 1, drawing pawl 1 freely opens under action of gravity, at this moment, be formed centrally a complete screw thread in the drawing pawl 1.
Drawing pawl 1 lower end is provided with flange 5, and flange 5 is buckled on the valve seat lower surface when drawing pawl 1 freely opens.
Described pull bar 2 is connected with drawing pawl 1 by its lower end screw thread.
When using this drawing device, at first drawing pawl 1 is put into valve seat, drawing pawl 1 can be free under action of gravity from above vertically put into valve seat, the back struts under action of gravity and fastens valve seat by flange 5, is screwed into pull bar 2 then in screw thread, and on pull bar 2, put hydraulic cylinder 6 successively, pressure nut backing plate 7, pressure nut 8, and on hydraulic cylinder 6, connect hydraulic pump 9, control hydraulic hand-pump 9 is to reach the purpose of extracting valve seat.
Claims (3)
1. valve seat drawing device, comprise drawing pawl (1) and pull bar (2), it is characterized in that: described drawing pawl (1) is cylindric, cylinder inner surface is provided with screw thread, be provided with opening (10) at the cylinder middle part, drawing pawl (1) is divided into two parts along opening (10), and the upper end of drawing pawl (1) is provided with a cell body (3), be fixed with the clasp lock (4) that constraint two parts drawing pawls (1) do not take off pine in the cell body (3), drawing pawl (1) lower end is provided with flange (5); Described pull bar (2) is connected with drawing pawl (1) by its lower end screw thread.
2. a kind of valve seat drawing device according to claim 1 is characterized in that: described opening (10) is up-small and down-big shape.
3. a kind of valve seat drawing device according to claim 1, it is characterized in that: described pull bar (2) top is with hydraulic cylinder (6) from top to bottom successively, pressure nut backing plate (7) and pressure nut (8), described hydraulic cylinder (6) links to each other with hydraulic pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200835068U CN201334882Y (en) | 2009-01-20 | 2009-01-20 | Tool for drawing valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200835068U CN201334882Y (en) | 2009-01-20 | 2009-01-20 | Tool for drawing valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201334882Y true CN201334882Y (en) | 2009-10-28 |
Family
ID=41286532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200835068U Expired - Lifetime CN201334882Y (en) | 2009-01-20 | 2009-01-20 | Tool for drawing valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201334882Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515898A (en) * | 2020-05-28 | 2020-08-11 | 烟台杰瑞石油装备技术有限公司 | Valve seat drawing tool |
| CN112548941A (en) * | 2020-12-22 | 2021-03-26 | 中国石油天然气集团有限公司 | Hydraulically acting valve seat puller and use method thereof |
-
2009
- 2009-01-20 CN CNU2009200835068U patent/CN201334882Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111515898A (en) * | 2020-05-28 | 2020-08-11 | 烟台杰瑞石油装备技术有限公司 | Valve seat drawing tool |
| CN112548941A (en) * | 2020-12-22 | 2021-03-26 | 中国石油天然气集团有限公司 | Hydraulically acting valve seat puller and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091028 |
|
| CX01 | Expiry of patent term |