CN202000951U - Spring type flashboard locking mechanism - Google Patents
Spring type flashboard locking mechanism Download PDFInfo
- Publication number
- CN202000951U CN202000951U CN2011200568721U CN201120056872U CN202000951U CN 202000951 U CN202000951 U CN 202000951U CN 2011200568721 U CN2011200568721 U CN 2011200568721U CN 201120056872 U CN201120056872 U CN 201120056872U CN 202000951 U CN202000951 U CN 202000951U
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- CN
- China
- Prior art keywords
- locking
- flashboard
- spring
- threads
- shaft
- 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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Abstract
The utility model discloses a spring type flashboard locking mechanism, which comprises a locking shaft arranged on a flashboard shaft, wherein the outwards exposed end of the locking shaft is connected with a locking block through a bolt in an embedding way; locking threads fit with a cylinder end are arranged on the locking block; and a spring is positioned and fixed at the embedding end of the locking shaft. The spring type flashboard locking mechanism is applied to a flashboard blowout preventer and is a safe auxiliary device. After hydraulic pressure is closed, a flashboard can be manually closed, so that the flashboard is prevented from being opened accidentally after the hydraulic pressure is discharged. The locking threads on the locking block can be the locking threads with large diameter, so that the length of the threads and the required rotation turns can be reduced, and the aim of saving time and labour is fulfilled. The mechanism is convenient to operate. In addition, the strength of the locking threads with large diameter is high, so the mechanism is not easy to damage, is safer and more reliable and has relatively high practicability.
Description
Technical field
The utility model relates to a kind of well-control equipment parts, particularly a kind of spring flashboard retaining mechanism.
Background technology
The important device that ram preventer is pressed as control well; its basic purposes is can be effectively in drilling well, well workover and pilot production process, reliably, promptly the control well mouth pressure, close well head; can prevent blowout effectively, protection oil well surrounding environment and personal safety realize civilization and safe construction.
The utility model content
The purpose of this utility model provides a kind of spring flashboard retaining mechanism that is applied to ram preventer, has safe and reliable, time saving and energy saving characteristics.
For achieving the above object, by the following technical solutions:
A kind of spring flashboard retaining mechanism comprises the lock shaft that is installed on the flashboard axis, and described lock shaft exposed junction is by the nested latch segment that is connected with of latch, and described latch segment is provided with the locking screw supporting with cylinder head; The built-in end positioning and fixing of described lock shaft has spring.
Preferably, the nominal diameter of locking screw described in the utility model is greater than 150mm.
Optionally, spring is located by baffle ring described in the utility model.
Optionally, spring is fixed by circlip described in the utility model.
The utility model is the safe servicing unit of ram preventer, after hydraulic pressure is closed, can lock flashboard with manual mode, prevents that hydraulic pressure from laying down back flashboard accident and opening; Locking screw on the latch segment can adopt the major diameter locking screw, thereby can reduce reach and need rotating cycle, reaches time saving and energy saving purpose, and easy to operate; In addition, the major diameter locking screw has bigger intensity, and is in use not fragile, strengthened the safety and reliability of product, and practicality is improved.
Description of drawings
According to embodiment and accompanying drawing the utility model is described in further detail below.
Fig. 1 is the sectional view of the described spring flashboard of the utility model embodiment retaining mechanism before locking.
Among the figure:
1, flashboard axis; 2, lock shaft; 3, latch; 4, latch segment; 5, cylinder head; 6, locking screw; 7, baffle ring; 8, circlip; 9, spring.
The specific embodiment
Below in conjunction with accompanying drawing, further specify the utility model by embodiment.
As shown in Figure 1, spring flashboard retaining mechanism described in the utility model, comprise the lock shaft 2 that is installed on the flashboard axis 1, described lock shaft 2 exposed junctions are by the columned latch 3 nested latch segments 4 that are connected with, described latch segment 4 be provided with the supporting nominal diameter of cylinder head 5 be the locking screw 6 of 152.4mm; The built-in end of described lock shaft 2 is with the spring of fixing by baffle ring 7 location and circlip 89.
During locking, apply hydraulic pressure earlier and close flashboard, flashboard axis 1 drives lock shaft 2 by spring 9 and latch segment 4 moves to the centre bore direction, touch the screwed hole of cylinder head 5 when latch segment 4 after, latch segment 4 and lock shaft 2 stop to move, but flashboard axis 1 continues to move until flashboard sealing tubing string or full shut-in well mouth to the centre bore direction, spring 9 by compression at this moment, lock shaft 2 then turns clockwise, drive latch segment 4 inside precessions, withstand flashboard axis 1 rear end face until latch segment 4 front end faces, realize locking, this moment, hydraulic pressure can release.During release, be rotated counterclockwise lock shaft 2, drive latch segment 4 and outwards screw out, break away from, apply hydraulic pressure then and release flashboard axis 1, drive lock shaft 2 and latch segment 4 and get back to initial position, realize release until latch segment 4 and cylinder head 5.In whole locking or release stroke, have only wherein one section to be that latch segment 4 contacts with cylinder head 5, drive latch segments 4 by rotation lock mandrel 2 and move and realize locking or release, compare with the conventional retaining mechanism of prior art, its lock portion effect screw thread is shorter, but diameter is big, need the number of turns of rotation few, time saving and energy saving, and safe and reliable, convenient to operation, concrete comparing result is as shown in table 1:
Table 1
As known from Table 1, embodiments of the invention are by adopting the major diameter screw thread, can effectively reduce reach and significantly reduce rotating cycle under the constant situation of lock shaft stroke keeping, and realize time saving and energy saving purpose; Simultaneously, along with the increase of the diameter of thread, intensity also improves thereupon, has strengthened the safety and reliability of product, has effectively prolonged application life.
Claims (4)
1. a spring flashboard retaining mechanism is characterized in that, comprises the lock shaft that is installed on the flashboard axis, and described lock shaft exposed junction is by the nested latch segment that is connected with of latch, and described latch segment is provided with the locking screw supporting with cylinder head; The built-in end positioning and fixing of described lock shaft has spring.
2. spring flashboard retaining mechanism according to claim 1 is characterized in that the nominal diameter of described locking screw is greater than 150mm.
3. spring flashboard retaining mechanism according to claim 1 is characterized in that described spring is located by baffle ring.
4. spring flashboard retaining mechanism according to claim 1 is characterized in that described spring is fixed by circlip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200568721U CN202000951U (en) | 2010-12-31 | 2011-03-04 | Spring type flashboard locking mechanism |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020701170 | 2010-12-31 | ||
| CN201020701170.X | 2010-12-31 | ||
| CN2011200568721U CN202000951U (en) | 2010-12-31 | 2011-03-04 | Spring type flashboard locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000951U true CN202000951U (en) | 2011-10-05 |
Family
ID=44703696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200568721U Expired - Lifetime CN202000951U (en) | 2010-12-31 | 2011-03-04 | Spring type flashboard locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121360A (en) * | 2010-12-31 | 2011-07-13 | 承德市开发区富泉石油机械有限公司 | Spring type gate locking mechanism |
-
2011
- 2011-03-04 CN CN2011200568721U patent/CN202000951U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121360A (en) * | 2010-12-31 | 2011-07-13 | 承德市开发区富泉石油机械有限公司 | Spring type gate locking mechanism |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |