CN201747307U - Automatic connecting drill rod slurry interceptor - Google Patents
Automatic connecting drill rod slurry interceptor Download PDFInfo
- Publication number
- CN201747307U CN201747307U CN2010202909139U CN201020290913U CN201747307U CN 201747307 U CN201747307 U CN 201747307U CN 2010202909139 U CN2010202909139 U CN 2010202909139U CN 201020290913 U CN201020290913 U CN 201020290913U CN 201747307 U CN201747307 U CN 201747307U
- Authority
- CN
- China
- Prior art keywords
- valve body
- reducing
- spring
- sliding bush
- outside
- 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 - Fee Related
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- Earth Drilling (AREA)
Abstract
An automatic connecting drill rod slurry interceptor is provided. An upper end of a casing is provided with female drill rod threads; a lower end of the casing is provided with male drill rod threads; a valve body is mounted under the female drill rod threads on the upper end of the casing; a valve port in a reducing slide sleeve fits with the valve body; a reducing shoulder is outside the reducing slide sleeve which has a bigger upper portion and a smaller lower portion; the outside of the reducing slide sleeve fits with an inner hole of the valve body; a spring is mounted under the reducing shoulder outside the reducing slide sleeve; an upper end of the spring supports the reducing slide sleeve; a lower end of the spring sits on an inner hole shoulder of the valve body; and a cavity for mounting the spring is communicated with the outside of the casing through a discharge hole. When a pump is stopped to load/unload a drill rod, the valve portion in the reducing slide sleeve fits with the valve body to block a valve body passageway, so that slurry on the casing will not flow down, and the slurry can be intercepted without manual operation; moreover, equipment will not be damaged by pump block and physical injury accidents will not happen due to an error operation. The interceptor has obvious economic and social benefits.
Description
Technical field
The utility model belongs to the instrument of the on-the-spot usefulness of oil drilling, particularly a kind of stacks mud automatic cut-off device.
Background technology
In drilling well work, kelly bar must be dismantled during stacks again and be connected with single drilling rod, the mud in this moment kelly bar can flow out, and traditional solution is to utilize plug valve to block the outflow of mud, the switch cock valve is by manually-operated, except that labour intensity greatly, also need to use special tool, the special tool well of accidentally dropping appears sometimes, cause the Important Project accident, also operate miss can occur, cause the pump damage equipment of spraining, also can cause personal injury accidents sometimes.
Summary of the invention
The purpose of this utility model is a kind of stacks mud automatic cut-off device of design, and the mud in the kelly bar can flow out, and does not need the manually-operated mud that just can dam, and avoids taking place engineering accident and personal injury accident.
The purpose of this utility model is achieved in that by housing, valve body, spring, reducing sliding bush is formed, there is the drilling rod box thread housing upper end, there is the drilling rod male thread housing lower end, valve body is installed under the drilling rod box thread of housing upper end, valve port cooperates with valve body in the reducing sliding bush, there is the reducing shoulder reducing sliding bush outside, the reducing sliding bush upper diameter is big, the reducing sliding bush lower diameter is little, reducing sliding bush is outside to be cooperated with valve body inner bore, mounting spring under the outside reducing shoulder of reducing sliding bush, and reducing sliding bush is supported in the spring upper end, spring lower end seat is on the valve body inner bore shoulder, and the cavity of mounting spring is by discharge orifice and hull outside UNICOM.
The beneficial effects of the utility model are: during termination of pumping loading and unloading drilling rod, pressure on the housing descends, reducing sliding bush is pushed into valve body by spring and contacts, valve port cooperates the obstruction valve channel in the reducing sliding bush with valve body, mud on the housing can not flow out downwards, do not need the manually-operated mud that just can dam, do not exist the special tool well of accidentally dropping to cause the problem of Important Project accident, can not occur because of the operate miss pump damage equipment of spraining, can not occur having remarkable economic efficiency and social benefit because of operate miss generation personal injury accident yet.
Description of drawings
Accompanying drawing is an assembling drawing of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
As seen from the figure, embodiment of the present utility model is by housing 1, valve body 2, spring 3, reducing sliding bush 4, globe stop valve 5 is formed, there is the drilling rod box thread housing 1 upper end, be used for being connected with the kelly bar lower end, there is the drilling rod male thread housing 1 lower end, be connected with drilling rod, valve body 2 is installed under the housing 1 upper end drilling rod box thread, valve port cooperates with valve body 2 in the reducing sliding bush 4, there is the reducing shoulder reducing sliding bush 4 outsides, reducing sliding bush 4 upper diameter are big, and reducing sliding bush 4 lower diameter are little, and reducing sliding bush 4 outsides cooperate with valve body 2 endoporus, mounting spring 3 under the reducing sliding bush 4 outside reducing shoulders, reducing sliding bush 4 is supported in spring 3 upper ends, and spring 3 lower end seats are on valve body 2 endoporus shoulders, and the cavity of mounting spring 3 is by discharge orifice 6 and housing 1 outside UNICOM.Globe stop valve 5 is installed in housing 1 bottom, is used to prevent blowout.
During termination of pumping loading and unloading drilling rod, the pressure on the housing 1 descends, and reducing sliding bush 4 is pushed into valve body 2 by spring 3 and contacts, and valve port cooperates the passage that stops up valve body 2 in the reducing sliding bush 4 with valve body 2, and the mud on the housing 1 can not flow out downwards.When turn on pump need pass through mud, mud pressure makes reducing sliding bush 4 produce downward thrust, reducing sliding bush 4 descending and compression springs 3, spring 3 energy storage, the energy of spring 3 savings promotes reducing sliding bush 4 up blocking channels when being used for termination of pumping loading and unloading drilling rod, and the mud on the housing 1 can not flow out downwards.
Claims (2)
1. stacks mud automatic cut-off device, by housing (1), valve body (2), spring (3), reducing sliding bush (4) is formed, there is the drilling rod box thread housing (1) upper end, there is the drilling rod male thread housing (1) lower end, it is characterized in that: valve body (2) is installed under the drilling rod box thread of housing (1) upper end, the interior valve port of reducing sliding bush (4) cooperates with valve body (2), there is the reducing shoulder reducing sliding bush (4) outside, reducing sliding bush (4) upper diameter is big, reducing sliding bush (4) lower diameter is little, reducing sliding bush (4) is outside to be cooperated with valve body (2) endoporus, mounting spring (3) under the outside reducing shoulder of reducing sliding bush (4), reducing sliding bush (4) is supported in spring (3) upper end, and spring (3) lower end seat is on valve body (2) endoporus shoulder, and the cavity of mounting spring (3) is by discharge orifice (6) and the outside UNICOM of housing (1).
2. stacks mud automatic cut-off device according to claim 1 is characterized in that: globe stop valve (5) is installed in housing (1) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202909139U CN201747307U (en) | 2010-08-06 | 2010-08-06 | Automatic connecting drill rod slurry interceptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202909139U CN201747307U (en) | 2010-08-06 | 2010-08-06 | Automatic connecting drill rod slurry interceptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747307U true CN201747307U (en) | 2011-02-16 |
Family
ID=43581990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202909139U Expired - Fee Related CN201747307U (en) | 2010-08-06 | 2010-08-06 | Automatic connecting drill rod slurry interceptor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762959A (en) * | 2015-03-13 | 2015-07-08 | 宫能和 | Mixing pile construction device |
-
2010
- 2010-08-06 CN CN2010202909139U patent/CN201747307U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762959A (en) * | 2015-03-13 | 2015-07-08 | 宫能和 | Mixing pile construction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20110806 |