CN203499633U - Screw one-way bypass valve - Google Patents
Screw one-way bypass valve Download PDFInfo
- Publication number
- CN203499633U CN203499633U CN201320321281.1U CN201320321281U CN203499633U CN 203499633 U CN203499633 U CN 203499633U CN 201320321281 U CN201320321281 U CN 201320321281U CN 203499633 U CN203499633 U CN 203499633U
- Authority
- CN
- China
- Prior art keywords
- rod
- screw
- bypass valve
- valve
- interior shoulder
- 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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Abstract
The utility model discloses a screw one-way bypass valve, which comprises a body, a valve rod, a spring and a screw cap, wherein a connecting thread is arranged on the outer tube wall of the body; the body is provided with a hollow cavity; an inner shoulder is arranged on the middle part of the inner wall of the body; the valve rod has a T-shaped structure, and comprises a sealed end and a rod body; a thread matched with the screw cap is arranged at the end, away from the sealed end, of the rod body; the spring is sleeved on the rod body between the inner shoulder and the screw cap. The screw one-way bypass valve is at an open position during trip-out, and drilling fluid in a water hole of a drilling tool can flow into an annulus, so that normal construction is ensured; the screw one-way bypass valve is at a closed position during running, drilling, connection making and pump stopping, so that impurities such as annulus mud sand and a thread membrane are effectively prevented from entering the water hole of the drilling tool through a valve port of the screw one-way bypass valve, the number of screw drill bit replacement times during trip-out and running is reduced, and the drilling time is saved; the bypass valve is stable in structure and high in operation efficiency.
Description
Technical field
The utility model relates to a kind of instrument of drilling-production equipment, is specifically related to a kind of by-pass valve of screwdrill.
Background technology
By-pass valve of screwdrill is one of parts that form helicoid hydraulic motor, and by-pass valve of screwdrill in opening position, makes the interior drilling fluid of drill string communicate with annular space rising, during lower brills.Chinese patent literature ZL200820174984.5 discloses a kind of by-pass valve of screwdrill, valve body, spool, spring, valve port and jump ring, consists of.Its bypass valve valve port has a filter screen, and be two-way straight-through, at lower brill, creep into, make up a joint, during termination of pumping, the impurity such as down-hole annular silt particle, screw thread film can enter by the valve port of screw rod bypass valve in drilling tool water hole, cause screw deadlocking, screw rod to damage in advance, bit port blocks, the directional well instrumentation card in drilling tool water hole is waited indefinitely accident, bring huge economic loss.
Utility model content
The purpose of this utility model is to provide a kind of Stability Analysis of Structures, the unidirectional bypass valve of screw rod that operating efficiency is high.
For achieving the above object, the utility model is by the following technical solutions:
The unidirectional bypass valve of screw rod, comprises body, valve rod, spring, nut, and wherein, body outer tube wall is provided with connecting thread, and described body is provided with the cavity of hollow, and described body is provided with interior shoulder in inwall middle part; Described valve rod is T-shaped structure, described valve rod comprises sealed end and the body of rod, the external diameter of described sealed end is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, the external diameter of the described body of rod is less than the internal diameter of interior shoulder, the described body of rod is provided with away from one end of sealed end the screw thread matching with described nut, and the external diameter of described nut is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Described spring housing is contained on the body of rod between interior shoulder and nut.
The described body of rod is provided with the righting board that is evenly equipped with through hole between interior shoulder and spring.
On the table top of described interior shoulder near sealed end, offer seal groove, in described seal groove, be provided with sealing ring.
Hexagonal structure in one end tool joining with helicoid hydraulic motor on described body.
By-pass valve of screwdrill of the present utility model is one way valve, and when pulling out of hole, one way valve is in opening position, and the drilling fluid in drilling tool water hole can flow in annular space, guarantees normal construction; At lower brill, creep into, make up a joint, during termination of pumping, one way valve is in off-position, effectively stop the impurity such as annular space silt particle, screw thread film to enter in drilling tool water hole by the valve port of screw rod bypass valve, reduced, lower brill changes screw rod drill bit number of times, saved drilling time, the Stability Analysis of Structures of this bypass valve, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the utility model.
The specific embodiment
Embodiment of the present utility model, as shown in Figure 1: the unidirectional bypass valve of screw rod, comprises body 1, valve rod, righting board 4, spring 5, nut 6.Wherein, body 1 outer tube wall is provided with connecting thread, and body 1 is provided with the cavity of hollow, hexagonal structure in one end tool joining with helicoid hydraulic motor on body 1, and body 1 is provided with interior shoulder in inwall middle part; Valve rod is T-shaped structure, valve rod comprises sealed end 3a and body of rod 3b, the external diameter of sealed end 3a is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, the external diameter of body of rod 3b is less than the internal diameter of interior shoulder, body of rod 3b is provided with away from one end of sealed end 3a the screw thread matching with nut 6, and the external diameter of nut 6 is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Spring 5 is sleeved on the body of rod 3b between interior shoulder and nut 6.Body of rod 3b is provided with the righting board 4 that is evenly equipped with through hole 4a between interior shoulder and spring 5, and righting board 4 can pass through drilling fluid, also can limit radially scope of activities of valve rod.On the table top of interior shoulder near sealed end (3a), offer seal groove, be provided with sealing ring 2 in seal groove, the interior hexagonal structure of body 1 is convenient to its handling on helicoid hydraulic motor.
During installation, first sealing ring 2 is arranged in seal groove, then valve rod is sidelong in body 1 cavity by sealing ring one, from the opposite side of body 1 cavity, righting board 4, spring 5, nut 6 are installed successively, by connecting thread, this device is arranged on helicoid hydraulic motor.Screw rod makes up a joint in lower brill or drilling process, during termination of pumping, the sealed end 3a of the utility model valve rod is under the elastic force effect of annular space drilling liquid pressure and spring 5, by sealing ring 2, be combined with the interior shoulder of body 1, this device is closed, and stops the impurity such as down-hole annular silt particle, screw thread film to enter in drilling tool water hole by bypass valve; Screw rod, when pulling out of hole, under the effect of sealed end 3a drilling liquid pressure in drilling tool of the utility model valve rod, drives nut 6 Compress Springs 5 separated with the interior shoulder of body 1, and this device is opened, and the drilling fluid in drilling tool enters in annular space by device.
Claims (4)
1. the unidirectional bypass valve of screw rod, comprise body (1), valve rod, spring (5), nut (6), wherein, body (1) outer tube wall is provided with connecting thread, it is characterized in that: described body (1) is provided with the cavity of hollow, described body (1) is provided with interior shoulder in inwall middle part; Described valve rod is T-shaped structure, described valve rod comprises sealed end (3a) and the body of rod (3b), the external diameter of described sealed end (3a) is less than the internal diameter of cavity and is greater than the internal diameter of interior shoulder, the external diameter of the described body of rod (3b) is less than the internal diameter of interior shoulder, the described body of rod (3b) is provided with away from one end of sealed end (3a) the screw thread matching with described nut (6), and the external diameter of described nut (6) is greater than the internal diameter of interior shoulder and is less than the internal diameter of cavity; Described spring (5) is sleeved on the body of rod (3b) between interior shoulder and nut (6).
2. the unidirectional bypass valve of screw rod according to claim 1, is characterized in that: the described body of rod (3b) is provided with the righting board (4) that is evenly equipped with through hole (4a) between interior shoulder and spring (5).
3. the unidirectional bypass valve of screw rod according to claim 2, is characterized in that: on the table top of described interior shoulder near sealed end (3a), offer seal groove, be provided with sealing ring (2) in described seal groove.
4. according to the unidirectional bypass valve of screw rod described in claim 1 or 2 or 3, it is characterized in that: hexagonal structure in one end tool that described body (1) is upper and helicoid hydraulic motor joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320321281.1U CN203499633U (en) | 2013-06-05 | 2013-06-05 | Screw one-way bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320321281.1U CN203499633U (en) | 2013-06-05 | 2013-06-05 | Screw one-way bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499633U true CN203499633U (en) | 2014-03-26 |
Family
ID=50330622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320321281.1U Expired - Fee Related CN203499633U (en) | 2013-06-05 | 2013-06-05 | Screw one-way bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060233A (en) * | 2015-07-15 | 2015-11-18 | 广西宏发重工机械有限公司 | Slurry delivering device |
-
2013
- 2013-06-05 CN CN201320321281.1U patent/CN203499633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060233A (en) * | 2015-07-15 | 2015-11-18 | 广西宏发重工机械有限公司 | Slurry delivering device |
| CN105060233B (en) * | 2015-07-15 | 2018-09-21 | 广西宏发重工机械有限公司 | A kind of slurry delivery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |