CN203145872U - Rear-assembled simple bypass valve for screw drilling tool - Google Patents
Rear-assembled simple bypass valve for screw drilling tool Download PDFInfo
- Publication number
- CN203145872U CN203145872U CN 201320141747 CN201320141747U CN203145872U CN 203145872 U CN203145872 U CN 203145872U CN 201320141747 CN201320141747 CN 201320141747 CN 201320141747 U CN201320141747 U CN 201320141747U CN 203145872 U CN203145872 U CN 203145872U
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- China
- Prior art keywords
- valve body
- hole
- spool
- valve
- bypass valve
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of oil drilling and manufacturing, in particular to a rear-assembled simple bypass valve for a screw drilling tool. The rear-assembled simple bypass valve comprises a valve body, a valve element, a spring and check rings. The valve element, the spring and the check rings are arranged in an inner cavity of the valve body. A positioning shoulder used for positioning the installation center of the spring is arranged at the male thread end of the valve body, and the check rings are arranged at the bottom of the matching portion of the valve body and the valve element. A stair hole is formed in the outer side of a through hole of the valve body, and a partition board, a screen plate, a partition board and a check ring are sequentially arranged from the connecting portion of the stair hole and the through hole to the outside of the stair hole. The rear-assembled simple bypass valve is simple in structure and easy to process and reduces production cost, and accessory replacement is convenient. A check ring groove in an inner hole of the male thread end is removed so that a male thread can be strengthened. Shell body breaking caused by stress concentration of the check ring groove can be avoided, and the rear-assembled core element is prevented from falling accidentally.
Description
Technical field
The utility model relates to oil drilling manufacturing technology field, relates in particular to a kind of helicoid hydraulic motor simple and easy bypass valve of rear installed.
Background technology
At present, when in the drilling engineering of petroleum gas, using the down-hole helicoid hydraulic motor, for the pressure inside and outside the balance drilling tool in the process of boring down, drilling mud in the drilling tool can be flowed in the pit shaft fast and can not take the ground pollution rig floor to, in drilling process, make drilling fluid become the machine power that promotes drill bit, generally in the combination of drilling tool, all have a drilling tool bypass valve, the spool of general drilling tool bypass valve, spring and valve seat and be to put into valve body successively from the first end of the public access of valve body, at the valve body inner edge circlip groove is set one, back-up ring is installed, to prevent spool, valve seat is fallen in the well, because the helicoid hydraulic motor that uses carries out well dynamic when creeping into, the weight of helicoid hydraulic motor is very big, and torque is very big when creeping into, so, when using present by-pass valve assembly, have following problem: existing bypass valve valve body male connecting thread root and valve body are not considered the structure that stress is eliminated, and fixing circlip groove of ending seat open with the inner edge of valve body male connecting thread root same position on, therefore cause stress all to concentrate on the root of valve body male connecting thread, the root intensity of valve body male connecting thread is descended, therefore and cause from this position fracture accident and often take place, after the fracture, not only helicoid hydraulic motor falls into the down-hole, and because the back-up ring of division of a ci poem body has lost effect, the interior spool of valve body assembly that does not have back-up ring, valve seat and spring also drop in the well together, cause the salvaging difficulty of parts; In addition, the through hole on the valve body plays the effect of external pressure in the balance, usually has the landwaste of bulk to enter the inner chamber of bypass valve, causes bypass valve to damage.
The utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and provides a kind of helicoid hydraulic motor to use the simple and easy bypass valve of rear installed, and the male thread end is strengthened, and prevents that spool from dropping, and avoids the bulk landwaste to enter in the bypass valve inner chamber.
The utility model for achieving the above object, by the following technical solutions:
A kind of helicoid hydraulic motor simple and easy bypass valve of rear installed, comprise valve body, spool, spring and back-up ring, described spool, spring and back-up ring are installed in the inner chamber of valve body, it is characterized in that: be provided with locating shoulder for the retainer spring mounting center at valve body male thread end, described back-up ring is located at valve body and bottom, the big end of spool cooperation place; Described valve body through hole be provided with shoulder hole outward, from the junction of described shoulder hole and through hole dividing plate, sieve plate, dividing plate and back-up ring are installed successively outside shoulder hole.
Preferably, the thread of male thread end and the binding site of valve body are provided with escape on the described valve body.
Preferably, the small end cooperation place of described valve body and spool is provided with sealing ring.
Preferably, the big end cooperation place of described valve body and spool is provided with sealing ring.
The beneficial effects of the utility model are: simple in structure being easy to of the utility model processed, reduce production costs, the replacing accessory is convenient, remove the circlip groove at male thread end endoporus place, male thread is strengthened, avoid concentrating the housing fracture that causes because of the stress at circlip groove place, the rear installed spool can avoid the accident of spool to drop; Can effectively eliminate the stress of valve body and drilling tool tie point root concentrates at the escape of the binding site setting of the thread of valve body male thread end and valve body; In the shoulder hole of valve body, step up sieve plate with dividing plate and fix with back-up ring, can prevent effectively that the bulk landwaste from entering in the bypass valve, promoted the application life of bypass valve.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure: 1, valve body; 2, spool; 3, spring; 4, sealing ring; 5, back-up ring; 6, back-up ring; 7, dividing plate; 8, sieve plate; 9, sealing ring; 10, sealing ring; 11, locating shoulder; 12, shoulder hole; 13, through hole; 14, spool bore.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment.As shown in Figure 1, a kind of helicoid hydraulic motor simple and easy bypass valve of rear installed, comprise valve body 1, spool 2, spring 3 and back-up ring 5, spool is provided with spool bore 14, described spool, spring and back-up ring are installed in the inner chamber of valve body, be provided with locating shoulder 11 for the retainer spring mounting center at valve body male thread end, described back-up ring is located at valve body and bottom, the big end of spool cooperation place, be specially, back-up ring is arranged in herein the circlip groove, and spool just has been fixed in the chamber of valve body like this, because the box thread end end wall of valve body is thicker, therefore, the phenomenon that can not occur rupturing.
In order to stop that oarse-grained landwaste enters into the inner chamber of valve body, the through hole 13 outer shoulder holes 12 that are provided with of described valve body, junction from described shoulder hole and through hole is equipped with dividing plate 7, sieve plate 8, dividing plate 7 and back-up ring 6 successively outside shoulder hole, back-up ring is fixed on sieve plate and dividing plate in the shoulder hole, two dividing plates add sieve plate and fasten, and sieve plate is provided with some and is used for stopping the circular hole that the bulky grain landwaste enters.The small end cooperation place of described valve body and spool is provided with sealing ring 9.The big end cooperation place of described valve body and spool is provided with sealing ring 4.
As further improvement of the utility model, the binding site of the thread of male thread end and valve body is provided with escape on the described valve body, and the upper end of escape is provided with sealing ring 10.
During installation, earlier sealing ring 9 is encased in locating shoulder 11 from valve body box thread end (lower end), the spool 2 of packing into successively then, spring 3 after installing, are loaded onto back-up ring 5 with fixed spool, then by-pass valve of screwdrill are connected G.I.H on the drilling tool.In the process of boring down, because slush pump does not start, there is not pressure, therefore spool 2 is opened under the effect of spring 3, the drilling mud that enters drilling tool in the well enters annular space by the through hole on spool bore and the valve body, play the effect of the inside and outside head of liquid of balance drilling tool, following brill finishes, begin to creep into, after slush pump started, drilling fluid can promote the elastic force that spool overcomes spring downwards, close the spool bore 14 and the through hole 13 that outwards flow, the thrust of drilling fluid is concentrated on the helicoid hydraulic motor, pressure is converted to mechanical rotation energy, drive drill bit and put into; When pulling out of hole, slush pump quits work, and spool upwards, has been opened outside passage under the thrust of spring, make the mud stayed in the drilling tool enter annular space by the through hole on spool bore and the valve body and make in the drilling tool that trips out and do not have drilling mud, avoid spilling on the rig floor.Simple in structure being easy to of the utility model processed, and reduces production costs, and it is convenient to change accessory, remove the circlip groove at male thread end endoporus place, male thread is strengthened, avoid concentrating the housing fracture that causes because of the stress at circlip groove place, the rear installed spool can avoid the accident of spool to drop; Can effectively eliminate the stress of valve body and drilling tool tie point root concentrates at the escape of the binding site setting of the thread of valve body male thread end and valve body; In the shoulder hole of valve body, step up sieve plate with dividing plate and fix with back-up ring, can prevent effectively that the bulk landwaste from entering in the bypass valve, promoted the application life of bypass valve.
The above only is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a helicoid hydraulic motor is with the simple and easy bypass valve of rear installed, comprise valve body, spool, spring and back-up ring, described spool, spring and back-up ring are installed in the inner chamber of valve body, it is characterized in that: be provided with locating shoulder for the retainer spring mounting center at valve body male thread end, described back-up ring is located at valve body and bottom, the big end of spool cooperation place; The through hole of described valve body is provided with shoulder hole outward, from the junction of described shoulder hole and through hole dividing plate, sieve plate, dividing plate and back-up ring is installed successively outside shoulder hole.
2. helicoid hydraulic motor according to claim 1 is with the simple and easy bypass valve of rear installed, and it is characterized in that: the binding site of the thread of male thread end and valve body is provided with escape on the described valve body.
3. helicoid hydraulic motor according to claim 1 and 2 is with the simple and easy bypass valve of rear installed, and it is characterized in that: the small end cooperation place of described valve body and spool is provided with sealing ring.
4. helicoid hydraulic motor according to claim 3 is with the simple and easy bypass valve of rear installed, and it is characterized in that: the big end cooperation place of described valve body and spool is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141747 CN203145872U (en) | 2013-03-26 | 2013-03-26 | Rear-assembled simple bypass valve for screw drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320141747 CN203145872U (en) | 2013-03-26 | 2013-03-26 | Rear-assembled simple bypass valve for screw drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145872U true CN203145872U (en) | 2013-08-21 |
Family
ID=48973408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141747 Expired - Fee Related CN203145872U (en) | 2013-03-26 | 2013-03-26 | Rear-assembled simple bypass valve for screw drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203145872U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438242A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for oil drill pipe |
| CN103437727A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve good in sealing performance |
| CN105735925A (en) * | 2016-04-29 | 2016-07-06 | 天津立林石油机械有限公司 | Semi-closed piston bypass valve for screw rod drilling tool |
| CN105735926A (en) * | 2016-04-29 | 2016-07-06 | 天津立林石油机械有限公司 | Positioning flow guide type bypass valve |
-
2013
- 2013-03-26 CN CN 201320141747 patent/CN203145872U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438242A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve for oil drill pipe |
| CN103437727A (en) * | 2013-08-29 | 2013-12-11 | 成都科盛石油科技有限公司 | Bypass valve good in sealing performance |
| CN105735925A (en) * | 2016-04-29 | 2016-07-06 | 天津立林石油机械有限公司 | Semi-closed piston bypass valve for screw rod drilling tool |
| CN105735926A (en) * | 2016-04-29 | 2016-07-06 | 天津立林石油机械有限公司 | Positioning flow guide type bypass valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20160326 |