CN202380983U - Turbine section for high-speed turbodrill - Google Patents
Turbine section for high-speed turbodrill Download PDFInfo
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- CN202380983U CN202380983U CN2011205547774U CN201120554777U CN202380983U CN 202380983 U CN202380983 U CN 202380983U CN 2011205547774 U CN2011205547774 U CN 2011205547774U CN 201120554777 U CN201120554777 U CN 201120554777U CN 202380983 U CN202380983 U CN 202380983U
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- turbine
- hole
- wheel shaft
- turbine wheel
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Abstract
The utility model relates to the field of oil exploration, in particular to a turbine section for a high-speed turbodrill suitable for a deep well and a directional well. The turbine section comprises a shell, wherein a turbine shaft penetrates through the shell; the upper and lower ends of the turbine shaft are respectively connected with a spline shaft and a spline housing; a turbine component and a rotor bearing are axially arranged in an annular flow channel between the turbine shaft and an inner cavity of the shell; a bearing group is arranged below the turbine shaft; and the turbine section is characterized in that hydraulic balance components are arranged on the upper part of the bearing group below the turbine shaft; the turbine shaft is provided with a central through hole which penetrates through the turbine shaft vertically, and upper radial through holes communicated with the central through hole are formed above the turbine shaft, so that the central through hole is communicated with the upper part of the inner cavity of the shell; and lower radial through holes communicated with the central through hole are formed below the turbine shaft opposite to the hydraulic balance components. The flow channel of the turbine section is improved, the pressure consumption of the turbodrill is reduced, and the overall efficiency of the turbodrill is improved; and meanwhile, thrust stress conditions of the turbine shaft and a ball bearing group are improved, and the service life of the turbodrill is prolonged.
Description
Technical field
The utility model relates to a kind of petroleum exploration field, is particularly suitable for deep-well, the high speed turbodrill turbine section of directional well, belongs to the petroleum machinery equipment technical field.
Background technology
The turbodrill of using in fields such as oil exploration exploitations is to utilize the kinetic energy of drilling fluid to convert mechanical energy to, the broken rock of drive drill bit rotation.Because early stage drilling equipment level is not high, the pressure drop general requirements of turbodrill is less.Along with the development of PDC bit technique, high-speed turbine coupling drill bit becomes possibility.In order to improve the output performance of turbine, be necessary to improve the discharge capacity of turbine, thereby improve the mechanical energy of drilling fluid.And the pump pressure that provides along with borehole pump is increasingly high, and the application of high speed turbodrill, and the big discharge capacity of turbine has caused high pressure drop, and turbine pressure drop height not only causes the load of borehole pump excessive, also can influence the mechanical efficiency of turbodrill.The key that improves the turbodrill overall efficiency is to reduce the pressure loss of drilling fluid in turbodrill, promptly reduces the turbine pressure drop.The turbine pressure drop mainly comprises the pressure loss that drilling fluid process turbine stator and rotor cause and the pressure loss of passing through other parts of runner.The pressure loss of turbine stator and rotor is relevant with the hydraulic performance of blade, and the pressure loss of other parts is then relevant with flow passage structure.The flow passage structure of existing turbine section, because area of passage changes acutely, the build-up of pressure loss is bigger, has reduced the efficient of turbodrill.
Summary of the invention
The utility model technical problem to be solved is to overcome the deficiency that above-mentioned prior art exists and a kind of high speed turbodrill turbine section of different flow passage structures is provided, and it is mild that the drilling fluid area of passage is changed, and reduces to press consumption, improves the overall efficiency of turbodrill.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is:
Include housing; Be coated with turbine wheel shaft in the housing, turbine wheel shaft connects splined shaft and spline housing up and down respectively, is installed on turbine assembly and alignment bearing vertically in the annular channel between turbine wheel shaft and housing inner chamber; Below turbine wheel shaft, install bearing group; It is characterized in that the top of bearing group is installed on the hydraulic resistance balance assembly below turbine wheel shaft, turbine wheel shaft is offered the central through hole of up/down perforation, offer above the turbine wheel shaft be communicated with central through hole on radial direction through hole; Central through hole is connected with housing inner chamber top, below turbine wheel shaft, offers the following radial direction through hole that is conducted with central through hole corresponding to the hydraulic resistance balance assembly.
Press such scheme, described turbine assembly is provided with 70～130 grades vertically, and every grade of turbine assembly is made up of a pair of turbine stator and turbine rotor.
Press such scheme; Described hydraulic resistance balance assembly comprises the stationary seat that the housing inner chamber is provided with; Stationary seat is installed the stationary ring dish through spring, the upper surface of stationary ring dish be sleeved on the rotating ring dish phase configuration on the turbine wheel shaft, the endoporus of stationary ring dish be sleeved on the rotating ring spacer phase configuration on the turbine wheel shaft; Described rotating ring dish lower surface is provided with annular groove, and annular groove is connected with the central through hole of turbine wheel shaft through connecting through hole and following radial direction through hole.
Press such scheme, described hydraulic resistance balance assembly is installed on 1～4 vertically.
Press such scheme, the described radial direction through hole of going up is opened in the bottom of going up 4 grades of turbine assemblies most.
Press such scheme; Junction with turbine wheel shaft above the inner chamber of spline housing is provided with Valve with sliding bush; It is corresponding that Valve with sliding bush is offered the pressure release through hole of offering on the radially valve opening and spline housing, when slide valve buckle is in open position, through slide valve buckle the central through hole of turbine wheel shaft and the below of annular channel is conducted.
The beneficial effect of the utility model is: 1, under the operating mode of high rotating speed, heavy load; Through the change of hydraulic resistance balance assembly and turbine section runner is set below turbine wheel shaft; Make the sub-fraction drill-in fluid that accounts for total flow about 5% arrive the turbine section below through the turbine wheel shaft central through hole through the hydraulic resistance balance assembly, improved the turbine section runner thus, it is mild that the drilling fluid area of passage is changed; Reduce the pressure consumption of turbodrill, improve the overall efficiency of turbodrill; 2,, make to act on corresponding the reducing of end thrust of turbine wheel shaft also corresponding the diminishing of end thrust on the ball bearing group, thereby improve the thrust force-bearing situation of turbine wheel shaft and ball bearing group, the application life of having improved turbodrill because the reduction of front and back pressure reduction.When 3, turbine section quit work, the Valve with sliding bush in the valve formula spline housing was in open position, and drilling fluid flows out from the pressure release through hole, can work to wash away, clean the turbine wheel shaft inner chamber.
Description of drawings
Fig. 1 is the positive sectional structure chart of the first half of an embodiment of the utility model.
Fig. 2 is the positive sectional structure chart of the latter half of an embodiment of the utility model.
Fig. 3 is the positive sectional structure chart of hydraulic resistance balance assembly among embodiment of the utility model.
Fig. 4 is the A-A sectional drawing among Fig. 3.
Fig. 5 is the axial view of stationary seat in the hydraulic resistance balance assembly among embodiment of the utility model.
The axial view of an embodiment bottom bracket end face in Fig. 6 the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done to specify further.
Include the housing 13 of tubulose; The two ends of housing are provided with top connection 1 with inside tapered thread and the lower contact 24 with outer cone thread respectively, are coated with turbine wheel shaft 12 in the housing, the upper and lower side of turbine wheel shaft be threaded respectively splined shaft 2 and spline housing 21; Be installed on turbine assembly and alignment bearing 9 in the annular channel between turbine wheel shaft and housing inner chamber vertically; Described turbine assembly is installed on 90 grades vertically, and the turbine assembly of going up most is provided with 4 grades, goes up 4 grades of turbine assemblies most and works to filter mud impurity and prevent the radial direction through hole obstruction; Alignment bearing is installed 2-4 vertically and is paid, and the equispaced distributes on turbine wheel shaft; Every grade of turbine assembly is made up of with turbine rotor 7 a pair of turbine stator 8; Turbine stator is a whole set of 4 through raising, shunting spacer 6 and gap adjustment cover 11 are fixed on the housing inner chamber, and turbine rotor and alignment bearing are adjusted spacer ring 10 through last adjustment circle 3, shunting axle sleeve 5 and gap and be fixed on the turbine wheel shaft.Below turbine wheel shaft, install ball bearing group 17 through bearing support 18, axially being fixed on the turbine wheel shaft of ball bearing group through rotating ring spacer 29 and downward modulation a whole set of 19, bearing support up and down through stationary seat 25, water conservancy diversion cover 15 and a whole set of 20 location of downward modulation down; The ball bearing group also can change diamond sliding thrust bearing group into, can reduce turbine section length like this, improves the application life of turbine section.Be installed on hydraulic resistance balance assembly 14 on the top of ball bearing group, described hydraulic resistance balance assembly comprises the stationary seat 25 that the housing inner chamber is installed, and the stationary seat endoporus is installed stationary ring dish 27 through disk spring 28; The circumferential locating slot that stationary ring dish periphery is offered circumferentially locatees the stationary ring dish with the dog screw of radially installing 30 phase configuration, the upper surface of stationary ring dish be sleeved on the rotating ring dish 26 lower surface phase configuration on the turbine wheel shaft; The endoporus of stationary ring dish be sleeved on rotating ring spacer 29 phase configuration on the turbine wheel shaft; The rotating ring dish compresses through the rotating ring spacer, and described rotating ring dish lower surface is provided with annular groove, and annular groove is connected with the central through hole of turbine wheel shaft through connecting through hole and following radial direction through hole; Described turbine wheel shaft is offered the central through hole of up/down perforation; Offer above the turbine wheel shaft be communicated with central through hole on radial direction through hole 16, the described radial direction through hole of going up is opened in the bottom of going up 4 grades of turbine assemblies most, last radial direction through hole is 2～4; Along circumferentially being uniformly distributed with; The shunting axle sleeve 5 corresponding radial direction through hole of going up that are sleeved on the turbine wheel shaft are offered a ring through hole, and central through hole is connected with housing inner chamber top, below turbine wheel shaft, offer the following radial direction through hole 36 that is conducted with central through hole corresponding to the hydraulic resistance balance assembly; Described hydraulic resistance balance assembly is installed on 3 vertically, and the corresponding circle of each hydraulic resistance balance assembly is radial direction through hole down; On the brace rod of stationary seat 25 peripheral annular grooves 32 both ends of the surface, offer circular hole, insert pin 31 in the circular hole, make the cannelure and brace rod 33 centerings of three stationary seats that link to each other up and down, to keep the unimpeded of annular channel.Stationary seat bottom end bearing holder structure and stationary seat are close; The both ends of the surface of peripheral annular groove 35 are provided with back-up block 34; Offer circular hole on the back-up block of upper surface and insert pin 31, with being connected and centering of the lower surface of stationary seat, retainer shaft bearing annular channel unimpeded.Junction with turbine wheel shaft above the inner chamber of spline housing 21 is provided with Valve with sliding bush; Described Valve with sliding bush comprises the valve opening that the spline housing inner chamber is offered; Configuration sliding sleeve spool 22 in the valve opening; Configuration return spring 23 in sliding sleeve spool bottom is through the thread connection of spline housing and turbine wheel shaft, with sliding sleeve spool and return spring pretension; It is corresponding that the sliding sleeve spool is offered the pressure release through hole of offering on the radially valve opening 37 and spline housing 38, when slide valve buckle is in open position, through Valve with sliding bush the central through hole of turbine wheel shaft and the below of annular channel is conducted.When turbine section quit work, Valve with sliding bush was in open position, and drilling fluid flows out from the pressure release through hole, works to wash away, cleans the turbine wheel shaft inner chamber; During turbine section work, the return spring pressurized, the pressure release through hole on the spline housing is closed.
When the turbine section of the utility model was worked, drilling fluid was through after going up most 4 grades of turbine assemblies, and through the hole on shunting axle sleeve 5 and the turbine wheel shaft, a part gets into the turbine wheel shaft central through hole, in the situation that slide valve buckle is closed, and the formation higher-pressure region; And another part through under organize the multistage turbine assembly after pressure drop reduce to form low-pressure area.Drilling fluid is through the hydraulic resistance balance assembly; To the low-pressure area earial drainage, improved the pressure of low-pressure area on the one hand, pressure drop before and after having reduced by the higher-pressure region; Produce and the reverse thrust of turbine wheel shaft axial hydraulic thrust on the other hand, can reduce the axial load that the thrust of ball bearing group is born.During turbine section work, the drilling fluid of central through hole only accounts for about 5% of total flow in the turbine wheel shaft of flowing through, and drilling fluid mainly flows the annular channel between turbine wheel shaft and housing.The area of passage of turbine is A
1, the cannelure area of stationary seat is A in the hydraulic resistance balance assembly
2, the cannelure area of bearing support is A
3Make A
1=A
2=A
3, or area of passage is close, and then the variation of the area of passage of drilling fluid is comparatively mild, and the pressure loss reduces, and can correspondingly reduce the turbine pressure drop.
Claims (10)
1. high speed turbodrill turbine section; Include housing; Be coated with turbine wheel shaft in the housing, turbine wheel shaft connects splined shaft and spline housing up and down respectively, is installed on turbine assembly and alignment bearing vertically in the annular channel between turbine wheel shaft and housing inner chamber; Below turbine wheel shaft, install bearing group; It is characterized in that the top of bearing group is installed on the hydraulic resistance balance assembly below turbine wheel shaft, turbine wheel shaft is offered the central through hole of up/down perforation, offer above the turbine wheel shaft be communicated with central through hole on radial direction through hole; Central through hole is connected with housing inner chamber top, below turbine wheel shaft, offers the following radial direction through hole that is conducted with central through hole corresponding to the hydraulic resistance balance assembly.
2. high speed turbodrill turbine section according to claim 1 is characterized in that described turbine assembly is provided with 70～130 grades vertically, and every grade of turbine assembly is made up of a pair of turbine stator and turbine rotor.
3. high speed turbodrill turbine section according to claim 1 and 2; It is characterized in that described hydraulic resistance balance assembly comprises the stationary seat that the housing inner chamber is provided with; Stationary seat is installed the stationary ring dish through spring, the upper surface of stationary ring dish be sleeved on the rotating ring dish phase configuration on the turbine wheel shaft, the endoporus of stationary ring dish be sleeved on the rotating ring spacer phase configuration on the turbine wheel shaft; Described rotating ring dish lower surface is provided with annular groove, and annular groove is connected with the central through hole of turbine wheel shaft through connecting through hole and following radial direction through hole.
4. high speed turbodrill turbine section according to claim 3 is characterized in that described hydraulic resistance balance assembly installs 1～4 vertically.
5. high speed turbodrill turbine section according to claim 1 and 2 is characterized in that the described radial direction through hole of going up is opened in the bottom of going up 4 grades of turbine assemblies most.
6. high speed turbodrill turbine section according to claim 4 is characterized in that the corresponding circle of each hydraulic resistance balance assembly radial direction through hole down; On the overlap joint muscle of stationary seat peripheral annular groove both ends of the surface, offer circular hole, insert pin in the circular hole, make the cannelure and overlap joint muscle centering of the stationary seat that links to each other up and down.
7. high speed turbodrill turbine section according to claim 1 and 2; It is characterized in that above the inner chamber of spline housing Valve with sliding bush being set with the junction of turbine wheel shaft; It is corresponding that Valve with sliding bush is offered the pressure release through hole of offering on the radially valve opening and spline housing, when slide valve buckle is in open position, through slide valve buckle the central through hole of turbine wheel shaft and the below of annular channel is conducted.
8. high speed turbodrill turbine section according to claim 7; It is characterized in that described Valve with sliding bush comprises the valve opening that the spline housing inner chamber is offered; Configuration sliding sleeve spool in the valve opening, configuration return spring in sliding sleeve spool bottom is through the thread connection of spline housing and turbine wheel shaft; With sliding sleeve spool and return spring pretension, it is corresponding that the sliding sleeve spool is offered the pressure release through hole of offering on the radially valve opening and spline housing.
9. high speed turbodrill turbine section according to claim 1 and 2 is characterized in that described bearing group is ball bearing group or diamond sliding thrust bearing group.
10. high speed turbodrill turbine section according to claim 3 is characterized in that described spring is a disk spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205547774U CN202380983U (en) | 2011-12-26 | 2011-12-26 | Turbine section for high-speed turbodrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205547774U CN202380983U (en) | 2011-12-26 | 2011-12-26 | Turbine section for high-speed turbodrill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380983U true CN202380983U (en) | 2012-08-15 |
Family
ID=46629496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205547774U Withdrawn - After Issue CN202380983U (en) | 2011-12-26 | 2011-12-26 | Turbine section for high-speed turbodrill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202380983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434110A (en) * | 2011-12-26 | 2012-05-02 | 江汉石油钻头股份有限公司 | High-speed turbine section for turbine drilling tool |
| CN106050129A (en) * | 2016-06-06 | 2016-10-26 | 西南石油大学 | Drilling tool for achieving rotating impact through turbine |
-
2011
- 2011-12-26 CN CN2011205547774U patent/CN202380983U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434110A (en) * | 2011-12-26 | 2012-05-02 | 江汉石油钻头股份有限公司 | High-speed turbine section for turbine drilling tool |
| CN106050129A (en) * | 2016-06-06 | 2016-10-26 | 西南石油大学 | Drilling tool for achieving rotating impact through turbine |
| CN106050129B (en) * | 2016-06-06 | 2018-06-01 | 西南石油大学 | A kind of drilling tool that rotary impact is realized using turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20140423 |
|
| RGAV | Abandon patent right to avoid regrant |