CN2226138Y - Hollow rotor screw stem drilling tool with flow stabilizing valve - Google Patents
Hollow rotor screw stem drilling tool with flow stabilizing valve Download PDFInfo
- Publication number
- CN2226138Y CN2226138Y CN 95219393 CN95219393U CN2226138Y CN 2226138 Y CN2226138 Y CN 2226138Y CN 95219393 CN95219393 CN 95219393 CN 95219393 U CN95219393 U CN 95219393U CN 2226138 Y CN2226138 Y CN 2226138Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flow stabilizing
- hollow rotor
- spring
- stabilizing valve
- 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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- Hydraulic Motors (AREA)
Abstract
The utility model relates to a hollow rotor screw rod drilling tool with a flow stabilizing valve used for developing drilling wells of geology and petroleum exploration. The hollow rotor screw rod drilling tool with a flow stabilizing valve used for developing drilling wells of geology and petroleum exploration is composed of a motor which is composed of a stator and a hollow rotor, a by-pass valve, a cardan shaft, and a transmission shaft. A flow stabilizing valve is also arranged on the upper end of the hollow rotor. The flow stabilizing valve is composed of six parts of a valve seat, a valve sleeve, a spring, a blocking ring, a valve core, and a supply sleeve. The valve sleeve is arranged in the valve seat, and the valve sleeve can move from top to bottom. The spring is sheathed outside the valve sleeve. A spring seat is arranged on the blocking ring. The blocking ring is supported by a lining arranged on the lower side of the interior of the valve seat. A lining seat is arranged on the bottom disk of the valve core. The valve core and the valve seat are arranged together by small interference fit. The structure solves the problem that a high drilling pressure motor severely loses speed. The utility model has very important meaning.
Description
The utility model relates to a kind of drilling tool that is used for geology and oil exploration, oil development drilling well, especially has significantly good hard mechanical property, can regulate the hollow rotor helicoid hydraulic motor with flow stabilizing valve of stabilized (steady-state) speed automatically under high the pressure of the drill.
In drilling well is produced, adopt common hollow screw drilling tool at present, exist the soft feature of tangible mechanical separator speed, motor rotary speed is subjected to load effect very big, tracing it to its cause is because borehole pump is carried certain total discharge capacity, forms two parts in motor, i.e. main flow and shunt volume.Main flow is through the cavity flow mistake between rotor and the stator, remainder promptly is that shunt volume then flows away from rotor hollow, its advantage is the big discharge capacity that obtains, landwaste is taken away easily, its shortcoming is the variable effect shunt volume of load, thereby influence main flow (decision motor rotary speed), especially increase at heavy load (under the pressure of the drill) resistance, rotor speed reduces a lot, and its result reduces rate of penetration and drilling efficiency on the one hand greatly, increases drilling cost, on the other hand, more fluid flows away from rotor hollow, and a large amount of water-horse power loss heats that produce elevate the temperature, and directly influence drill tool life.
The purpose of this utility model is to improve the soft mechanism characteristics of hollow screw drilling tool, makes the unlikely pronounced stall of motor of hollow screw drilling tool under high the pressure of the drill, keeps stable, in order to overcome above-mentioned shortcoming.
The purpose of this utility model is to realize by following technical scheme,
The utility model design has a kind of hollow rotor helicoid hydraulic motor with flow stabilizing valve, it is the motor that constitutes by stator and hollow rotor, and bypass valve, universal drive shaft, power transmission shaft is formed, it is characterized in that flow stabilizing valve (2) also being housed in the upper end of hollow rotor, flow stabilizing valve (2) is by valve seat (13), valve pocket (15), spring (12), back-up ring (16), spool (11), lining (17) six parts constitute, valve pocket (15) is contained in the valve seat (13), can move up and down, its overcoat is placed with spring (12), spring (12) is sat and is placed on the ring washer (16), back-up ring (16) is supported by the lining (17) that is contained in the inner below of valve seat (13), lining (17) is sat and to be placed on the chassis of spool (11), and spool (11) cooperates by slight interference with valve seat (13) and is fitted together.Its operating principle is as follows: in actual well drilled, when drill bit pressurizes (the pressure of the drill) when creeping into, bottom rock has a moment of resistance to drill bit, making motor rotor reduce main flow in spot speed reduces, again because the total discharge capacity of borehole pump is a constant, so shunt volume just increases the pressure that imposes on valve pocket (15) and also increases, when this hydraulic coupling surpasses the pretightning force of spring (12), will promote valve pocket (15) and move down, dwindle it and the formed valve port of spool (11), valve port is opened and is reduced, cause that shunt volume reduces, main flow increases, and rotating speed plays rise again, and it is stable that its rotating speed keeps.Equally, the suffered moment of resistance of motor reduces, spinner velocity increases, main flow increases, shunt volume reduces, and it is also little to act on valve pocket (15) upward pressure, and spring (12) just promotes valve pocket (15) and moves up, valve port increases, shunt volume increases, and main flow reduces, and rotor speed falls after rise, keep its stable speed again, like this, load variations during work makes valve pocket (15) shift to another equilbrium position by an equilbrium position, but the hollow shunt volume no longer increases and increases greatly with load, that is to say that the output speed of motor is stablized.
The above-mentioned hollow rotor helicoid hydraulic motor that shows with flow stabilizing valve, not only solved the problem of high the pressure of the drill (load) motor pronounced stall well, and water-horse power utilization rate and drilling tool efficient have been improved, this is for improving rate of penetration, shorten drilling period, reduce drilling cost and have crucial meaning.
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 has the hollow rotor helicoid hydraulic motor structural representation of flow stabilizing valve;
Fig. 2 flow stabilizing valve structure chart;
Fig. 3 flow stabilizing valve is contained in epitrochanterian structural representation;
The outer bead cross-sectional view of Fig. 4 valve pocket (15);
The vertical view of Fig. 5 spool (11);
The vertical view of Fig. 6 back-up ring (16);
Fig. 7 baffle plate (9) longitudinal plan.
Among the figure:
1, bypass valve 2, flow stabilizing valve 3, motor assembly 4, stator
5, hollow rotor 6, universal drive shaft assembly 7, driving-shaft assembly
8, jump ring 9, baffle plate 10, rotor 11, spool
12, spring 13, valve seat 14, screw 15, valve pocket
16 back-up rings 17, lining
In Fig. 1, bypass valve (1) connects the motor (3) of drilling tool, and motor (3) is made of stator (4) and hollow rotor (5), and universal drive shaft that is linked in sequence below (6) and power transmission shaft (7) are equipped with flow stabilizing valve (2) in the upper end of hollow rotor (5).
Fig. 2 is the structure chart of flow stabilizing valve (2), it is by valve seat (13), valve pocket (15), spring (12), back-up ring (16), spool (11), lining (17) six parts constitute, valve pocket (5) is to be contained in the valve seat (13), can move up and down, its overcoat is placed with spring (12), spring (12) is sat and is placed on the back-up ring (16), back-up ring (16) is supported by the lining (17) that is contained in the inner below of valve seat (13), lining (17) is sat and is placed on the chassis of spool (11), spool (11) cooperates by slight interference with valve seat (13) and is fitted together, both guaranteed the globality of flow stabilizing valve, be easy to dismounting again and guarantee spool (11) and valve pocket (15) to neutrality, flow stabilizing valve valve seat (13) upper end has two screws, so that from the helicoid hydraulic motor rotor, take out, its loam cake one baffle plate (9) (accompanying drawing 7) during use, in case mud washing away to screw, baffle plate (9) and valve body are installed on rotor (10) entrance (shown in the accompanying drawing 3) with jump ring (8), slurry fluid can directly not wash away spring (12) like this, the functional reliability and the application life of spring (12) have been increased, valve pocket (13), spool (11), lining (17) all is coated with the hard anti-erosion material with the contact surface that slurry fluid washes away, as making pottery, porcelain, chromium etc.And can change after damaging, still can not use and damage parts, will valve whole not discarded, select for use constant-rate spring can limit the maximum inflow-rate of water turbine (being the maximum critical discharge capacity of hollow screw drilling tool) of hollow, select for use suitable tandem compound spring (different-stiffness) can obtain discharge stability preferably, select for use suitable traitorous square (change rigidity) spring can obtain better stability, and can compensate the motor leakage as required, thereby more realizing that motor rotary speed is constant substantially, steady running in the heavy load excursion.The utility model be designed to also that spring (12) is pressed and the time, valve pocket (13) can reach and move down the limit, simplifies the position-limit mechanism that valve pocket moves down end.
Claims (5)
1, a kind of hollow rotor helicoid hydraulic motor with flow stabilizing valve, by the motor that stator and hollow rotor constituted, and bypass valve, universal drive shaft, power transmission shaft form, and it is characterized in that in the upper end of hollow rotor flow stabilizing valve being housed also.
2, a kind of hollow rotor helicoid hydraulic motor according to claim 1 with flow stabilizing valve, it is characterized in that flow stabilizing valve is to be made of valve seat, valve pocket, spring, back-up ring, spool, lining six parts, valve pocket is contained in the valve seat, can move up and down, its overcoat is placed with spring, and spring is sat and is placed on the ring washer, and back-up ring is supported by the lining that is contained in below, valve seat inside, lining is sat and to be placed on the chassis of spool, and spool cooperates by slight interference with valve seat and is fitted together.
3, according to claim 1,2 described a kind of hollow rotor helicoid hydraulic motors with flow stabilizing valve, it is characterized in that flow stabilizing valve valve seat upper end has two screws, its loam cake one baffle plate, baffle plate and valve body are installed on the rotor entrance with jump ring.
4, according to claim 1,2 described a kind of hollow rotor helicoid hydraulic motors, it is characterized in that selected spring can be a constant-rate spring, the tandem compound spring of different-stiffness, the traitorous square spring of change rigidity with flow stabilizing valve.
5, according to claim 1,2 described a kind of hollow rotor helicoid hydraulic motors, it is characterized in that the contact surface that valve pocket, spool, lining and slurry fluid wash away all is coated with the hard anti-erosion material with flow stabilizing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219393 CN2226138Y (en) | 1995-08-24 | 1995-08-24 | Hollow rotor screw stem drilling tool with flow stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219393 CN2226138Y (en) | 1995-08-24 | 1995-08-24 | Hollow rotor screw stem drilling tool with flow stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2226138Y true CN2226138Y (en) | 1996-05-01 |
Family
ID=33867614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95219393 Expired - Fee Related CN2226138Y (en) | 1995-08-24 | 1995-08-24 | Hollow rotor screw stem drilling tool with flow stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2226138Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007269B (en) * | 2008-04-18 | 2014-11-12 | 德莱科能量服务有限公司 | Method and apparatus for controlling downhole rotational rate of a drilling tool |
| CN109946052A (en) * | 2019-02-27 | 2019-06-28 | 中国地质大学（北京） | Power drilling tool hydraulic part working performance test device |
-
1995
- 1995-08-24 CN CN 95219393 patent/CN2226138Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102007269B (en) * | 2008-04-18 | 2014-11-12 | 德莱科能量服务有限公司 | Method and apparatus for controlling downhole rotational rate of a drilling tool |
| CN109946052A (en) * | 2019-02-27 | 2019-06-28 | 中国地质大学（北京） | Power drilling tool hydraulic part working performance test device |
| CN109946052B (en) * | 2019-02-27 | 2023-12-15 | 中国地质大学（北京） | Device for testing working performance of hydraulic component of power drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |