CN201443300U - Overflowing and anti-falling integrated screwdrill - Google Patents
Overflowing and anti-falling integrated screwdrill Download PDFInfo
- Publication number
- CN201443300U CN201443300U CN2009200290615U CN200920029061U CN201443300U CN 201443300 U CN201443300 U CN 201443300U CN 2009200290615 U CN2009200290615 U CN 2009200290615U CN 200920029061 U CN200920029061 U CN 200920029061U CN 201443300 U CN201443300 U CN 201443300U
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- lost
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- valve body
- overflow
- falling
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Abstract
The utility model discloses an overflowing and anti-falling integrated screwdrill, pertaining to petroleum exploration machinery. The screwdrill comprises an overflow valve assembly and a motor assembly, wherein the overflow valve assembly comprises a valve body and a valve core which comprises a fixed valve seat and a piston with an overflow hole, and the motor assembly comprises a shell, a stator and a rotor which is fixedly connected with the bottom end of an anti-falling shaft; and the upper end of the anti-falling shaft is provided with an anti-falling head. The screwdrill is characterized in that the bottom of the valve body of the overflow valve is directly connected with the top part of the shell of the motor assembly; and the upper part of the anti-falling shaft is located in the valve body of the overflow valve and the inner bottom of the valve body is provided with an anti-falling retaining device matched with the anti-falling head. Compared with the prior art, the screwdrill is not provided with an anti-falling shell, thus avoiding the occurrence of well-falling accidents caused by the fracture of a snap fastener at the connecting position between the valve body of the overflow valve and the anti-falling shell or the fracture of the shell, and greatly improving the safety of well drilling. In addition, the device is simple in structure and convenient for production and installation.
Description
Technical field
The utility model belongs to a kind of oil exploitation machinery, specifically is a kind of helicoid hydraulic motor.
Background technology
The helicoid hydraulic motor that oil exploitation is at present used as shown in Figure 1, comprises overflow valve assembly 1, anti-lost housing 2, anti-lost axle 4, motor assembly 5; The two ends of wherein anti-lost housing 2 are connected with the valve body 101 of overflow valve, the housing 501 of motor assembly respectively.When box fracture or the housing fracture of anti-lost housing 2 with housing 501 junctions of motor assembly, anti-lost axle 4 is descending, and anti-lost nut 3 is stuck on the step in the anti-lost housing 2, thereby realizes anti-lost function, avoids the well accident.If but the box fracture or the housing fracture of anti-lost housing 2 and valve body 101 junctions of overflow valve assembly, anti-lost axle 4 will be sentenced the part one down well that rises and falls in company with fracture, and anti-lost function is inefficacy just.So have potential safety hazard in this kind helicoid hydraulic motor drilling process, safety is not high.
The utility model content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of overflow, anti-lost integral type helicoid hydraulic motor, and its anti-lost reliable in function is safe.
In order to address the above problem, the utility model by the following technical solutions: this overflow, anti-lost integral type helicoid hydraulic motor comprise overflow valve assembly, motor assembly; The overflow valve assembly comprises valve body, spool, and spool comprises fixing valve seat and has the piston of spout hole; Motor assembly comprises housing, stator, rotor, and described rotor and anti-lost axle bottom are affixed, and the upper end of anti-lost axle is provided with anti-lost major part; The valve body bottom of described overflow valve directly links to each other with the case top of motor assembly; The top of described anti-lost axle is positioned at the valve body of overflow valve, and the inner bottom part of valve body is provided with the anti-lost retention device that cooperates with described anti-lost major part.
As further technical scheme of the present utility model:
In this overflow, anti-lost integral type helicoid hydraulic motor, described anti-lost retention device comprises anti-lost packing ring, anti-lost block; Anti-lost axle passes anti-lost packing ring, and the internal diameter of anti-lost packing ring is less than the diameter of described anti-lost major part; Described anti-lost block is positioned at the below of anti-lost packing ring, and anti-lost block comprises a plurality of little blocks, and each little block is on the uniform inwall that is installed on valve body of the axis of anti-lost axle.
Further: the below of described anti-lost block is provided with and prevents that anti-lost block from moving radially the back-up ring that comes off, and the below of back-up ring is provided with spacing jump ring, and spacing jump ring is installed on the valve interior wall.
The coaxial liner sleeve that is provided with in below of the inherent valve seat of the valve body of described overflow valve, the bottom surface of valve seat is withstood in the upper surface of this liner sleeve; Liner sleeve lower surface is spacing by the wire circlip that is arranged on the valve interior wall.
The beneficial effects of the utility model are:
1, it has adopted overflow and anti-lost integral structure, directly the valve body with overflow valve links to each other with the housing of motor assembly, in the airly fall housing, thereby stopped to cause falling the generation of well accident, improved the safety of drilling well greatly because of fracture of junction box or housing between overflow valve valve body and the anti-lost housing rupture.
If fracture of 2 overflow valve valve bodies of the present utility model and motor assembly junction box or housing fracture, anti-lost axle is descending, and its anti-lost major part is stuck on the anti-lost packing ring, blocks slurry channel, and pump pressure rises, thereby abovegroundly can in time find the down-hole abnormal conditions.
3, simple in structure, be convenient to produce and install.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further:
Fig. 1 is the prior art constructions schematic diagram;
Fig. 2 is the structural representation of the utility model embodiment;
Fig. 3 be among the utility model embodiment anti-lost block overlook the structure for amplifying schematic diagram,
Among the figure: 1 overflow valve assembly, 101 valve bodies, 102 valve seats, 103 pistons, 2 anti-lost housings, 3 anti-lost nuts, 4 anti-lost axles, 41 anti-lost major parts, 5 motor assemblies, 501 housings, 502 rotors, 503 stators, 6 liner sleeves, 7 wire circlips, 8 anti-lost packing rings, 9 anti-lost blocks, 91 little blocks, 10 back-up rings, 11 jump rings.
The specific embodiment
As shown in Figure 2, this helicoid hydraulic motor mainly comprises overflow valve assembly 1, motor assembly 5, anti-lost axle 4.Its overflow valve assembly comprises valve body 101, spool, and spool comprises fixing valve seat 102 and has the piston 103 of spout hole.Motor assembly comprises housing 501, stator 503, rotor 502, and its rotor 502 is affixed with the bottom of anti-lost axle 4, and the upper end of anti-lost axle 4 is provided with anti-lost major part 41.
This anti-lost retention device comprises anti-lost packing ring 8, anti-lost block 9.Anti-lost axle 4 passes anti-lost packing ring 8, and the internal diameter of anti-lost packing ring 8 is less than the diameter of anti-lost major part 41.Anti-lost block 9 is positioned at the below of anti-lost packing ring 8.Produce and install for convenient, anti-lost block 9 is made as by a plurality of little blocks 91 to be formed, general preferred 3 of the number of little block 91, as shown in Figure 3, also can be provided with more a plurality ofly, each little block 91 is on the uniform inwall that is installed on valve body 101 of the axis of anti-lost axle, stressed even, anti-lost more reliable.In addition, little block can further be made as circular arc, and as shown in Figure 3, production is installed more convenient, and result of use is better.
As shown in Figure 2, the below of anti-lost block 9 is provided with anti-stop block and moves radially the back-up ring 10 that comes off, and the below of back-up ring 10 is provided with spacing jump ring 11, and spacing jump ring 11 is installed on the inwall of valve body 101.
The coaxial liner sleeve 6 that is provided with in below of the inherent valve seat of the valve body of overflow valve, the bottom surface of valve seat 102 is withstood in the upper surface of this liner sleeve 6, and liner sleeve 6 lower surfaces are spacing by the wire circlip 7 that is arranged on valve body 101 inwalls.Like this, wire circlip 7 is realized spacing by 6 pairs of valve seats of liner sleeve 102, and it is also convenient to install, and is convenient to before formally coming into operation unlatching, the closed action to overflow valve in addition and tests.
This helicoid hydraulic motor in use, if the junction fracture takes place or housing 501 ruptures between valve body 102 and the housing 501, anti-lost 4 descending being stuck on the anti-lost packing ring 8 are played anti-lost effect.The case weight of fracture all is pressed on the anti-lost packing ring 8, and anti-lost block 9 prevents that by the shearing of bearing anti-lost packing ring 8 anti-lost packing ring is descending.Back-up ring 10 is spacing by jump ring 11, and each the little block 91 that is used to prevent anti-lost block 9 moves radially and comes off, and improves security reliability.
The utility model is not limited only to the foregoing description.
Claims (4)
1. overflow, anti-lost integral type helicoid hydraulic motor comprise overflow valve assembly, motor assembly; The overflow valve assembly comprises valve body, spool, and spool comprises fixing valve seat and has the piston of spout hole; Motor assembly comprises housing, stator, rotor, and described rotor and anti-lost axle bottom are affixed, and the upper end of anti-lost axle is provided with anti-lost major part; It is characterized in that: the valve body bottom of described overflow valve directly links to each other with the case top of motor assembly; The top of described anti-lost axle is positioned at the valve body of overflow valve, and the inner bottom part of valve body is provided with the anti-lost retention device that cooperates with described anti-lost major part.
2. overflow according to claim 1, anti-lost integral type helicoid hydraulic motor is characterized in that: described anti-lost retention device comprises anti-lost packing ring, anti-lost block; Anti-lost axle passes anti-lost packing ring, and the internal diameter of anti-lost packing ring is less than the diameter of described anti-lost major part; Described anti-lost block is positioned at the below of anti-lost packing ring, and anti-lost block comprises a plurality of little blocks, and each little block is on the uniform inwall that is installed on valve body of the axis of anti-lost axle.
3. overflow according to claim 2, anti-lost integral type helicoid hydraulic motor is characterized in that: the below of described anti-lost block is provided with and prevents that anti-lost block from moving radially the back-up ring that comes off, and the below of back-up ring is provided with spacing jump ring, and spacing jump ring is installed on the valve interior wall.
4. according to claim 1 or 2 or 3 described overflows, anti-lost integral type helicoid hydraulic motor, it is characterized in that: the coaxial liner sleeve that is provided with in below of the inherent valve seat of the valve body of described overflow valve, the bottom surface of valve seat is withstood in the upper surface of this liner sleeve; Liner sleeve lower surface is spacing by the wire circlip that is arranged on the valve interior wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200290615U CN201443300U (en) | 2009-07-09 | 2009-07-09 | Overflowing and anti-falling integrated screwdrill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200290615U CN201443300U (en) | 2009-07-09 | 2009-07-09 | Overflowing and anti-falling integrated screwdrill |
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| Publication Number | Publication Date |
|---|---|
| CN201443300U true CN201443300U (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200290615U Expired - Fee Related CN201443300U (en) | 2009-07-09 | 2009-07-09 | Overflowing and anti-falling integrated screwdrill |
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- 2009-07-09 CN CN2009200290615U patent/CN201443300U/en not_active Expired - Fee Related
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