CN202755936U - Waterpower cutting knife assembly with mechanical cutting knife correction structure - Google Patents
Waterpower cutting knife assembly with mechanical cutting knife correction structure Download PDFInfo
- Publication number
- CN202755936U CN202755936U CN 201220444074 CN201220444074U CN202755936U CN 202755936 U CN202755936 U CN 202755936U CN 201220444074 CN201220444074 CN 201220444074 CN 201220444074 U CN201220444074 U CN 201220444074U CN 202755936 U CN202755936 U CN 202755936U
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- cutting knife
- waterpower
- cutter body
- mechanical
- hydraulic
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Abstract
The utility model discloses a waterpower cutting knife assembly with a mechanical cutting knife correction structure. The waterpower cutting knife assembly is characterized in that one end of a waterpower cutting knife body in the waterpower cutting knife assembly is in butt joint with a central shaft positioned in a mechanical cutting knife assembly through double male matched joints. The mechanical cutting knife assembly is composed of a mechanical cutting knife body, a friction block, a pressure spring, the central shaft, a sliding tooth sleeve and slips. Due to the structural style, centering of a waterpower cutting knife is achieved by adopting an anchoring centering function of the mechanical cutting knife so as to protect an outer layer sleeve pipe, and the aim of cutting an oil sleeve pipe is achieved by waterpower cutting knife cutting. The mechanical cutting knife and the waterpower cutting knife are connected through the double male matched joints, cutting efficiency is improved, and the risk of cutting the outer layer sleeve pipe is lowered.
Description
Technical field
The utility model relates to a kind of waterpower cutter assembly, specifically a kind of waterpower cutter assembly with righting structure.
Background technologyIn field of petroleum exploitation, for the more reasonable petroleum resources that more fully utilizes, often relate to the tubing and casing cutting technique.Cutting tool commonly used has hydraulic cutter and mechanical cutter at present: the hydraulic cutter cutting efficiency is higher, but because hydraulic cutter can't be fully placed in the middle, has the risk of incised wound outer layer sleeve; The machinery cutter can be realized by throw placed in the middle, but mechanical cutter complicated operation in cutting operation, and cutting efficiency is on the low side.
Now widely used tubing and casing cutting technique generally adopts the cutting of hydraulic cutter+centralizer, but owing to there is a fixed gap between centralizer and the tubing and casing, hydraulic cutter can't be fully placed in the middle, when particularly cutting the large Oil/gas Well of well depth hole deviation, the welt phenomenon of hydraulic cutter is more serious, has the risk of incised wound outer layer sleeve.
The utility model content
In order to overcome above-mentioned deficiency, the utility model purpose is to provide a kind of hydraulic cutter that can make fully placed in the middle to realize the waterpower cutter assembly of the accurate band machinery cutter righting structure that cuts in tubing and casing.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Waterpower cutter assembly with mechanical cutter righting structure, comprise the waterpower cutter assembly, one end of the hydraulic cutter body in the described waterpower cutter assembly docks with central axis in the mechanical cutter assembly by two public joints that cooperate, described mechanical cutter assembly is by mechanical cutter body, brake pad, top pressure spring, central axis, sliding facing and slips form, described central axis passes from mechanical cutter body and brake pad successively, brake pad is connected with central axle threads by sliding facing, the surface of described mechanical cutter body is provided with the inclined-plane dovetail groove, slips is located at the surface of inclined-plane dovetail groove, and can be along this surface sliding, when central axis rotates, brake pad promotes slips and moves, make slips along dovetail groove surface, inclined-plane extending radially out to the inwall that holds out against tubing and casing to mechanical cutter body gradually, at this moment, the top pressure spring that is located between brake pad and the central axis is compressed.
Described waterpower cutter assembly is by the hydraulic cutter body, main flow channel, nozzle, piston, back-moving spring, piston rod and three blades form, described hydraulic cutter body is hollow tubular structure, the position of close upper end is provided with main flow channel in being provided with in the hydraulic cutter body, nozzle is located at the water outlet of main flow channel, in the hydraulic cutter body and be positioned at nozzle below be provided with piston, back-moving spring, piston rod, three blades are circumferentially spaced apart along the surface of hydraulic cutter body, and be hinged on the hydraulic cutter body, highly pressurised liquid produces pressure differential by the nozzle in the piston, the pushing piston compression reseting spring makes piston rod descending, and piston rod promotes three blades in lower end radially outward opening along the hydraulic cutter body.
The beneficial effects of the utility model: owing to adopt above-mentioned form of structure, realize that by the grappling of adopting mechanical cutter function placed in the middle hydraulic cutter is placed in the middle, with the protection outer layer sleeve, realize cutting oil sleeve pipe purpose by the hydraulic cutter cutting.The machinery cutter is connected by two public joints that cooperate with hydraulic cutter, has both improved cutting efficiency, has reduced again the risk of incised wound outer layer sleeve.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of mechanical cutter assembly shown in Figure 1;
Fig. 3 is the structural representation of the utility model waterpower cutter assembly.
Among the figure: 1, central axis; 2, brake pad; 3, top pressure spring; 4, mechanical cutter body; 5, inclined-plane dovetail groove; 6, slips; 7, slide facing; 8, main flow channel; 9, hydraulic cutter body; 10, nozzle; 11, piston; 12, back-moving spring; 13, piston rod; 14, blade; 15, two public joints that cooperate; 16, waterpower cutter assembly; 17, mechanical cutter assembly.
The specific embodiment
Such as Fig. 1, shown in 2, waterpower cutter assembly with mechanical cutter righting structure, comprise the waterpower cutter assembly, one end of the hydraulic cutter body 9 in the described waterpower cutter assembly 16 docks with central axis 1 in the mechanical cutter assembly 17 by two public joints 15 that cooperate, described mechanical cutter assembly is by mechanical cutter body 4, brake pad 2, top pressure spring 3, central axis 1, sliding facing 7 and slips 6 form, described central axis 1 passes from mechanical cutter body 4 and brake pad 2 successively, brake pad 2 is threaded with central axis 1 by sliding facing 7, the surface of described mechanical cutter body 4 is provided with inclined-plane dovetail groove 5, slips 6 is located at the surface of inclined-plane dovetail groove 5, and can be along this surface sliding, when central axis 1 rotates, brake pad promotes slips 6 and moves, make slips 6 along inclined-plane dovetail groove 5 surfaces extending radially out to the inwall that holds out against tubing and casing to mechanical cutter body 4 gradually, at this moment, the top pressure spring 3 that is located between brake pad 2 and the central axis 1 is compressed, under the effect of top pressure spring 3, can effectively prevent getting loose of brake pad.
As shown in Figure 3, described waterpower cutter assembly 16 is by hydraulic cutter body 9, main flow channel 8, nozzle 10, piston 11, back-moving spring 12, piston rod 13 and blade 14 form, described hydraulic cutter body 9 is hollow tubular structure, in being provided with, hydraulic cutter body 9 interior positions near the upper end are provided with main flow channel 8, nozzle 10 is located at the water outlet of main flow channel 8, in hydraulic cutter body 9 and be positioned at nozzle 10 below be provided with piston 11, back-moving spring 12, piston rod 13, blade 14 is hinged on the hydraulic cutter body 9, turn on pump is set up circulation, strengthen gradually discharge capacity, highly pressurised liquid produces pressure differential by the nozzle 10 in the piston 11, pushing piston 11 compression reseting springs 12 make piston rod 13 descending, three blades 14 in piston rod 13 promotion lower ends outwards open and contact with the tubing and casing inwall, the blade 14 that opens cuts tubing and casing in company with the drilling tool rotation, until tubing and casing is cut off.
It is worth mentioning that, the utility model has mainly been used transmission mechanism and the pinpoint parts of traditional mechanical cutter assembly, so be not contain cutter in the mechanical cutter assembly, avoided the defective that conventional tool exists, utilized simultaneously traditional waterpower cutting technique, realized that by rotation mechanical cutter grappling is placed in the middle, then realize cutting by the turn on pump rotation, can guarantee that hydraulic cutter cuts between two parties, both improve cutting efficiency, reduce again the risk of incised wound outer layer sleeve.
The above is preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model.Should be pointed out that for those skilled in the art, the technical solution of the utility model is made amendment or is equal to replacement, do not break away from protection domain of the present utility model.
Claims (2)
1. waterpower cutter assembly with mechanical cutter righting structure, comprise the waterpower cutter assembly, it is characterized in that: an end of the hydraulic cutter body (9) in the described waterpower cutter assembly (16) docks with central axis (1) in the mechanical cutter assembly (17) by two public joints (15) that cooperate, described mechanical cutter assembly is by mechanical cutter body (4), brake pad (2), top pressure spring (3), central axis (1), sliding facing (7) and slips (6) form, described central axis (1) passes from mechanical cutter body (4) and brake pad (2) successively, brake pad is threaded with central axis (1) by sliding facing (7), the surface of described mechanical cutter body (4) is provided with inclined-plane dovetail groove (5), slips (6) is located at the surface of inclined-plane dovetail groove (5), and can be along this surface sliding, when central axis (1) rotates, it is mobile that brake pad promotes slips (6), make slips (6) along inclined-plane dovetail groove (5) surface extending radially out to the inwall that holds out against tubing and casing to mechanical cutter body (4) gradually, at this moment, the top pressure spring (3) that is located between brake pad (2) and the central axis (1) is compressed.
2. the waterpower cutter assembly of the mechanical cutter righting structure of band according to claim 1, it is characterized in that: described waterpower cutter assembly (16) is by hydraulic cutter body (9), main flow channel (8), nozzle (10), piston (11), back-moving spring (12), piston rod (13) and three blades (14) form, described hydraulic cutter body (9) is hollow tubular structure, the position of close upper end is provided with main flow channel (8) in being provided with in the hydraulic cutter body (9), nozzle (10) is located at the water outlet of main flow channel (8), in hydraulic cutter body (9) and the below that is positioned at nozzle (10) be provided with piston (11), back-moving spring (12), piston rod (13), three blades (14) are circumferentially spaced apart along the surface of hydraulic cutter body (9), and be hinged on the hydraulic cutter body (9), highly pressurised liquid produces pressure differential by the nozzle (10) in the piston (11), pushing piston (11) compression reseting spring (12) makes piston rod (13) descending, and piston rod (13) promotes three blades in lower end (14) radially outward opening along hydraulic cutter body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220444074 CN202755936U (en) | 2012-09-03 | 2012-09-03 | Waterpower cutting knife assembly with mechanical cutting knife correction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220444074 CN202755936U (en) | 2012-09-03 | 2012-09-03 | Waterpower cutting knife assembly with mechanical cutting knife correction structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755936U true CN202755936U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220444074 Expired - Fee Related CN202755936U (en) | 2012-09-03 | 2012-09-03 | Waterpower cutting knife assembly with mechanical cutting knife correction structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202755936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828715A (en) * | 2012-09-03 | 2012-12-19 | 中国海洋石油总公司 | Hydraulic cutting knife component with centralizing structure of mechanical cutting knife |
| CN106437590A (en) * | 2016-11-28 | 2017-02-22 | 长江大学 | Hydraulic cutting device for deep sea cutting sleeve |
-
2012
- 2012-09-03 CN CN 201220444074 patent/CN202755936U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828715A (en) * | 2012-09-03 | 2012-12-19 | 中国海洋石油总公司 | Hydraulic cutting knife component with centralizing structure of mechanical cutting knife |
| CN106437590A (en) * | 2016-11-28 | 2017-02-22 | 长江大学 | Hydraulic cutting device for deep sea cutting sleeve |
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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 |
Granted publication date: 20130227 Termination date: 20180903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |