CN213684005U

CN213684005U - Novel slurry lubrication transmission shaft

Info

Publication number: CN213684005U
Application number: CN202022192639.8U
Authority: CN
Inventors: 付强; 李爽; 相雅娟
Original assignee: TIANHE OIL GROUP HUIFENG PETROLEUM EQUIPMENT CO Ltd
Current assignee: TIANHE OIL GROUP HUIFENG PETROLEUM EQUIPMENT CO Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-07-13
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a novel slurry lubrication transmission shaft, including supporting component, upper portion subassembly and lower part subassembly, supporting component includes the transmission shaft body, thrust bearing and casing, the upper portion subassembly includes first movable coil and first quiet circle, constitute first passageway between the inner wall of first quiet circle and the inner wall of first movable coil, first passageway and thrust bearing's clearance intercommunication, the lower part subassembly includes the spacer, the bearing sleeve, the semi-ring board, quiet circle of second and second movable coil, the outer wall of bearing sleeve and semi-ring board constitutes the second passageway with the inner wall of spacer, the second passageway communicates with thrust bearing's clearance, constitute the third passageway between the outer wall of second movable coil and the outer wall of the quiet circle of second, third passageway and second passageway intercommunication. The utility model discloses at the in-process of drilling, mud is cooled down and is lubricated, increase of service life through first passageway, thrust bearing's clearance, second passageway and third passageway.

Description

Novel slurry lubrication transmission shaft

Technical Field

The utility model relates to a screw rod drilling tool accessory technical field, concretely relates to novel mud lubrication transmission shaft.

Background

The screw drilling tool is a hydraulic machine, is an energy conversion device for converting pressure energy of liquid into mechanical energy, is also called a positive displacement motor, has the characteristics of low speed and large torque, is one of downhole drilling tools commonly used in current drilling engineering, and is also one of the most widely used downhole power drilling tools.

A screw drilling tool for petroleum drilling or well repairing is composed of a by-pass valve assembly, a motor assembly, a universal shaft assembly and a transmission shaft assembly, wherein the transmission shaft assembly mainly comprises a water cap, a transmission shaft shell, an upper radial bearing, a lower radial bearing, a thrust bearing and the like. The mechanical structure of the existing transmission shaft is a multi-shoulder slender shaft structure, the stress condition of the transmission shaft is complex, and the transmission shaft mainly has dynamic torque, lateral force, axial force and the like.

The existing transmission shaft adopts a sealing form, so that the heat effect cannot be effectively reduced, and because the output torque is large, parts on the transmission shaft are seriously abraded due to thermal expansion, so that the service life of a screw drilling tool is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel lubricated transmission shaft of mud to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel slurry lubrication transmission shaft comprises a supporting component, an upper component and a lower component, wherein the supporting component comprises a transmission shaft body, a thrust bearing and a shell, the thrust bearing sleeve is arranged on the outer wall of the transmission shaft body, the shell sleeve is arranged on the outer wall of the thrust bearing, the upper component comprises a first moving coil and a first static coil, the first moving coil is arranged on the outer wall of one side of the transmission shaft body, the first static coil is arranged on the outer side of the first moving coil, a first channel is formed between the inner wall of the first static coil and the inner wall of the first moving coil, the first static coil is arranged on the side part of the thrust bearing, the first channel is communicated with the gap of the thrust bearing, the lower component comprises an isolating sleeve, a pressure bearing sleeve, a semi-ring plate, a second static coil and a second moving coil, the outer wall of the isolating sleeve is glued on the inner wall of the shell, the spacer bush is abutted to the side wall of the thrust bearing, the pressure bearing bush and the semi-ring plate are sleeved on the outer wall of the transmission shaft body, the outer wall of the pressure bearing bush and the semi-ring plate and the inner wall of the spacer bush form a second channel, the second channel is communicated with a gap of the thrust bearing, the second stationary ring is installed on the inner wall of the shell, the second movable ring is sleeved on the outer wall of the transmission shaft body, a third channel is formed between the outer wall of the second movable ring and the outer wall of the second stationary ring, and the third channel is communicated with the second channel.

The utility model discloses an in the embodiment, the one end inboard of transmission shaft body is provided with the connecting hole, the other end outside of transmission shaft body is provided with extension portion, extension portion with the joint has the gasket between the first movable coil.

The utility model discloses an in the embodiment, thrust bearing's inner circle with the outer wall of transmission shaft body links to each other, thrust bearing's outer lane with the inner wall of casing links to each other.

The utility model discloses an in one embodiment, the outer wall of first quiet circle with the joint has the semicircle key between the inner wall of casing, the outer wall of first quiet circle with the inner wall of casing all is provided with the keyway.

In an embodiment of the present invention, the lateral portion of the semi-ring plate extends to the lateral portion of the pressure-bearing sleeve, and the cross section of the pressure-bearing sleeve is arc-shaped.

In an embodiment of the present invention, the lateral portion of the second moving coil is provided with an outer convex portion, a side wall of the outer convex portion and a side wall of the housing form a notch, and the notch communicates with the third channel.

To sum up, owing to adopted above-mentioned technique, the beneficial effects of the utility model are that:

the utility model discloses in the use, drilling rod and this body coupling of transmission shaft, at the in-process of drilling, the mud of production enters into thrust bearing's clearance position through the first passageway between first movable coil and the first quiet circle, then gets into the second passageway through thrust bearing's clearance, and then enters into the third passageway between second movable coil and the second quiet circle, then discharges, utilizes mud to cool down and lubricate increase of service life.

Drawings

Fig. 1 is a schematic front sectional view of the present invention;

fig. 2 is an enlarged schematic view of the utility model at a in fig. 1;

fig. 3 is an enlarged schematic view of the position B in fig. 1 according to the present invention.

In the figure: 100. a support assembly; 110. a transmission shaft body; 111. connecting holes; 112. an extension portion; 113. a gasket; 120. a thrust bearing; 130. a housing; 200. an upper assembly; 210. a first moving coil; 220. a first stationary ring; 221. a semicircular key; 230. a first channel; 300. a lower assembly; 310. a spacer sleeve; 320. a pressure bearing sleeve; 330. a semi-annular plate; 340. a second stationary ring; 350. a second moving coil; 351. an outer convex portion; 352. a notch; 360. a second channel; 370. a third channel.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific situation of the specification.

Example 1

Referring to fig. 1-3, the present invention provides a novel mud lubricating transmission shaft, which includes a support assembly 100, an upper assembly 200 and a lower assembly 300, wherein the upper assembly 200 is installed at a side portion of the support assembly 100, and the lower assembly 300 is installed at the other side of the support assembly 100, wherein the support assembly 100 supports the whole body and guides mud, the upper assembly 200 is used for entering mud, and the lower assembly 300 is used for guiding mud out.

Referring to fig. 1, 2 and 3, the supporting assembly 100 includes a transmission shaft body 110, a thrust bearing 120 and a housing 130, wherein the thrust bearing 120 is sleeved on an outer wall of the transmission shaft body 110, and when being specifically configured, the inner race of the thrust bearing 120 is coupled to the outer wall of the propeller shaft body 110, the outer race of the thrust bearing 120 is coupled to the inner wall of the housing 130, so that the inner ring of the thrust bearing 120 rotates along with the rotation of the transmission shaft body 110, and the outer ring of the thrust bearing 120 rotates along with the rotation of the transmission shaft body 110, the housing 130 is contacted with the outer wall of the drilling portion and does not rotate along with the rotation of the transmission shaft body 110, and is sleeved on the outer wall of the thrust bearing 120, and when the housing is specifically arranged, the inner side of one end of the transmission shaft body 110 is provided with a connection hole 111, the connection hole 111 is used for being connected with an external power device so as to drive the transmission shaft body 110 to rotate, and the outer side of the other end of the transmission shaft body 110 is provided with an extension part 112.

Referring to fig. 1, 2 and 3, the upper assembly 200 includes a first moving coil 210 and a first stationary coil 220, the first moving coil 210 is sleeved on an outer wall of one side of the transmission shaft body 110, the first moving coil 210 is configured to rotate along with the rotation of the transmission shaft body 110, when the upper assembly is specifically configured, a gasket 113 is clamped between the outer extension portion 112 and the first moving coil 210, the outer extension portion 112 is configured to fix the gasket 113, the first stationary coil 220 is sleeved on an outer side of the first moving coil 210, a first channel 230 is formed between an inner wall of the first stationary coil 220 and an inner wall of the first moving coil 210, the first channel 230 is configured to allow slurry to enter, the first stationary coil 220 is mounted on a side portion of an outer ring of the thrust bearing 120, when the upper assembly is specifically configured, a semicircular key 221 is clamped between an outer wall of the first stationary coil 220 and an inner wall of the housing 130, the semicircular key 221 is better configured to fix the first stationary coil 220 and the housing 130, the outer wall of the housing 220 and the inner wall of the housing 130 are both provided, the key slot is used for matching with the semi-circular key 221, so that the semi-circular key 221 can be conveniently installed, and the first channel 230 is communicated with the gap of the thrust bearing 120.

Referring to fig. 1, 2 and 3, the lower assembly 300 includes a spacer 310, a pressure-bearing sleeve 320, a half-ring plate 330, a second stationary ring 340 and a second movable ring 350, an outer wall of the spacer 310 is glued to an inner wall of the casing 130, the spacer 310 is used for separating the casing 130 from the transmission shaft body 110, the spacer 310 is in contact with a side wall of the thrust bearing 120, the pressure-bearing sleeve 320 and the half-ring plate 330 are both sleeved on the outer wall of the transmission shaft body 110, the pressure-bearing sleeve 320 and the half-ring plate 330 are matched to better protect the outer wall of the transmission shaft body 110 and increase pressure-bearing capacity, the outer walls of the pressure-bearing sleeve 320 and the half-ring plate 330 and the inner wall of the spacer 310 form a second channel 360, the second channel 360 is used for guiding mud, when the lower assembly is specifically configured, a side portion of the half-ring plate 330 extends to a side portion of the pressure-bearing sleeve 320, the half-ring plate 330 plays a role of supporting the pressure-, the section of the pressure bearing sleeve 320 is arranged in an arc shape, the second channel 360 is communicated with the gap of the thrust bearing 120, the second stationary ring 340 is installed on the inner wall of the shell 130, the second movable ring 350 is installed on the outer wall of the transmission shaft body 110 in a sleeved mode, the second movable ring 350 is used for rotating along with the rotation of the transmission shaft body 110, a third channel 370 is formed between the outer wall of the second movable ring 350 and the outer wall of the second stationary ring 340, the third channel 370 is used for discharging slurry, the third channel 370 is communicated with the second channel 360, in the specific arrangement process, the outer convex portion 351 is arranged on the side portion of the second movable ring 350, the gap 352 is formed between the side wall of the outer convex portion 351 and the side wall of the shell 130, and the gap 352 is communicated with the third channel 370.

The working principle is as follows: during use, the drill rod is connected with the transmission shaft body 110, in the drilling process, generated mud enters a gap part of the thrust bearing 120 through the first channel 230 between the first moving ring 210 and the first static ring 220, then enters the second channel 360 through the gap of the thrust bearing 120, further enters the third channel 370 between the second moving ring 350 and the second static ring 340, and then is discharged, and the mud is used for cooling and lubricating, so that the service life is prolonged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. A novel mud lubricated transmission shaft, comprising:

the supporting assembly (100) comprises a transmission shaft body (110), a thrust bearing (120) and a shell (130), wherein the thrust bearing (120) is sleeved on the outer wall of the transmission shaft body (110), and the shell (130) is sleeved on the outer wall of the thrust bearing (120);

the upper component (200) comprises a first moving coil (210) and a first static coil (220), the first moving coil (210) is sleeved on the outer wall of one side of the transmission shaft body (110), the first static coil (220) is sleeved on the outer side of the first moving coil (210), a first channel (230) is formed between the inner wall of the first static coil (220) and the inner wall of the first moving coil (210), the first static coil (220) is installed on the side part of the thrust bearing (120), and the first channel (230) is communicated with the gap of the thrust bearing (120);

the lower component (300) comprises a spacer bush (310), a pressure bearing bush (320), a half ring plate (330), a second stationary ring (340) and a second movable ring (350), the outer wall of the spacer bush (310) is glued to the inner wall of the shell (130), the spacer bush (310) is abutted to the side wall of the thrust bearing (120), the pressure bearing bush (320) and the half ring plate (330) are sleeved on the outer wall of the transmission shaft body (110), the outer walls of the pressure bearing bush (320) and the half ring plate (330) and the inner wall of the spacer bush (310) form a second channel (360), the second channel (360) is communicated with the gap of the thrust bearing (120), the second stationary ring (340) is installed on the inner wall of the shell (130), the second movable ring (350) is sleeved on the outer wall of the transmission shaft body (110), and a third channel (350) is formed between the outer wall of the second movable ring (350) and the outer wall of the second stationary ring (340) 370) The third passage (370) communicates with the second passage (360).

2. The novel mud lubricated transmission shaft of claim 1, wherein: the one end inboard of transmission shaft body (110) is provided with connecting hole (111), the other end outside of transmission shaft body (110) is provided with extension portion (112), extension portion (112) with joint has gasket (113) between first movable coil (210).

3. The novel mud lubricated transmission shaft of claim 1, wherein: the inner ring of the thrust bearing (120) is connected with the outer wall of the transmission shaft body (110), and the outer ring of the thrust bearing (120) is connected with the inner wall of the shell (130).

4. The novel mud lubricated transmission shaft of claim 1, wherein: the outer wall of first quiet circle (220) with the joint has semicircle key (221) between the inner wall of casing (130), the outer wall of first quiet circle (220) with the inner wall of casing (130) all is provided with the keyway.

5. The novel mud lubricated transmission shaft of claim 1, wherein: the side part of the semi-ring plate (330) extends to the side part of the pressure bearing sleeve (320), and the section of the pressure bearing sleeve (320) is arranged in an arc shape.

6. The novel mud lubricated transmission shaft of claim 1, wherein: an outer protruding part (351) is arranged on the side part of the second moving coil (350), a notch (352) is formed by the side wall of the outer protruding part (351) and the side wall of the shell (130), and the notch (352) is communicated with the third channel (370).