CN216811672U

CN216811672U - Large-displacement rotary valve pulse generating device

Info

Publication number: CN216811672U
Application number: CN202123185710.0U
Authority: CN
Inventors: 高海啸; 陈东阳; 李帅昌
Original assignee: Liaoning Tianxin Petroleum Equipment Technology Co ltd
Current assignee: BEIJING LIUHE GREATNESS TECHNOLOGY CO LTD
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-24
Anticipated expiration: 2031-12-17

Abstract

The utility model belongs to the field of petroleum downhole instruments, and relates to a large-displacement rotary valve pulse generator.A valve barrel is fixed on the inner side of a non-magnetic drill collar, a core rod is coaxially assembled on the inner side of a connecting barrel, the end head of the connecting barrel is fixedly assembled in a second valve barrel assembling cavity of the valve barrel, a sealing component is arranged in a gap between a third connecting barrel assembling cavity and the core rod, a bearing component is arranged in the gap between the second connecting barrel assembling cavity and the core rod, a wear-resistant sleeve is coaxially arranged in the gap between the third valve barrel assembling cavity and the core rod, a rotor is assembled at the end part of the core rod and is fixed through a rotor fixer, and a wear-resistant ring is coaxially arranged in a first valve barrel assembling cavity outside the rotor; the stator is coaxially arranged in a first valve cylinder assembly cavity between the wear-resisting ring and the stator fixer; the current-limiting ring is fixedly arranged on the inner side of the inlet end of the non-magnetic drill collar. The large-displacement rotary valve pulse generating device can improve the erosion resistance of the device, increase the overflowing area, improve the service cycle of the device and avoid frequent maintenance and replacement.

Description

Large-displacement rotary valve pulse generating device

Technical Field

The utility model belongs to the field of petroleum underground instruments, and particularly relates to a large-displacement rotary valve pulse generating device.

Background

The rotary valve pulse generating device is widely applied to various underground exploration instruments and is used for measuring mud, liquid fluid and the like in an exploration environment and generating and outputting a controllable decoded mud or liquid fluid pressure signal. With the increasing complexity of exploration environment and the increasing demand of exploration efficiency, the large-displacement downhole pulse generating device is increasingly applied to exploration engineering. In practical application, due to the fact that the discharge capacity is too high, the pulse of the existing large-discharge underground pulse generating device is prone to key-off when the pulser acts, so that the instrument cannot work normally, the instrument is seriously damaged, the erosion resistance is poor, the flow area is small, the service cycle of the device is short, frequent maintenance and replacement are needed, and the continuous operation efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a large-displacement rotary valve pulse generating device.

According to one aspect of the utility model, a large-displacement rotary valve pulse generating device is provided, which comprises a flow limiting ring, a stator fixer, a stator, a rotor, a valve cylinder, a non-magnetic drill collar, a connecting cylinder, a core rod, a bearing assembly, a sealing assembly, a wear-resistant sleeve, a rotor fixer and a wear-resistant ring, wherein a first valve cylinder assembly cavity, a third valve cylinder assembly cavity and a second valve cylinder assembly cavity which are communicated with each other are arranged on the inner side of the valve cylinder; one end of the connecting cylinder is provided with a connecting cylinder end socket, and a first assembling cavity, a second assembling cavity and a third assembling cavity of the connecting cylinder which are communicated with each other are coaxially arranged on the inner side of the connecting cylinder; one end of the core rod is provided with a core rod fixing cavity, and the outer wall of the core rod is provided with a semicircular key groove; the sealing assembly comprises a sealing ring, a double-groove sealing ring and a sealing retainer ring; the valve cylinder is fixed on the inner side of the non-magnetic drill collar, the core rod is coaxially assembled on the inner side of the connecting cylinder, the end of the connecting cylinder is fixedly assembled in a second assembling cavity of the valve cylinder, the sealing component is arranged in a gap between the third assembling cavity of the connecting cylinder and the core rod, the bearing component is arranged in a gap between the second assembling cavity of the connecting cylinder and the core rod, the wear-resistant sleeve is coaxially arranged in a gap between the third assembling cavity of the valve cylinder and the core rod, the rotor is assembled at the end part of the core rod and fixed through the rotor fixer, and the wear-resistant rings are coaxially arranged in a first assembling cavity of the valve cylinder on the outer side of the rotor; the stator is coaxially arranged in a first valve barrel assembly cavity between the wear-resisting ring and the stator fixer; the current-limiting ring is fixedly arranged on the inner side of the inlet end of the non-magnetic drill collar.

According to the exemplary embodiment of the utility model, the plurality of connecting holes are uniformly distributed on the periphery of the opening part of the outer end of the first valve cylinder assembly cavity, the plurality of locking pin holes are uniformly distributed on the periphery of the middle part of the first valve cylinder assembly cavity, and the plurality of threaded holes are distributed on the periphery of the axial bottom part of the second valve cylinder assembly cavity along the axial line of the second valve cylinder assembly cavity.

According to an exemplary embodiment of the present invention, inner diameters of the first fitting chamber of the connector barrel, the second fitting chamber of the connector barrel, and the third fitting chamber of the connector barrel sequentially increase.

According to an exemplary embodiment of the utility model, a plurality of fastening through holes are distributed circumferentially along the connector barrel axis within the connector barrel head.

According to the exemplary embodiment of the present invention, the sealing retainer rings are disposed between the sealing ring and the double-groove sealing ring and at the outer end of the double-groove sealing ring, and the inner side of one end of the sealing ring and the inner sides of both ends of the double-groove sealing ring are fixedly assembled with the rotary sealing ring, respectively.

Compared with the prior art, the large-discharge rotary valve pulse generator can improve the erosion resistance of the device, increase the flow area, improve the service cycle of the device and avoid frequent maintenance and replacement through the comprehensive structural design.

Drawings

FIG. 1 is a schematic diagram of a high displacement rotary valve pulse generator according to the present invention;

FIG. 2 is a schematic structural view of a valve cartridge according to the present invention;

FIG. 3 is a schematic structural view of a connector barrel according to the present invention;

FIG. 4 is a schematic partial structural view of a core rod according to the present invention;

FIG. 5 is a schematic structural view of a seal assembly according to the present invention;

in the figure, A-a flow-limiting ring, B-a stator holder, C-a stator, D-a rotor, E-a valve cylinder, F-a non-magnetic drill collar, G-a connecting cylinder, H-a core rod, I-a bearing assembly, J-a sealing assembly, K-a wear-resistant sleeve, L-a rotor holder, M-a wear-resistant ring, E1-a valve cylinder first assembly cavity, E2-a valve cylinder second assembly cavity, E3-a connecting hole, E4-a locking pin hole, E5-a threaded hole, E6-a valve cylinder third assembly cavity; g1-connecting cylinder end head, G2-connecting cylinder first assembling cavity, G3-connecting cylinder second assembling cavity, G4-connecting cylinder third assembling cavity and G5-fastening through hole; h1-core bar fixing cavity, H2-semicircular key groove; j1-end face seal ring, J2-rotary seal ring, J3-double groove seal ring and J4-sealing retainer ring.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments.

As shown in fig. 1, an embodiment of the present invention provides a large-displacement rotary valve pulse generator, which includes a flow-limiting device a, a stator holder B, a stator C, a rotor D, a valve cylinder E, a non-magnetic drill collar F, a connecting cylinder G, a core rod H, a bearing assembly I, a sealing assembly J, a wear-resistant sleeve K, a rotor holder L, and a wear-resistant ring M.

Specifically, as shown in fig. 2, a valve cylinder first assembling chamber E1, a valve cylinder third assembling chamber E6 and a valve cylinder second assembling chamber E2 which are communicated with each other are arranged inside the valve cylinder E; the connecting holes E3 are circumferentially and uniformly distributed at the opening part of the outer end of the valve cylinder first assembling cavity E1, the locking pin holes E4 are circumferentially and uniformly distributed at the middle part of the valve cylinder first assembling cavity E1, and the threaded holes E5 are circumferentially distributed at the axial bottom part of the valve cylinder second assembling cavity E2 along the axis of the valve cylinder second assembling cavity E2.

As shown in fig. 3, a connector cylinder end G1 is provided at one end of the connector cylinder G, and a connector cylinder first fitting chamber G2, a connector cylinder second fitting chamber G3, and a connector cylinder third fitting chamber G4, which communicate with each other, are coaxially provided inside the connector cylinder G. The inner diameters of the connector barrel first fitting chamber G2, the connector barrel second fitting chamber G3, and the connector barrel third fitting chamber G4 increase in this order. A plurality of fastening through holes G5 are distributed in the connecting cylinder end G1 along the circumference of the axis of the connecting cylinder G, and the fastening through holes G5 correspond to the threaded holes E5 one by one.

As shown in FIG. 4, a core rod fixing cavity H1 is arranged at one end of the core rod H, and a semicircular key groove H2 is arranged on the outer wall of the core rod H.

As shown in fig. 5, seal assembly J includes seal ring J1, double groove seal ring J3, and seal retainer J4. The sealing retainer rings J4 are arranged between the sealing ring J1 and the double-groove sealing ring J3 and at the outer end of the double-groove sealing ring J3, and the inner side of one end of the sealing ring J1 and the inner sides of two ends of the double-groove sealing ring J3 are fixedly assembled with the rotary sealing ring J2 respectively.

As shown in fig. 1, the valve cylinder E is fixed inside the non-magnetic drill collar F, the core rod H is coaxially assembled inside the connecting cylinder G, the connecting cylinder end G1 of the connecting cylinder G is fixedly assembled inside the valve cylinder second assembling cavity E2 of the valve cylinder E, the seal assembly J is arranged in the gap between the connecting cylinder third assembling cavity G4 and the core rod H, the bearing assembly I is arranged in the gap between the connecting cylinder second assembling cavity G3 and the core rod H, the wear-resistant sleeve K is coaxially arranged in the gap between the valve cylinder third assembling cavity E6 and the core rod H, the rotor D is assembled at the end of the core rod H, the rotor D is connected with the core rod H through a semicircular key groove H2 and a semicircular key (not shown) and is fixed through a rotor holder L assembled inside the core rod fixing cavity H1, and the plurality of wear-resistant rings M are coaxially arranged inside the valve cylinder first assembling cavity E1 outside the rotor D; the stator C is coaxially arranged in a first valve barrel assembly cavity E1 between the wear-resisting ring M and a stator fixer B, the stator fixer B is fixed on the valve barrel E through a fastener (not shown) arranged in a connecting hole E3, and the stator C is fixed through a locking pin arranged in a locking pin hole E4; the flow-limiting ring A is fixedly arranged on the inner side of the inlet end of the non-magnetic drill collar F.

The wear-resistant sleeve K and the wear-resistant ring M can prolong the service life of the component. When a motor reducer (not shown) transmits torque to the core rod H, the core rod H drives the rotor D to rotate, and the rotor D is controlled to be opened and closed to form a mud pulse signal. The core rod H is connected with the rotor D through a rotor fixer L and is stopped through a semicircular key.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A large-displacement rotary valve pulse generating device is characterized by comprising a flow limiting ring (A), a stator fixer (B), a stator (C), a rotor (D), a valve cylinder (E), a non-magnetic drill collar (F), a connecting cylinder (G), a core rod (H), a bearing assembly (I), a sealing assembly (J), a wear-resistant sleeve (K), a rotor fixer (L) and a wear-resistant ring (M), wherein a valve cylinder first assembling cavity (E1), a valve cylinder third assembling cavity (E6) and a valve cylinder second assembling cavity (E2) which are communicated with one another are arranged on the inner side of the valve cylinder (E); one end of the connecting cylinder (G) is provided with a connecting cylinder end head (G1), and a connecting cylinder first assembling cavity (G2), a connecting cylinder second assembling cavity (G3) and a connecting cylinder third assembling cavity (G4) which are communicated with each other are coaxially arranged on the inner side of the connecting cylinder (G); one end of the core rod (H) is provided with a core rod fixing cavity (H1), and the outer wall of the core rod (H) is provided with a semicircular key groove (H2); the sealing assembly (J) comprises a sealing ring (J1), a double-groove sealing ring (J3) and a sealing retainer ring (J4); the valve cylinder (E) is fixed on the inner side of the non-magnetic drill collar (F), the core rod (H) is coaxially assembled on the inner side of the connecting cylinder (G), the connecting cylinder end (G1) of the connecting cylinder (G) is fixedly assembled in a valve cylinder second assembling cavity (E2) of the valve cylinder (E), the sealing component (J) is arranged in a gap between a connecting cylinder third assembling cavity (G4) and the core rod (H), the bearing component (I) is arranged in a gap between a connecting cylinder second assembling cavity (G3) and the core rod (H), the wear-resisting sleeve (K) is coaxially arranged in a gap between the valve cylinder third assembling cavity (E6) and the core rod (H), the rotor (D) is assembled at the end part of the core rod (H) and fixed through the rotor fixer (L), and a plurality of wear-resisting rings (M) are arranged in a valve cylinder first assembling cavity (E1) on the outer side of the rotor (D); the stator (C) is coaxially arranged in a first valve cylinder assembly cavity (E1) between the wear-resisting ring (M) and the stator holder (B); the flow-limiting ring (A) is fixedly arranged on the inner side of the inlet end of the non-magnetic drill collar (F).

2. A large displacement rotary valve pulse generating device as defined in claim 1, wherein the plurality of connecting holes (E3) are circumferentially and uniformly distributed in the outer end opening portion of the first valve cylinder assembling chamber (E1), the plurality of locking pin holes (E4) are circumferentially and uniformly distributed in the middle portion of the first valve cylinder assembling chamber (E1), and the plurality of threaded holes (E5) are circumferentially distributed in the axial bottom portion of the second valve cylinder assembling chamber (E2) along the axial line of the second valve cylinder assembling chamber (E2).

3. A large displacement rotary valve pulse generating apparatus as claimed in claim 1, wherein the inner diameters of the connecting cylinder first fitting chamber (G2), the connecting cylinder second fitting chamber (G3) and the connecting cylinder third fitting chamber (G4) are increased in order.

4. A large volume rotary valve pulse generating device as defined in claim 3 wherein a plurality of fastening through holes (G5) are circumferentially distributed in the connector barrel head (G1) along the axis of the connector barrel (G).

5. A large displacement rotary valve pulse generating device as claimed in claim 1, wherein the sealing rings (J4) are disposed between the sealing ring (J1) and the double groove sealing ring (J3) and the outer end of the double groove sealing ring (J3), and the inner side of one end of the sealing ring (J1) and the inner side of both ends of the double groove sealing ring (J3) are respectively and fixedly assembled with the rotary sealing ring (J2).