CN216741450U

CN216741450U - Water injection valve device

Info

Publication number: CN216741450U
Application number: CN202122533691.XU
Authority: CN
Inventors: 郑向勇; 邵金海; 马喆
Original assignee: Shaanxi Yanchang Petroleum Jinshi Drilling Equipment Co Ltd
Current assignee: Shaanxi Yanchang Petroleum Jinshi Drilling Equipment Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-06-14
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a water injection valve device, comprising: the device comprises a water inlet pipe, a liquid inlet, a liquid outlet, a driving motor, a screw rod, a braking pin, a sliding block and a ball body; the outer wall of the water inlet pipe is provided with a mounting cavity; the two ends of the mounting cavity are respectively connected with an upper plug and a lower plug in a sealing manner; the output end of the driving motor is in transmission connection with one end of the screw rod; the lead screw is in threaded connection with the sliding block; the braking pin is connected with the sliding block in a sliding way; the ball body is fixedly connected with the sliding block; the lower plug is provided with a flow passage; the liquid inlet is positioned on the water inlet pipe and is communicated with the water inlet of the overflowing channel; and the liquid outlet is positioned on the wall of the mounting cavity and is communicated with the mounting cavity and the oil production layer. When the water injection valve is in a water injection working state and a non-water injection working state, the opening and closing of the overflowing channel can be completed by the forward and reverse rotation of the driving motor, the water injection valve is powered on when needed, relevant devices can work correspondingly without continuous power on, the cost is saved, and the reliability is high.

Description

Water injection valve device

Technical Field

The utility model belongs to the technical field of water injection wellhead equipment, and particularly relates to a water injection valve device.

Background

After the oil field is put into development, the energy of the oil layer is continuously consumed along with the increase of the exploitation time, so that the pressure of the oil layer is continuously reduced, underground crude oil is greatly degassed, the viscosity is increased, the yield of the oil well is greatly reduced, and even the jet stop and the production stop can be realized. In order to compensate for the underground deficit caused by the production of crude oil, maintain or improve the pressure of an oil layer, realize high and stable yield of an oil field and obtain higher recovery ratio, water needs to be injected into the oil field to maintain or recover the pressure of the oil layer, so that the oil reservoir has stronger driving force to improve the production speed and the recovery ratio of the oil reservoir.

The water injection valve determines the amount of water injected into the separate injection interval as an opening and closing device for controlling the downhole fluid passage of the water injection well. In the prior art, the water injection valve adopts an electromagnetic valve device, and the opening and closing of the valve are completed by means of the energization and the power failure of a coil, so that the opening and the closing of a fluid channel are realized, but the fluid channel needs to be energized for a long time for keeping open, not only the cost is increased, but also the circuit of the water injection valve is easy to age due to the long-time energization work, the reliability is lower, and the service life is shorter.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems in the prior art, the present invention provides a water filling valve device. The technical problem to be solved by the utility model is realized by the following technical scheme:

a fill valve apparatus comprising: the device comprises a water inlet pipe, a liquid inlet, a liquid outlet, a driving motor, a screw rod, a braking pin, a sliding block and a ball body;

the outer wall of the water inlet pipe is provided with an installation cavity, and two ends of the water inlet pipe are connected with an external oil pipe;

two ends of the installation cavity are respectively connected with an upper plug and a lower plug in a sealing manner;

the driving motor is fixedly arranged in the installation cavity, and the output end of the driving motor is in transmission connection with one end of the lead screw;

the lead screw is positioned in the mounting cavity and is in threaded connection with the sliding block;

the braking pin is fixedly arranged in the installation cavity and is in sliding connection with the sliding block;

the ball body is positioned in the mounting cavity and fixedly connected with the sliding block;

the lower plug is provided with a flow passage;

one end of the overflowing channel is close to the ball body and is communicated with the mounting cavity;

the liquid inlet is positioned on the water inlet pipe and is communicated with the water inlet of the overflowing channel;

and the liquid outlet is positioned on the wall of the mounting cavity and is communicated with the mounting cavity and the oil production layer.

In one embodiment of the utility model, an upper protective pipe is sleeved on the water inlet pipe, and an accommodating cavity is formed in the outer wall of the water inlet pipe;

the cavity between the upper protective pipe and the water inlet pipe and the accommodating cavity form the mounting cavity;

one end of the upper protection pipe is hermetically connected with the upper plug, and the other end of the upper protection pipe is hermetically connected with the outer wall of the water inlet pipe;

one end of the accommodating cavity, which is far away from the upper protection pipe, is hermetically connected with the lower plug;

the driving motor, the lead screw, the pawl pin and the ball body are all located in the accommodating cavity.

In one embodiment of the utility model, the output end of the driving motor is in transmission connection with one end of the lead screw through a speed reducer, a coupler and a bearing;

the output end of the driving motor is in transmission connection with the input end of the speed reducer, the output end of the speed reducer is in transmission connection with one end of the coupler, the other end of the coupler is fixedly connected with one end of the lead screw, one end of the lead screw is fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the accommodating cavity.

In one embodiment of the present invention, a sealing shaft sleeve and at least one first sealing ring are further disposed in the mounting cavity;

the sealing shaft sleeve is sleeved at the position of the lead screw close to the driving motor;

the first sealing ring is in clearance fit with the lead screw and is positioned between the lead screw and the sealing shaft sleeve.

In one embodiment of the utility model, a sliding groove extending along a direction parallel to the axial direction of the lead screw is formed on the outer wall of the sliding block;

and the braking pin is connected with the sliding groove in a sliding manner.

In one embodiment of the utility model, at least one second sealing ring is arranged between the upper protective pipe and the upper plug.

In one embodiment of the utility model, the axial direction of the screw is parallel to the axial direction of the water inlet pipe.

The utility model has the beneficial effects that:

the driving motor drives the lead screw to rotate in a reverse rotation mode, the sliding block moves along the axial direction of the lead screw under the limiting of the turning pin and the driving of the lead screw so as to drive the ball to move, when the ball moves to one end of the overflowing channel of the lower plug, the overflowing channel is plugged and closed, when the overflowing channel needs to be opened, the driving motor rotates in a forward direction to drive the lead screw to rotate in a forward direction, so that the ball leaves one end of the overflowing channel, and the overflowing channel is opened to inject water. When the water injection valve is in a water injection working state and a non-water injection working state, the opening and closing of the overflowing channel can be completed by the forward and reverse rotation of the driving motor, the water injection valve is powered on when needed, relevant devices can work correspondingly without continuous power on, the cost is saved, and the reliability is high.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of a water filling valve device according to an embodiment of the present invention;

fig. 2 is a partial structural schematic diagram of a water filling valve device according to an embodiment of the present invention.

Description of reference numerals:

10-a water inlet pipe; 11-a liquid inlet; 12-a liquid outlet; 13-mounting the cavity; 14-upper plug; 15-lower plug; 151-an overflow channel; 16-an upper protective tube; 161-a second seal ring; 17-a containment chamber; 18-a cavity; 20-a drive motor; 21-a speed reducer; 22-a coupling; 23-a bearing; 24-sealing the shaft sleeve; 25-a first seal ring; 26-a hold-down bolt; 30-a lead screw; 40-pawl pin; 50-a slide block; 51-a chute; 60-sphere.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

Example one

Referring to fig. 1 and 2, a filling valve device includes: water inlet pipe 10, liquid inlet 11, liquid outlet 12, driving motor 20, lead screw 30, pawl 40, slider 50 and spheroid 60. The outer wall of the water inlet pipe 10 is provided with a mounting cavity 13. The water inlet pipe 10 is positioned between the two sections of oil pipes, and two ends of the water inlet pipe 10 are respectively connected with the two sections of oil pipes. The two ends of the mounting cavity 13 are respectively connected with an upper plug 14 and a lower plug 15 in a sealing manner. The driving motor 20 is fixedly arranged in the mounting cavity 13, and the output end of the driving motor 20 is in transmission connection with one end of the screw rod 30. The lead screw 30 is located in the mounting cavity 13, and the lead screw 30 is in threaded connection with the slider 50.

The braking pin 40 is fixedly arranged in the mounting cavity 13, and the braking pin 40 is connected with the sliding block 50 in a sliding manner. The ball 60 is located in the mounting cavity 13, and the ball 60 is fixedly connected with the sliding block 50. The lower plug 15 is provided with a flow passage 151. The ball 60 is fixedly connected with one end of the slide 50 facing the flow passage 151. One end of the flow passage 151 is adjacent to the ball 60 and communicates with the mounting cavity 13. The liquid inlet 11 is located on the water inlet pipe 10 and is communicated with the water inlet of the overflowing channel 151. The liquid outlet 12 is located on the cavity wall of the installation cavity 13, and the liquid outlet 12 is communicated with the installation cavity 13 and the oil production layer.

In this embodiment, in the case of separate-zone water injection to the oil well, a water injection valve device is required to be installed on each zone, and the water injection valve device is installed between two sections of oil pipes of a single oil production zone. During the water injection gets into inlet tube 10 from oil pipe, can get into the passageway 151 that overflows through inlet 11 and the water inlet of overflowing passageway 151, when overflowing passageway 151 and open, the water injection flows out to this layer oil recovery layer from liquid outlet 12 through overflowing passageway 151, and simultaneously, the water in inlet tube 10 continues to flow down in the inlet tube 10 of the water injection valve device of next layer oil recovery layer to the analogize carries out the layering water injection.

The opening and closing of the overflowing channel 151 are realized through the movement of the ball 60, specifically, when the overflowing channel 151 needs to be opened (at this time, the ball 60 contacts with one end of the overflowing channel 151 to plug one end of the overflowing channel 151), the driving motor 20 is electrically operated, the driving motor 20 rotates reversely to drive the lead screw 30 to rotate, the braking pin 40 is fixedly arranged in the installation cavity 13, the braking pin 40 is slidably connected with the sliding block 50, under the limit of the braking pin 40, the sliding block 50 can slide along the axial direction of the lead screw 30 under the driving of the lead screw 30 and can not rotate along with the lead screw 30, the sliding block 50 drives the ball 60 to leave one end of the overflowing channel 151, so that the overflowing channel 151 is opened, then the driving motor 20 stops working, water in the overflowing channel 151 enters the installation cavity 13 and flows out from the liquid outlet 12 to the oil production layer. When the overflowing channel 151 needs to be closed, the driving motor 20 works again, the driving motor 20 rotates forward to drive the screw rod 30 to rotate, the sliding block 50 drives the ball 60 to approach one end of the overflowing channel 151 until the ball contacts the overflowing channel 151 to block the overflowing channel 151, the overflowing channel 151 is closed, and the driving motor 20 stops working.

In the water injection valve device of the embodiment, when the water injection valve device is in a water injection working state or a non-water injection working state, the overflow channel 151 can be opened and closed by forward and reverse rotation of the driving motor 20, the water injection valve is powered on when needed, relevant devices can work correspondingly without continuous power on, the cost is saved, the aging speed of a circuit is delayed, the reliability is high, the service life is prolonged, and meanwhile, the water injection valve device is simple in structure and easy to maintain.

In a feasible implementation manner, the long axis direction of the water inlet pipe 10 extends along the vertical direction underground, the screw rod 30 is vertically arranged, and the axial direction of the screw rod 30 is parallel to the axial direction of the water inlet pipe 10. The structure is more compact, and is small, is convenient for use in the pit. The liquid outlet 12 is located at the upper side of the lower plug 15, the flow passage 151 extends vertically, and the long axis of the mounting cavity 13 extends vertically.

In a feasible implementation manner, one end of the overflowing channel 151 is open, the sphere 60 can be abutted against the opening to close the overflowing channel 151, a part of the sphere 60 is located in the overflowing channel 151, and the rest of the sphere is located outside the overflowing channel 151, so that the surface of the sphere 60 is smooth, and the abutting against the opening can be better attached to the opening to realize the plugging of the overflowing channel 151. The ball body 60 is made of silicon nitride materials, the surface smoothness of the ball body 60 is better, and the ball body can be better attached to the opening of the overflowing channel 151 to better plug the overflowing channel 151.

Further, as shown in fig. 1 and 2, a sliding groove 51 extending in a direction parallel to the axial direction of the screw shaft 30 is formed in an outer wall of the slider 50. The tumbler pins 40 are slidably connected to the slide slots 51. In this embodiment, one end of the detent pin 40 is fixed in the mounting screw hole of the mounting cavity 13, the other end of the detent pin 40 extends into the sliding groove 51, the detent pin 40 limits the slider 50 through the sliding groove 51, and the slider 50 can move along the lead screw 30 and cannot rotate along with the lead screw 30 when the lead screw 30 moves.

Further, as shown in fig. 1 and 2, an upper protection pipe 16 is sleeved on the water inlet pipe 10, and an accommodating cavity 17 is opened on the outer wall of the water inlet pipe 10. The cavity 18 between the upper protection tube 16 and the water inlet pipe 10 and the accommodating cavity 17 constitute the mounting cavity 13. One end of the upper protection pipe 16 is connected with the upper plug 14 in a sealing way, and the other end of the upper protection pipe 16 is connected with the outer wall of the water inlet pipe 10 in a sealing way. The end of the receiving chamber 17 remote from the upper protective tube 16 is sealingly connected to the lower plug 15. The drive motor 20, the lead screw 30, the pawl 40 and the ball 60 are located in the receiving chamber 17. The tumbler pins 40 are fixed in the housing cavities 17. In this embodiment, the space between the upper protection pipe 16 and the water inlet pipe 10 and the accommodating cavity 17 on the outer wall of the water inlet pipe 10 form the mounting cavity 13. The space between the upper protection tube 16 and the water inlet tube 10 is a sealed space that can be used for installing the circuit of the water filling valve device.

When the overflowing channel 151 is opened, water enters the accommodating cavity 17 through the overflowing channel 151 and flows out of the liquid outlet 12 to the oil production layer.

Further, as shown in fig. 1 and 2, an output end of the driving motor 20 is in transmission connection with one end of the lead screw 30 through a speed reducer 21, a coupling 22 and a bearing 23. The output end of the driving motor 20 is in transmission connection with the input end of the speed reducer 21, the output end of the speed reducer 21 is in transmission connection with one end of the coupler 22, the other end of the coupler 22 is fixedly connected with one end of the lead screw 30, one end of the lead screw 30 is fixedly connected with the inner ring of the bearing 23, and the outer ring of the bearing 23 is fixedly connected with the accommodating cavity 17. In the present embodiment, the inner ring of the bearing 23 is fixed with the outer ring of the bearing 23, the inner ring can rotate, and the bearing 23 can support the lead screw 30. In this embodiment, the driving motor 20 is pressed in the accommodating cavity 17 by a pressing bolt 26 provided at the end. The driving motor 20 of the embodiment drives the lead screw 30 to move through the coupler 22, and the bearing 23 supports the lead screw 30, so that the lead screw 30 moves more stably.

Further, as shown in fig. 1 and 2, a sealing bushing 24 and at least one first sealing ring 25 are disposed in the mounting cavity 13. The sealing shaft sleeve 24 is sleeved on the position of the lead screw 30 close to the driving motor 20. First seal ring 25 the first seal ring 25 is located between the lead screw 30 and the seal bushing 24 in clearance fit with the lead screw 30. The sealing shaft sleeve 24 and the first sealing ring 25 can enable the screw rod 30 to rotate, and water entering the mounting cavity 13 cannot enter the driving motor 20 side through the sealing shaft sleeve 24, so that the sealing performance is good.

Specifically, the seal bushing 24 is disposed within the housing chamber 17.

Further, as shown in fig. 1 and 2, at least one second sealing ring 161 is disposed between the upper protection tube 16 and the upper plug 14. In this embodiment, the space between the upper protection tube 16 and the water inlet pipe 10 is used for installing a circuit of the water injection valve device, and the second sealing ring 161 can seal the space between the upper plug 14 and the upper protection tube 16, so as to prevent the fluid in the well from entering the upper protection tube 16 and damaging the circuit, thereby improving the safety and reliability.

Meanwhile, the other end of the upper protection pipe 16 is connected with the outer wall of the water inlet pipe 10 in a sealing way through a sealing ring.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. A fill valve apparatus, comprising: the device comprises a water inlet pipe (10), a liquid inlet (11), a liquid outlet (12), a driving motor (20), a screw rod (30), a pawl pin (40), a slide block (50) and a sphere (60);

the outer wall of the water inlet pipe (10) is provided with a mounting cavity (13), and two ends of the water inlet pipe are connected with an external oil pipe;

two ends of the mounting cavity (13) are respectively connected with an upper plug (14) and a lower plug (15) in a sealing manner;

the driving motor (20) is fixedly arranged in the mounting cavity (13), and the output end of the driving motor is in transmission connection with one end of the lead screw (30);

the lead screw (30) is positioned in the mounting cavity (13) and is in threaded connection with the sliding block (50);

the braking pin (40) is fixedly arranged in the mounting cavity (13) and is in sliding connection with the sliding block (50);

the ball body (60) is positioned in the mounting cavity (13) and is fixedly connected with the sliding block (50);

the lower plug (15) is provided with an overflowing channel (151);

one end of the overflowing channel (151) is close to the ball body (60) and is communicated with the mounting cavity (13);

the liquid inlet (11) is positioned on the water inlet pipe (10) and is communicated with a water inlet of the overflowing channel (151);

the liquid outlet (12) is positioned on the wall of the mounting cavity (13) and communicated with the mounting cavity (13) and the oil production layer.

2. The water injection valve device according to claim 1, wherein an upper protection pipe (16) is sleeved on the water inlet pipe (10), and an accommodating cavity (17) is formed in the outer wall of the water inlet pipe (10);

the mounting cavity (13) is formed by a cavity (18) between the upper protective pipe (16) and the water inlet pipe (10) and the accommodating cavity (17);

one end of the upper protection pipe (16) is hermetically connected with the upper plug (14), and the other end of the upper protection pipe is hermetically connected with the outer wall of the water inlet pipe (10);

one end of the accommodating cavity (17) far away from the upper protective pipe (16) is connected with the lower plug (15) in a sealing way;

the driving motor (20), the lead screw (30), the pawl pin (40) and the ball body (60) are all located in the accommodating cavity (17).

3. The water injection valve device according to claim 2, wherein the output end of the driving motor (20) is in transmission connection with one end of the lead screw (30) through a speed reducer (21), a coupler (22) and a bearing (23);

the output of driving motor (20) with the input transmission of speed reducer (21) is connected, the output of speed reducer (21) with the one end transmission of shaft coupling (22) is connected, the other end of shaft coupling (22) with the one end fixed connection of lead screw (30), the one end of lead screw (30) with the inner circle fixed connection of bearing (23), the outer lane of bearing (23) with hold chamber (17) fixed connection.

4. A filling valve device according to claim 3, wherein a sealing bushing (24) and at least one first sealing ring (25) are further arranged in the mounting chamber (13);

the sealing shaft sleeve (24) is sleeved at the position, close to the driving motor (20), of the lead screw (30);

the first sealing ring (25) is in clearance fit with the lead screw (30) and is positioned between the lead screw (30) and the sealing shaft sleeve (24).

5. The water injection valve device according to claim 1, wherein a sliding groove (51) extending in a direction parallel to the axial direction of the screw (30) is formed in an outer wall of the slider (50);

the pawl pin (40) is connected with the sliding groove (51) in a sliding mode.

6. A filling valve device according to claim 2, wherein at least one second sealing ring (161) is arranged between the upper protective tube (16) and the upper stopper (14).

7. A filling valve device according to claim 1, wherein the axial direction of the screw (30) is parallel to the axial direction of the inlet pipe (10).