CN207363660U - A kind of anticlogging impulse generator - Google Patents

Abstract

The utility model relates to the technical field of pulse generators, in particular to an anti-clogging pulse generator, which includes a casing, the casing is provided with a liquid inlet hole and a liquid outlet hole, a pulse control valve is installed in the liquid outlet hole, and a guide core is also included. Valve, pulse valve head, reset member and filter assembly, the pulse valve head is slidably arranged on the guide core valve, one end of the filter assembly abuts against one end of the pulse valve head, and the filter assembly is provided with a first filter hole communicating with the liquid inlet hole, The guide core valve is provided with a first diversion hole and a bar-shaped hole, and the pulse valve head and the guide core valve form a closed accommodating cavity, and the accommodating cavity communicates with the bar-shaped hole. The utility model performs secondary filtration on the mud entering the accommodating cavity through the strip-shaped holes, so as to prevent the large-grained silt from entering the accommodating cavity, and prevent the large-grained silt from being difficult to discharge and cause the silt to be deposited in the accommodating cavity Or block the strip hole, the pulse generator will not be blocked or stuck, and the service life of the pulse generator will be extended.

Description

An anti-clogging pulse generator

technical field

The utility model relates to the technical field of pulse generators, in particular to an anti-blocking pulse generator.

Background technique

Drilling equipment is an indispensable tool in the process of oil exploration and drilling. The core of drilling equipment is the drill bit, so it is necessary to monitor the drilling status of the drill bit at any time. However, with the deepening of drilling, the drill bit will go deep into the formation, and it is difficult for the staff on the ground to directly observe the situation of the drill bit. Therefore, it is necessary to install various monitoring devices at the drill bit, such as direction sensors and temperature sensors. The data will be transmitted to the ground through the communication line, and the staff on the ground will receive and analyze it.

Because the underground environment is very harsh, it is difficult for the detection device to communicate with the ground through general communication lines, and it is also difficult to communicate with the ground through conventional wireless methods. At present, the communication between the surface and the downhole is generally achieved by using a pulse generator to control the flow of mud passing through the pipeline, and the detection data is obtained by the staff decoding the pulse signal generated by the pulse generator.

Although the structure of the existing pulse generator is simple, the structural design is unreasonable. The large-grained silt in the mud easily enters the inside of the pulse valve head, and the large-grained silt is difficult to discharge out of the pulse valve head, so that the pulse valve head Internal sediment deposits may easily cause blockage or jamming, which is not convenient for the use of the pulse generator.

Contents of the invention

The technical problem to be solved by the utility model is to provide an anti-clogging pulse generator that does not appear to be blocked or stuck.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An anti-clogging pulse generator, which includes a casing, the casing is provided with a liquid inlet hole and a liquid outlet hole communicated with the liquid inlet hole, and a pulse control device for closing or opening the liquid outlet hole is installed in the liquid outlet hole. The valve also includes a guide core valve installed in the shell, a pulse valve head for conducting or blocking the liquid inlet hole and a liquid outlet hole, a reset part for driving the pulse valve head to reset, and a valve installed on the guide core valve. The filter assembly at one end, the pulse valve head is slidably arranged on the guide core valve, one end of the filter assembly abuts against the end of the pulse valve head, and the filter assembly is provided with a first filter hole communicating with the liquid inlet hole, so The guide core valve is provided with a first guide hole communicated with the first filter hole and a bar-shaped hole communicated with the first guide hole, the pulse valve head and the guide core valve form a closed accommodating cavity, the The accommodating cavity communicates with the strip hole.

Further, the guide core valve is provided with a second diversion hole communicating with the strip hole.

Further, the guide core valve sleeve is provided with a valve sleeve, and the pulse valve head is provided with an accommodating groove, and one end of the valve sleeve is slidably arranged in the accommodating groove.

Further, the end of the pulse valve head close to the liquid inlet hole has a conical structure.

Further, the reset member is a spring, the spring is accommodated in the accommodating cavity, one end of the spring abuts against the guide core valve, and the other end of the spring abuts against the pulse valve head.

Further, the filter assembly includes a filter mandrel mounted on one end of the guide core valve and a filter sleeve fitted on the filter mandrel, the first filter hole is set on the filter mandrel, and the filter mandrel is provided with a The mandrel hole of the first filter hole and the first diversion hole, the filter sleeve is provided with a second filter hole communicated with the first filter hole and the liquid inlet hole respectively.

Further, the filter sleeve is provided with a plurality of filter blocks, filter slots are provided between adjacent filter blocks, and the second filter holes are provided in the filter blocks.

Further, the head of the filter sleeve has a conical structure.

Further, the strip-shaped hole has a width of 0.5 mm to 1 mm.

Beneficial effects of the utility model: a pulse generator is set in the mud conveying channel, and the pulse generator opens or blocks the mud conveying channel according to a certain rule. In practical application, it is not completely blocked, but usually narrows the flow channel. In actual use, the mud in the mud delivery channel enters the casing through the liquid inlet hole. When the pulse control valve is opened, the pulse valve head moves backward under the push of the flowing mud, so that the liquid inlet hole Connected with the liquid outlet hole, a part of the mud is directly discharged outside the pulse control valve through the liquid outlet hole, and the other part of the mud enters the filter assembly, the first filter hole of the filter assembly filters the mud, and the filtered mud enters the guide core valve Most of the mud in the guide core valve is discharged to the outside of the pulse control valve through the first diversion hole, and a small part of the mud enters the accommodation cavity through the strip hole, and the strip hole pair enters the accommodation cavity Secondary filtration of the mud to prevent large particles of sand from entering the accommodating cavity and preventing large particles of sand from blocking the strip holes; when the pulse control valve is closed, the pulse valve head moves backwards driven by the flowing mud, The liquid inlet hole of the casing is connected with the liquid outlet hole, a part of the mud enters the liquid outlet hole, and another part of the mud enters the filter assembly, the first filter hole of the filter assembly filters the mud, and the filtered mud enters the first filter hole of the guide core valve. In the first diversion hole, because the pulse control valve is closed, the mud in the outlet hole and the first diversion hole cannot be discharged outside the pulse control valve, so that the mud in the first diversion hole enters the accommodation chamber through the strip hole In the body, the strip holes filter the mud in the first diversion hole for a second time to prevent large particles of sand from entering the accommodation cavity and prevent the pulse valve head from being blocked by the deposition of large particles of sand. With the increase of mud, the pulse valve head moves forward and resets under the pressure of the accommodating cavity and the push of the reset member, so that the pulse valve head blocks the flow between the liquid inlet hole and the liquid outlet hole or reduces the flow between the liquid inlet hole and the liquid outlet hole area, so as to realize a pulse of the pulse generator; when the pulse control valve is opened again, the pulse valve head moves backward under the push of the flowing mud, and when the pulse valve head moves backward, the mud in the chamber is accommodated Enter the first diversion hole through the strip hole, and the mud is discharged out of the pulse control valve along the first diversion hole, and the liquid inlet hole and the liquid outlet hole are connected, and a part of the mud is directly discharged out of the pulse control valve through the liquid outlet hole. Outside, another part of the mud enters the filter assembly, the first filter hole of the filter assembly filters the mud, the filtered mud enters the first diversion hole of the pilot core valve, and the mud in the pilot core valve is discharged through the first diversion hole The outside of the pulse control valve; only by orderly controlling the opening or closing of the pulse control valve will make the pulse valve head conduct or block the liquid inlet and outlet holes in an orderly manner, and the pulse generator can generate orderly Pulse: The structure of this anti-clogging pulse generator is simple and reasonable in design, and it is convenient to use. While maintaining the function of the original pulse generator, the mud entering the accommodating cavity is filtered twice through the design of strip holes to avoid mud Medium and large particles of sand enter the storage chamber to prevent large particles of sand from being difficult to discharge out of the storage chamber and cause sediment to deposit in the storage chamber Inner or block the strip hole to ensure the normal operation of the pulse valve head and the reset part, and the pulse generator will not be blocked or stuck, thus ensuring the normal pulse generation of the pulse generator and prolonging the use of the pulse generator life.

Description of drawings

Fig. 1 is a sectional view of the utility model.

Fig. 2 is a three-dimensional structural schematic diagram of the guide core valve of the present invention.

Fig. 3 is a three-dimensional structural schematic diagram of the pulse valve head of the present invention.

Fig. 4 is a schematic diagram of an exploded three-dimensional structure of the filter assembly of the present invention.

Explanation of reference signs:

1. Shell; 11. Liquid inlet hole; 12. Liquid outlet hole; 2. Guide core valve; 21. First diversion hole;

22. Strip hole; 23. Second diversion hole; 3. Pulse valve head; 31. Accommodating tank; 4. Resetting part;

5. Filter assembly; 51. Filter mandrel; 511. First filter hole; 52. Filter sleeve;

521, mandrel hole; 522, second filter hole; 523, filter block; 524, filter tank;

6. Pulse control valve; 7. Valve sleeve; 8. Accommodating cavity.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model.

As shown in Figures 1 to 4, an anti-clogging pulse generator provided by the utility model includes a casing 1, and the casing 1 is provided with a liquid inlet hole 11 and a liquid outlet hole 12 communicated with the liquid inlet hole 11. , the liquid outlet hole 12 is equipped with a pulse control valve 6 for closing or opening the liquid outlet hole 12, and also includes a guide core valve 2 installed in the casing 1 for conducting or blocking the liquid inlet hole 11 and The pulse valve head 3 of the liquid outlet hole 12, the reset member 4 for driving the pulse valve head 3 to reset, and the filter assembly 5 installed at one end of the guide core valve 2, the pulse valve head 3 is slidably arranged on the guide core valve 2, One end of the filter assembly 5 abuts against one end of the pulse valve head 3, the filter assembly 5 is provided with a first filter hole 511 communicating with the liquid inlet 11, and the guide core valve 2 is provided with a first filter hole 511 communicated with the first filter hole. 511 communicated with the first guide hole 21 and the bar-shaped hole 22 communicated with the first guide hole 21, the pulse valve head 3 and the guide core valve 2 form a closed accommodating cavity 8, the accommodating cavity 8 communicates with the strip hole 22. Specifically, the strip-shaped hole 22 is provided with a plurality of strip-shaped holes 22 evenly distributed in the guide core valve 2; the width of the strip-shaped hole 22 is 0.5mm to 1mm, as preferably, the strip-shaped hole 22 has a width of 0.7 mm.

A pulse generator is set in the mud conveying channel, and the pulse generator opens or blocks the mud conveying channel according to certain rules. In practical applications, it is not completely blocked, but usually reduces the flow area of the channel; in actual use At this time, the mud in the mud delivery channel enters the shell 1 through the liquid inlet hole 11. When the pulse control valve 6 is opened, the pulse valve head 3 moves backward under the push of the flowing mud, so that the liquid inlet hole 11 and The liquid outlet hole 12 is connected, and a part of the mud is directly discharged from the outside of the pulse control valve 6 through the liquid outlet hole 12, and the other part of the mud enters the filter assembly 5, and the first filter hole 511 of the filter assembly 5 filters the mud. The mud enters the first diversion hole 21 of the pilot core valve 2, most of the mud in the pilot core valve 2 is discharged to the outside of the pulse control valve 6 through the first diversion hole 21, and a small part of the mud enters the accommodating chamber through the strip hole 22 In the body 8, the strip hole 22 performs secondary filtration on the mud entering the accommodation cavity 8, preventing large particles of silt from entering the accommodating cavity 8, and preventing large particles of silt from blocking the strip holes; when the pulse control When the valve 6 is closed, the pulse valve head 3 moves backward under the push of the flowing mud, the liquid inlet hole 11 of the shell 1 communicates with the liquid outlet hole 12, a part of the mud enters the liquid outlet hole 12, and the other part of the mud enters the filter Component 5, the first filter hole 511 of the filter component 5 filters the mud, and the filtered mud enters the first guide hole 21 of the guide core valve 2, and since the pulse control valve 6 is closed, the liquid outlet 12 and the first guide hole The mud in the orifice 21 cannot be discharged to the outside of the pulse control valve 6, so that the mud in the first diversion hole 21 enters the accommodation cavity 8 through the strip-shaped hole 22, and the strip-shaped hole 22 is opposite to the first diversion hole 21. The mud inside is filtered twice to prevent large particles of sand from entering the accommodation cavity 8, and prevent the deposition of large particles of sand from causing blockage of the pulse valve head 3. With the increase of mud in the accommodation cavity 8, the pulse valve The pressure of the head 3 in the accommodation cavity 8 rises and the reset member 4 pushes forward and resets, so that the pulse valve head 3 blocks the liquid inlet hole 11 and the liquid outlet hole 12 or narrows the liquid inlet hole 11 and the liquid outlet hole 12 of the flow area, thereby realizing a pulse of the pulse generator; when the pulse control valve 6 is opened again, the pulse valve head 3 moves backward under the push of the flowing mud, and the pulse valve head 3 moves backward at the same time , the mud in the accommodating cavity 8 enters the first diversion hole 21 through the strip hole 22, and the mud is discharged to the outside of the pulse control valve 6 along the first diversion hole 21, and the liquid inlet hole 11 and the liquid outlet hole 12 are guided One part of the mud is directly discharged from the outside of the pulse control valve 6 through the outlet hole 12, and the other part of the mud enters the filter assembly 5, and the first filter hole 511 of the filter assembly 5 filters the mud, and the filtered mud enters the pilot core valve 2, the mud in the guide core valve 2 is discharged to the outside of the pulse control valve 6 through the first guide hole 21; only by orderly controlling the opening or closing of the pulse control valve 6 will the pulse valve The head 3 conducts or blocks the liquid inlet hole 11 and the liquid outlet hole 12 in an orderly manner, and the pulse generator can generate orderly pulses; the anti-clogging pulse generation The structure of the device is simple, the design is reasonable, and the use is convenient. While maintaining the function of the original pulse generator, the mud entering the accommodation cavity 8 is filtered through the design of the strip hole 22 to avoid large particles of mud in the mud. Sand enters the accommodation cavity 8 to prevent large particles of silt from being difficult to discharge out of the accommodating cavity 8 and cause sediment to deposit in the accommodating cavity 8 or block the strip hole 22, ensuring the pulse valve head 3 and reset Component 4 can work normally, and the pulse generator will not be blocked or stuck, thereby ensuring the normal pulse generation of the pulse generator and prolonging the service life of the pulse generator.

In this embodiment, the guide core valve 2 is provided with a second diversion hole 23 communicating with the bar-shaped hole 22, and the second diversion hole 23 is provided with a plurality, and the plurality of second diversion holes 23 are evenly distributed. Around the first diversion hole 21, and a strip hole 22 is connected to a second diversion hole 23; when the pulse control valve 6 is opened, a part of the mud in the accommodation cavity 8 enters through the strip hole 22 The second diversion hole 23, the mud is discharged to the outside of the pulse control valve 6 along the second diversion hole 23, which facilitates the discharge of mud to the outside of the pulse control valve 6, accelerates the speed of the mud flow channel, and reduces the deposition of sediment.

In this embodiment, the guide core valve 2 is set with a valve sleeve 7, the pulse valve head 3 is provided with an accommodation groove 31, and one end of the valve sleeve 7 is slidably arranged in the accommodation groove 31, the guide valve core, The pulse valve head 3 and the valve sleeve 7 form an accommodating cavity 8; the valve sleeve 7 and the pulse valve head 3 are slidably connected to facilitate the movement of the pulse valve head 3 and avoid direct contact between the pulse valve head 3 and the guide core valve 2. The wear of the pulse valve head 3 and the guide core valve 2 is reduced, and the service life of the pulse valve head 3 and the guide core valve 2 is prolonged.

In this embodiment, the end of the pulse valve head 3 close to the liquid inlet hole 11 has a conical structure, and the conical pulse valve head 3 plays a role in guiding the flow of mud, so that the mud flows along the direction of the pulse valve head 3. The flow on the outer surface accelerates the flow speed of the mud, and facilitates the movement of the pulse valve head 3 driven by the mud, so that the pulse valve head 3 conducts or blocks the liquid inlet hole 11 and the liquid outlet hole 12 .

In this embodiment, the reset member 4 is a spring, and the spring is accommodated in the accommodating cavity 8, one end of the spring abuts against the guide core valve 2, and the other end of the spring abuts against the pulse valve head 3 The structure of the spring is simple, the cost is low, the reusability is good, and the sensitivity is good. When the pulse valve head 3 moves backward, the spring plays a role in buffering the pulse valve head 3; Under the action of its own elasticity, it is convenient for the pulse valve head 3 to move and reset.

In this embodiment, the filter assembly 5 includes a filter core shaft 51 mounted on one end of the guide core valve 2 and a filter sleeve 52 fitted on the filter core shaft 51, the first filter hole 511 is disposed on the filter core shaft 51, The filter mandrel 51 is provided with a mandrel hole 521 for communicating with the first filter hole 511 and the first diversion hole 21, and the filter sleeve 52 is provided with a first filter hole 511 communicated with the liquid inlet hole 11 respectively. Two filter holes 522; when the mud enters the filter assembly 5, first the mud enters the filter cover 52 through the second filter hole 522 of the filter cover 52, and the second filter hole 522 filters the mud for the first time. The mud enters the filter mandrel 51 through the first filter hole 511, and the first filter hole 511 filters the mud for the second time, and the mud filtered for the second time enters the first diversion hole of the guide core valve 2 through the mandrel hole 521 21, during this process, the filter assembly 5 filters the mud twice, and filters the large-grained sand to prevent the large-grained sand from entering the guide core valve 2 and the accommodating cavity 8, preventing the pulse generator from There is a phenomenon of clogging or jamming.

In this embodiment, the filter sleeve 52 has a claw-shaped structure, and the filter sleeve 52 is provided with a plurality of filter blocks 523, and filter grooves 524 are provided between adjacent filter blocks 523, and the second filter holes 522 are provided with Based on the filter block 523; the mud is initially filtered through the filter tank 524 and the second filter hole 522, and the flow rate of the mud is ensured while filtering the large particle sand.

In this embodiment, the head of the filter sleeve 52 has a conical structure, and the filter sleeve 52 with a conical head plays a role in guiding the flow of mud, so that the mud flows along the outer surface of the filter sleeve 52. , speed up the flow of mud.

All technical features in this embodiment can be freely combined according to actual needs.

The above-mentioned embodiment is a preferred implementation of the utility model. In addition, the utility model can also be realized in other ways. Any obvious replacement is within the scope of protection of the utility model without departing from the concept of the technical solution. Inside.

Claims (9)

1. a kind of anticlogging impulse generator, including shell (1), the shell (1) is provided with inlet opening (11) and and feed liquor The fluid hole (12) of hole (11) connection, the interior pulse control being equiped with for closing or opening fluid hole (12) of the fluid hole (12) Valve (6) processed, it is characterised in that：Further include be installed in shell (1) guiding core valve (2), for turning on or blocking inlet opening (11) return unit (4) that is resetted with the pulse valve head (3) of fluid hole (12), for driving pulse valve head (3) and it is installed in guiding The filter assemblies (5) of core valve (2) one end, the pulse valve head (3), which is slideably positioned in, is oriented to core valve (2), the filter assemblies (5) One end be connected to one end of pulse valve head (3), the filter assemblies (5) are provided with the first filtering connected with inlet opening (11) Hole (511), the guiding core valve (2) are provided with the first deflector hole (21) connected with the first filter hole (511) and are led with first The bar hole (22) of discharge orifice (21) connection, the pulse valve head (3) form the accommodating cavity (8) of closing, institute with being oriented to core valve (2) Accommodating cavity (8) is stated to connect with bar hole (22).

A kind of 2. anticlogging impulse generator according to claim 1, it is characterised in that：The guiding core valve (2) sets It is equipped with the second deflector hole (23) connected with bar hole (22).

A kind of 3. anticlogging impulse generator according to claim 1, it is characterised in that：Guiding core valve (2) set Equipped with valve pocket (7), the pulse valve head (3) is provided with storage tank (31), and one end of the valve pocket (7) is slideably positioned in storage tank (31) in.

A kind of 4. anticlogging impulse generator according to claim 1, it is characterised in that：The pulse valve head (3) is leaned on One end of nearly inlet opening (11) is in cone-shaped structure.

A kind of 5. anticlogging impulse generator according to claim 1, it is characterised in that：The return unit (4) is bullet Spring, the spring are located in accommodating cavity (8), and one end of the spring, which is connected to, is oriented to core valve (2), and the other end of spring supports It is connected to pulse valve head (3).

A kind of 6. anticlogging impulse generator according to claim 1, it is characterised in that：Filter assemblies (5) bag Include the filter sheath (52) for being installed in the filtering mandrel (51) for being oriented to core valve (2) one end and being set in filtering mandrel (51), described the One filter hole (511) is arranged at filtering mandrel (51), and the filtering mandrel (51) is provided with for connecting the first filter hole (511) With the core axle hole (521) of the first deflector hole (21), the filter sheath (52) be provided with respectively with the first filter hole (511) and feed liquor The second filter hole (522) of hole (11) connection.

A kind of 7. anticlogging impulse generator according to claim 6, it is characterised in that：The filter sheath (52) is set There are multiple filter blocks (523), lautertuns (524), second filter hole (522) are provided between adjacent filter block (523) It is arranged at filter block (523).

A kind of 8. anticlogging impulse generator according to claim 6, it is characterised in that：The head of the filter sheath (52) Portion is in cone-shaped structure.

A kind of 9. anticlogging impulse generator according to claim 1, it is characterised in that：The width of the bar hole (22) Spend for 0.5mm to 1mm.