CN219263173U

CN219263173U - Slurry pump packing sealing structure for petroleum drilling

Info

Publication number: CN219263173U
Application number: CN202320202082.2U
Authority: CN
Inventors: 张俊良
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-06-27
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses a slurry pump packing sealing structure for petroleum drilling, which comprises a medium rod, wherein an installation shell is movably sleeved outside the medium rod, a sealing box is arranged inside the installation shell, the sealing box is movably sleeved outside the medium rod, a cavity channel is arranged inside the sealing box, an air pipe communicated with the cavity channel is arranged at the top of the sealing box, a sealing plate is arranged at the top of the installation shell, and an air supplementing component for supplementing air into the cavity channel is arranged at the top of the sealing plate. The utility model can realize the automatic adjustment of the sealing box, so that the sealing box can be always in a close fit state with the medium rod, further the sealing box can be better used, and the sealing box is convenient to replace, thereby meeting the use requirement.

Description

Slurry pump packing sealing structure for petroleum drilling

Technical Field

The utility model belongs to the technical field of sealing elements, and particularly relates to a slurry pump packing sealing structure for petroleum drilling.

Background

The slurry pump is extremely important and indispensable drilling equipment in drilling production, and in the operation process of the slurry pump, as the frequency of reciprocating operation of a slurry pump medium rod for petroleum drilling is very high, abrasion and temperature rise can bring a plurality of challenges to the design of a packing box sealing structure; the packing seal is a dynamic seal device which generates a pressing force between packing and a rotating piece and a fixed piece through the self-tightening action of pre-tightening or medium pressure, is also called as 'packing box seal', has more structural forms and mainly consists of packing, a packing box and a packing fixed piece.

When the existing sealing box is used, the sealing box can be continuously rubbed with the sealing box due to the reciprocating motion of the medium rod, so that the contact surface of the sealing box and the medium rod is worn for a long time, a gap exists between the sealing box and the medium rod, and the sealing performance is affected.

Therefore, it is necessary to invent a packing structure of a slurry pump for oil drilling to solve the above problems.

Disclosure of Invention

The utility model provides a packing sealing structure of a slurry pump for petroleum drilling, aiming at solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a slurry pump packing seal structure for oil drilling, includes the pole that mediates, the outside movable sleeve of mediating the pole is equipped with the installation shell, the inside seal letter that is equipped with of installation shell, seal letter movable sleeve is established in the outside of mediating the pole, the inside of seal letter is equipped with the chamber way, the top of seal letter is equipped with the trachea with chamber way intercommunication, the top of installation shell is provided with the closure plate, the top of closure plate is equipped with the air feed subassembly to the intracavity air feed.

Further, the air supplementing assembly comprises a cylinder body fixedly connected to the top of the sealing plate, the cylinder body is correspondingly arranged with the air pipe, an air inlet and a hose are respectively arranged on one side, close to the medium rod, of the cylinder body, the hose is communicated with the inside of the cylinder body, one check valve is arranged in the hose and the air inlet, an opening corresponding to the air pipe is formed in the top of the sealing plate, one end, away from the cylinder body, of the hose is fixedly connected with a connecting pipe communicated with the hose, threads of the connecting pipe are connected to the inside of the air pipe, a piston is arranged in the cylinder body, and an extrusion assembly used for extruding the piston to enable the piston to move is arranged on the top of the sealing plate.

Further, extrusion subassembly includes fixed connection at the piston and keeps away from the connecting rod of medium pole one side, the connecting rod is kept away from the one end of medium pole and is extended to cylinder body external fixation and is connected with the drive block, the piston is close to one side of medium pole and is equipped with the spring, the top of closure board rotates and installs the annular plate, the inboard of annular plate is equipped with the drive plate with drive block complex, the outside cover of annular plate is equipped with the torsional spring, the both ends of torsional spring respectively with annular plate and closure plate fixed connection.

Further, the driving block is specifically a plate-shaped member with an arc surface arranged at one side far away from the medium rod.

Further, the driving plate is fixedly arranged on the inner side of the annular plate, and one side, close to the medium rod, of the driving plate is provided with an arc surface.

Further, the top of the annular plate is symmetrically provided with rotating handles.

Further, a thread groove is formed in the top of the mounting shell, and the bottom of the sealing plate is connected in the thread groove in a threaded mode.

The utility model has the technical effects and advantages that:

1. the utility model can realize the automatic adjustment of the sealing box, so that the sealing box can be always in a close fit state with the medium rod, and the sealing box can be better used;

2. the utility model is convenient for replacing the sealing box and meets the use requirement.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a packing seal structure of a slurry pump for oil drilling of the present utility model;

FIG. 2 is a schematic cross-sectional structural view of the packing seal structure of the slurry pump for oil drilling of the present utility model;

in the figure: 1. a dielectric rod; 2. a mounting shell; 3. a sealing box; 4. a cavity channel; 5. an air pipe; 6. a closing plate; 7. a cylinder; 8. a hose; 9. a connecting pipe; 10. a piston; 11. a driving block; 12. a ring plate; 13. a driving plate; 14. a torsion spring; 15. a rotating handle.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a slurry pump packing sealing structure for petroleum drilling, as shown in fig. 1-2, which comprises a medium rod 1, wherein an installation shell 2 is movably sleeved outside the medium rod 1, a sealing box 3 is arranged inside the installation shell 2, the sealing box 3 is made of rubber, the sealing box 3 is movably sleeved outside the medium rod 1, a cavity 4 is arranged inside the sealing box 3, an air pipe 5 communicated with the cavity 4 is arranged at the top of the sealing box 3, a sealing plate 6 is arranged at the top of the installation shell 2, an air supplementing component for supplementing air into the cavity 4 is arranged at the top of the sealing plate 6, during use, the installation shell 2 can be fixedly connected with an installation position, the sealing box 3 can be limited by the sealing plate 6, so that the sealing box 3 cannot move, the air supplementing component supplements air into the cavity 4, and accordingly the cavity 4 is inflated, one face, which is in contact with the medium rod 1, is extruded towards the direction of the medium rod 1, the sealing box 3 is more bonded with the medium rod 1, the sealing box 3 is more tightly, the sealing box 3 is more bonded with the cavity 1 along with the reciprocating motion of the medium rod 1, the sealing box 3 is not broken, the sealing box 3 is in contact with the cavity 1 for a long time, and the sealing box 3 can be more tightly regulated, and the sealing box 3 can be more tightly contacted with the medium rod 1, and the sealing box 3 can be more tightly inflated with the cavity 4, and the sealing box 3 is in the cavity 4 is more tightly contacted with the cavity 4 through the sealing box.

As shown in fig. 2, the air supplementing component comprises a cylinder body 7 fixedly connected to the top of a sealing plate 6, the cylinder body 7 is correspondingly arranged with an air pipe 5, one side of the cylinder body 7, which is close to the medium rod 1, is respectively provided with an air inlet and a hose 8, the hose 8 is communicated with the inside of the cylinder body 7, the inside of the air inlet is provided with a one-way valve, the top of the sealing plate 6 is provided with an opening corresponding to the air pipe 5, one end of the hose 8, which is far away from the cylinder body 7, is fixedly connected with a connecting pipe 9 communicated with the hose 9, the inside of the air pipe 5 is provided with a piston 10, the top of the sealing plate 6 is provided with an extrusion component for extruding the piston 10 to move, the piston 10 can be extruded by the extrusion component to move towards the direction close to the medium rod 1, so that air in the cylinder body 7 is extruded outwards, at the moment, the one-way valve in the air inlet is opened by the hose 8, the one-way valve in the air inlet is closed, the air inlet is inflated by the hose 8, the air pipe 9 and the air pipe 5, the one-way valve in the sealing component is driven to reset by the extrusion component, the one side of the sealing component is closed, the one side of the sealing rod 1 is opened by the sealing rod is closed by the sealing rod 1, and the sealing rod is contacted with the sealing rod 1 when the sealing rod 1, and the sealing rod is worn out by the sealing rod 1.

As shown in fig. 1-2, the extrusion assembly comprises a connecting rod fixedly connected to one side of the piston 10 away from the intermediate rod 1, one end of the connecting rod away from the intermediate rod 1 extends to the outside of the cylinder 7 and is fixedly connected with a driving block 11, a spring is arranged on one side of the piston 10 close to the intermediate rod 1, a ring plate 12 is rotatably arranged at the top of the sealing plate 6, a driving plate 13 matched with the driving block 11 is arranged on the inner side of the ring plate 12, a torsion spring 14 is sleeved outside the ring plate 12, two ends of the torsion spring 14 are fixedly connected with the ring plate 12 and the sealing plate 6 respectively, the ring plate 12 is positively rotated to deform the torsion spring 14, meanwhile, the ring plate 12 drives the driving plate 13 to move along with the driving block 11 to extrude the driving plate to drive the connecting rod and the piston 10 to move towards the direction close to the intermediate rod 1, the piston 10 compresses the spring to deform to generate acting force, and when the driving plate 13 leaves the driving block 11, and the deformed spring releases the acting force to drive the piston 10, the connecting rod and the driving block 11 to reset at the moment, and driving of the piston 10 is further realized.

As shown in fig. 2, the driving block 11 is a plate-shaped member with an arc surface at one side far away from the intermediate rod 1, when the driving plate 13 contacts with the driving block 11, the driving block 11 is extruded along the arc surface to drive the connecting rod and the piston 10 to move along the direction close to the intermediate rod 1, meanwhile, the piston 10 compresses the spring to deform the spring to generate an acting force, when the driving plate 13 moves to the middle of the arc surface of the driving block 11, the driving plate 13 moves continuously along with the driving plate 13, so that the driving block 11 is gradually separated, and the deformed spring continuously releases the acting force to drive the piston 10, the connecting rod and the driving block 11 to reset.

As shown in fig. 2, the driving plate 13 is fixedly installed on the inner side of the ring plate 12, one side of the driving plate 13, which is close to the intermediate rod 1, is provided with an arc surface, and the arc surface of the driving plate 13 and the arc surface of the driving block 11 can be better contacted through the arrangement of the arc surface.

As shown in fig. 1, the top of the ring plate 12 is symmetrically provided with a turning handle 15, and the turning of the ring plate 12 can be facilitated by the turning handle 15.

As shown in fig. 2, a screw thread groove is formed in the top of the installation shell 2, the bottom of the sealing plate 6 is in screw thread connection with the screw thread groove, when the sealing box 3 is replaced, the intermediate rod 1 is detached, the connecting pipe 9 is reversed to be separated from the air pipe 5, and after the connecting pipe 9 is separated from the air pipe 5, the sealing plate 6 can be reversed to be separated from the installation shell 2, so that the sealing box 3 can be taken out for replacement.

Working principle: during the use, can be with installation shell 2 and installation department fixed connection, can restrict sealed letter 3 through closing plate 6, make it unable to move, forward rotation annular plate 12 makes torsional spring 14 appear deformation, simultaneously annular plate 12 drives drive plate 13 and moves along with it and contradicts and extrude it with drive piece 11, make it drive connecting rod, piston 10 moves towards the direction that is close to medium rod 1, piston 10 compresses the spring and makes its deformation produce effort, make the air in the cylinder body 7 outwards crowded, the check valve that is located hose 8 this moment, check valve closure that is located in the air inlet, make the air pass through hose 8, connecting pipe 9, in the air pipe 5 gets into chamber 4, realize aerifing it, as the rotation of drive plate 13, in the cambered surface department of driving piece 11 is followed to it, follow the continued motion of drive plate 13, make gradually leave drive piece 11, the continuous release effort of spring of deformation drives piston 10, connecting rod and drive piece 11 reset, make the check valve that is located the air inlet, make the outside air pass through the air inlet and outwards crowded, the check valve that is located in the cylinder body 7, at this moment, the check valve is opened in the air inlet, make the air inlet is continuous with the expansion plate 7 is carried out and be continuous, can make the expansion plate 1 is continuous with the expansion channel 4 is carried out to the expansion channel 4 is continuously to the expansion channel is carried out to the expansion, can be carried out to the expansion channel 1 is continuously to the expansion channel is made to the expansion channel is continuously to the expansion channel is 4, can's 1 is continuously is made to the expansion to the face 1 to the expansion channel is can't is continuously to the end 1 to the face can is made to the expansion channel is continuously is made to the expansion to the face 1 to the face is can is made to be had, can is continuously can is made to be had, connecting rod, driving piece 11 unable motion, make driving plate 13 unable motion, this moment driving plate 13 is contradicted with one side of driving piece 11, along with the reciprocating motion of mediating rod 1, make the seal letter 3 rather than continuous friction, in the past, the seal letter 3 can be worn and thinned with the one side of mediating rod 1 contact, make there is the clearance between seal letter 3 and mediating rod 1, make chamber 4 have expansion space again, the torsional spring 14 of deformation continues release effort drive annular plate 12 this moment, driving plate 13 motion, make cooperation cambered surface extrusion driving piece 11 make it move to the direction that is close to mediating rod 1, same reason has injected air into chamber 4 again and has made its inflation, thereby make seal letter 3 can closely laminate with mediating rod 1 again, make it can be in closely laminating state all the time with mediating rod 1, and then make seal letter 3 can better use, when need change seal letter 3, with mediating rod 1, reverse 9 make it separate with trachea 5, with connecting pipe 9 and trachea 5 separation, can make its installation 2 separate with reverse rotation of sealing letter 3, make it install 2 and install 2, make it install 2 and replace the sealing letter 3, make it take out the whole process and install 2, and replace the sealing letter 2.

Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a slurry pump packing seal structure for oil drilling, includes intermediate lever (1), its characterized in that: the outside movable sleeve that is mediated pole (1) is equipped with installation shell (2), the inside sealed letter (3) that is equipped with of installation shell (2), sealed letter (3) movable sleeve is established in the outside of mediating pole (1), the inside of sealed letter (3) is equipped with chamber way (4), the top of sealed letter (3) is equipped with tracheal (5) with chamber way (4) intercommunication, the top of installation shell (2) is provided with closure plate (6), the top of closure plate (6) is equipped with the air supplement subassembly to the air supplement in chamber way (4).

2. The slurry pump packing seal structure for petroleum drilling according to claim 1, wherein: the air supplementing assembly comprises a cylinder body (7) fixedly connected to the top of a sealing plate (6), the cylinder body (7) is correspondingly arranged with an air pipe (5), one side of the cylinder body (7) close to a medium rod (1) is respectively provided with an air inlet and a hose (8), the hose (8) is communicated with the inside of the cylinder body (7), one-way valves are arranged in the hose (8) and the air inlet, an opening corresponding to the air pipe (5) is formed in the top of the sealing plate (6), one end of the hose (8) away from the cylinder body (7) is fixedly connected with a connecting pipe (9) communicated with the hose, the connecting pipe (9) is in threaded connection with the inside of the air pipe (5), a piston (10) is arranged in the inside of the cylinder body (7), and the top of the sealing plate (6) is provided with an extrusion assembly used for extruding the piston (10) to enable the piston to move.

3. The slurry pump packing seal structure for petroleum drilling according to claim 2, wherein: the extrusion assembly comprises a connecting rod fixedly connected to one side of a piston (10) far away from a medium rod (1), one end of the connecting rod far away from the medium rod (1) extends to a cylinder body (7) and is fixedly connected with a driving block (11), one side of the piston (10) close to the medium rod (1) is provided with a spring, the top of a sealing plate (6) is rotatably provided with a ring plate (12), the inner side of the ring plate (12) is provided with a driving plate (13) matched with the driving block (11), a torsion spring (14) is sleeved outside the ring plate (12), and two ends of the torsion spring (14) are fixedly connected with the ring plate (12) and the sealing plate (6) respectively.

4. A mud pump packing seal for oil drilling according to claim 3, wherein: the driving block (11) is specifically a plate-shaped member with an arc surface arranged at one side far away from the medium rod (1).

5. A mud pump packing seal for oil drilling according to claim 3, wherein: the driving plate (13) is fixedly arranged on the inner side of the annular plate (12), and one side, close to the intermediate rod (1), of the driving plate (13) is provided with an arc surface.

6. A mud pump packing seal for oil drilling according to claim 3, wherein: the top of the annular plate (12) is symmetrically provided with a rotating handle (15).

7. The slurry pump packing seal structure for petroleum drilling according to claim 1, wherein: the top of the installation shell (2) is provided with a thread groove, and the bottom of the sealing plate (6) is in threaded connection with the thread groove.