CN111963096A

CN111963096A - Oil field pumping unit import sealing device

Info

Publication number: CN111963096A
Application number: CN202010893502.7A
Authority: CN
Inventors: 张利东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-20
Anticipated expiration: 2040-08-31
Also published as: CN111963096B

Abstract

The invention relates to the technical field of oil pumping units in oil fields, in particular to an inlet sealing device of an oil pumping unit in an oil field, which comprises a shell and a gland, wherein the outer side of the top end of the shell is spirally connected with the gland, the inner side of the top end of the gland is fixedly connected with a press ring, communication holes are formed in the inner side of the periphery of the press ring, the inner side of the shell is spirally connected with a material taking device, and the material taking device comprises a first rotary drum, a second rotary drum, a first sealing ring, a second sealing ring, a conducting hole and an operating hole. The tightness of the newly placed spiral packing can not be influenced.

Description

Oil field pumping unit import sealing device

Technical Field

The invention relates to the technical field of oil field pumping units, in particular to an inlet sealing device of an oil field pumping unit.

Background

The pumping unit is a mechanical device for exploiting petroleum, commonly called a 'head knocking machine', the petroleum is discharged out of a well by a pressurizing method, when the pumping unit strokes upwards, an oil pipe elastically contracts and moves upwards to drive a mechanical unblocking oil extraction device to move upwards, and a sliding sleeve is impacted to generate vibration; meanwhile, the forward check valve is closed, when the variable diameter piston assembly blocks oil, when the pumping unit strokes downwards, the oil pipe elastically extends and moves downwards to drive the mechanical block removal oil extraction device to move downwards, and the mechanical block removal oil extraction device impacts the sliding sleeve to generate vibration; meanwhile, the reverse check valve is partially closed, the reducing piston assembly still blocks the annular oil passage of the oil sleeve, a high-pressure area is formed in the area below the reverse check valve, the movement generates reverse impact force on an oil flow channel in the stratum, and the inlet of the oil pumping unit needs to be sealed through a sealing packing box.

Present oil field oil production factory beam-pumping unit packing box is at long-time oil pumping production and wearing and tearing in-process, can follow the spiral packing of packing box inboard and drop there is the piece, the piece can produce the friction to the polished rod, the time has been of a specified duration and can make polished rod surface no longer smooth, make the lubricated effect variation of polished rod, thereby arouse polished rod surface temperature to rise easily, and general packing box is not convenient for take out the residue of packing box bottom when changing spiral packing, if the residue takes out not thoroughly, it is also not very good to change the sealed effect behind the spiral packing, consequently, propose an oil field beam-pumping unit import sealing device to above-mentioned problem.

Disclosure of Invention

The invention aims to provide an inlet sealing device of an oil pumping unit in an oil field, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an oil field beam-pumping unit import sealing device, includes casing and gland, the top outside screwed connection of casing has the gland, the inboard fixedly connected with clamping ring in top of gland, the intercommunicating pore has been seted up to the inboard all around of clamping ring, the inboard screwed connection of casing has extracting device, extracting device's inboard is provided with the spiral packing, the bottom fixedly connected with connecting cylinder of casing, the right-hand member fixedly connected with chip removal device of casing, the inboard sliding connection of spiral packing has the polished rod, and the polished rod runs through gland and connecting cylinder, extracting device includes first rotary drum, second rotary drum, first sealing ring, second sealing ring, conducting hole and handle hole, the inboard screwed connection of casing has first rotary drum, the inboard fixedly connected with second sealing ring in top of first rotary drum, and first rotary drum passes through second sealing ring and casing block, the conducting hole is formed in the inner side of the periphery of the first rotary drum, the bottom outer side of the first rotary drum is spirally connected with a second rotary drum, the second rotary drum is spirally connected with the shell, the bottom inner side of the second rotary drum is fixedly connected with a first sealing ring, the second rotary drum is hermetically connected with the shell through the first sealing ring, the chip removal device comprises a fixed drum, an oil pump, a first connecting pipe, a second connecting pipe, a third sealing ring, a sealing disc, a containing drum, a first filter screen and a second filter screen, the right end of the shell is fixedly connected with the fixed drum, the top end of the fixed drum is fixedly connected with the oil pump, the inlet end of the oil pump is communicated with the first connecting pipe, the first connecting pipe is communicated with the conducting hole on the right side, the containing drum is spirally connected with the inner side of the bottom of the fixed drum, the bottom inboard intercommunication of containing cylinder has the second connecting pipe, and the other end and the connecting cylinder intercommunication of second connecting pipe, the inboard fixedly connected with second filter screen of connecting cylinder, the left end inboard intercommunication of connecting cylinder has the third connecting pipe, and the third connecting pipe with be located the left the conducting hole intercommunication.

Preferably, the inner sides of the left end and the right end of the first rotating drum are provided with operation holes.

Preferably, the direction of the helix of the first drum and the housing is opposite to the direction of the helix of the first drum and the second drum.

Preferably, the outside fixedly connected with sealed dish of containing cylinder, the inboard fixedly connected with third sealing ring in top of sealed dish, and sealed dish passes through third sealing ring and solid fixed cylinder sealing connection.

Preferably, the first sealing ring, the second sealing ring and the third sealing ring are all made of rubber rings.

Preferably, the joints between the second connecting pipe and the connecting cylinder and the joints between the third connecting pipe and the connecting cylinder are both positioned at the upper side of the second filter screen.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the first rotary drum, the second rotary drum, the first sealing ring, the second sealing ring, the through hole and the operation hole, the spiral packing can be taken out from the inner side of the shell through the first rotary drum and the second rotary drum, and then the first rotary drum is separated from the second rotary drum, so that the complete cleaning of the scraps on the inner sides of the first rotary drum and the second rotary drum can be realized, the inner sides of the first rotary drum and the second rotary drum are ensured not to have residual scraps, and the sealing property of the newly placed spiral packing can not be influenced.

2. According to the invention, through the connecting cylinder, the oil pump, the third sealing ring, the sealing disc, the storage cylinder, the first filter screen and the second filter screen, oil liquid is arranged on the upper sides of the connecting cylinder and the spiral packing during normal work, debris is left in the oil liquid during the up-and-down movement of the polish rod, then the oil liquid can be driven by the oil pump to circularly flow with the debris, and the debris can stay on the inner side of the first filter screen after flowing through the storage cylinder, so that the debris cannot be left in the oil liquid on the upper sides of the connecting pipe and the spiral packing, the friction force generated by the polish rod and the spiral packing during up-and-down movement is reduced, and meanwhile, the debris in the first filter screen can be intensively.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at point A according to the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 at B according to the present invention;

fig. 4 is an enlarged view illustrating an installation structure of the fixing cylinder according to the present invention.

In the figure: 1-material taking device, 101-first rotating cylinder, 102-second rotating cylinder, 103-first sealing ring, 104-second sealing ring, 105-conducting hole, 106-operation hole, 2-chip removal device, 201-fixed cylinder, 202-oil pump, 203-first connecting pipe, 204-second connecting pipe, 205-third connecting pipe, 206-third sealing ring, 207-sealing disc, 208-containing cylinder, 209-first filter screen, 210-second filter screen, 3-gland, 4-polish rod, 5-press ring, 6-communication hole, 7-shell, 8-spiral packing and 9-connecting cylinder.

Detailed Description

Referring to fig. 1-4, the present invention provides a technical solution:

an inlet sealing device of an oil pumping unit in an oil field comprises a shell 7 and a gland 3, wherein the gland 3 is spirally connected to the outer side of the top end of the shell 7, the inner side of the top end of the gland 3 is fixedly connected with a pressing ring 5, the inner side of the periphery of the pressing ring 5 is provided with a communicating hole 6, the inner side of the shell 7 is spirally connected with a material taking device 1, the inner side of the material taking device 1 is provided with a spiral packing 8, the bottom end of the shell 7 is fixedly connected with a connecting cylinder 9, the right end of the shell 7 is fixedly connected with a chip removal device 2, the inner side of the spiral packing 8 is slidably connected with a polished rod 4, the polished rod 4 penetrates through the gland 3 and the connecting cylinder 9, the material taking device 1 comprises a first rotary cylinder 101, a second rotary cylinder 102, a first sealing ring 103, a second sealing ring 104, a communicating hole 105 and an operation hole 106, the inner side of the shell 7, the through hole 105 is formed in the inner side of the periphery of the first rotary drum 101, the second rotary drum 102 is spirally connected to the outer side of the bottom end of the first rotary drum 101, the second rotary drum 102 is spirally connected with the shell 7, the first sealing ring 103 is fixedly connected to the inner side of the bottom end of the second rotary drum 102, the second rotary drum 102 is hermetically connected with the shell 7 through the first sealing ring 103, the chip removal device 2 comprises a fixed cylinder 201, an oil pump 202, a first connecting pipe 203, a second connecting pipe 204, a third connecting pipe 205, a third sealing ring 206, a sealing disc 207, a containing cylinder 208, a first filter screen 209 and a second filter screen 210, the fixed cylinder 201 is fixedly connected to the right end of the shell 7, the oil pump 202 is fixedly connected to the top end of the fixed cylinder 201, the first connecting pipe 203 is communicated with the inlet end of the oil pump 202, the first connecting pipe 203 is communicated with the through hole 105 located on the right side, the containing, the first filter screen 209 is fixedly connected to the inner side of the storage barrel 208, the second connecting pipe 204 is communicated with the inner side of the bottom end of the storage barrel 208, the other end of the second connecting pipe 204 is communicated with the connecting barrel 9, the second filter screen 210 is fixedly connected to the inner side of the connecting barrel 9, the third connecting pipe 205 is communicated with the inner side of the left end of the connecting barrel 9, and the third connecting pipe 205 is communicated with the via hole 105 located on the left side.

The inner sides of the left end and the right end of the first rotary drum 101 are respectively provided with an operation hole 106, the rotation of the first rotary drum 101 is facilitated through the operation holes 106, the spiral direction of the first rotary drum 101 and the shell 7 is opposite to the spiral direction of the first rotary drum 101 and the second rotary drum 102, the spiral direction between the first rotary drum 101 and the second rotary drum 102 is opposite to the spiral direction before the first rotary drum 101 and the second rotary drum 102 and the shell 7, when the first rotary drum 101 rotates spirally on the inner side of the shell 7, the first rotary drum 101 cannot rotate spirally before the second rotary drum 102, the first rotary drum 101 and the second rotary drum 102 can be guaranteed to take out the spiral packing 8 from the inner side of the shell 7 smoothly, the outer side of the containing drum 208 is fixedly connected with a sealing disc 207, the inner side of the top end of the sealing disc 207 is fixedly connected with a third sealing ring 206, the sealing disc 207 is connected with the fixed drum 201 in a sealing manner, The second sealing ring 104 and the third sealing ring 206 are both made of rubber rings, the sealing performance between the first drum 101 and the housing 7 and between the second drum 7 and the housing 7 can be realized by the first sealing ring 103 and the second sealing ring 104, respectively, the joints between the second connecting pipe 204 and the third connecting pipe 205 and the connecting cylinder 9 are both positioned on the upper side of the second filter screen 210, and the blocking of the debris can be realized by the second filter screen 210.

The working process is as follows: before the packing box is used, power is supplied by an external power supply, when the spiral packing 8 needs to be taken out and replaced, a worker firstly rotates the gland 3 to separate the gland 3 from the shell 7, then the worker rotates the first rotary drum 101 anticlockwise through the external wrench, the worker inserts the external wrench into the inner side of the operation hole 106, then rotates the first rotary drum 101 anticlockwise, meanwhile, the first rotary drum 101 drives the second rotary drum 102 to rotate spirally on the inner side of the shell 7, and because the spiral direction between the first rotary drum 101 and the second rotary drum 102 is opposite to the spiral direction between the first rotary drum 101 and the second rotary drum 102 before the first rotary drum 101 and the second rotary drum 102 and the shell 7, when the first rotary drum 101 rotates spirally on the inner side of the shell 7, the first rotary drum 101 cannot rotate spirally before the second rotary drum 102, so that the first rotary drum 101 and the second rotary drum 102 can be taken out from the inner side of the shell 7 smoothly with the spiral packing, then the worker rotates the second rotating barrel 102 clockwise to make the second rotating barrel 102 and the first rotating barrel 101 rotate relatively spirally until the second rotating barrel 102 is separated from the first rotating barrel 101, then the worker can take out the spiral packing 8 from the inner sides of the first rotating barrel 101 and the second rotating barrel 102, and after the first rotating barrel 101 is separated from the second rotating barrel 102, the residual scraps inside the first rotating barrel 101 and the second rotating barrel 102 can be completely clear, when installing a new spiral packing 8, the installation and fixation of the spiral packing 8 can be completed according to the above reverse steps, meanwhile, the sealing performance between the first rotating barrel 101 and the casing 7 and between the second rotating barrel 7 and the casing 7 can be respectively realized through the first sealing ring 103 and the second sealing ring 104, oil liquid exists on the inner side of the connecting barrel 9 and the upper side of the spiral packing 8 during normal work, when the polished rod 4 moves up and down on the inner side of the spiral packing 8, the polish rod 4 brings the chips falling off from the upper surface of the spiral packing 8 into oil, the second filter screen 210 shields the chips on the lower side, the oil pump 202 circulates and flows the oil on the inner side of the connecting cylinder 9 and the upper side of the spiral packing 8 through the first connecting pipe 203, the fixed cylinder 201, the storage cylinder 208, the first filter screen 209, the second connecting pipe 204, the connecting cylinder 9, the third connecting pipe 205, the through hole 105 and the communication hole 6, and the oil on the inner side of the connecting cylinder 9 and the upper side of the spiral packing 8 also flows circularly with the chips, when the chips flow to the inner side of the storage cylinder 208, the first filter screen 209 blocks the chips to enable the chips to be left on the inner side of the storage cylinder 208, the oil on the inner side of the connecting cylinder 9 and the upper side of the spiral packing 8 is ensured not to contain the chips, thereby the friction force between the polish rod 4 and the spiral packing 8 can be reduced, when the chips on, the containing cylinder 208 is separated from the fixed cylinder 201, then the scraps on the first filter screen 209 can be cleaned, after the cleaning is finished, the containing cylinder 208 can be connected with the fixed cylinder 201 again according to the reverse steps, and meanwhile, the third sealing ring 206 can realize the sealing performance between the sealing disc 207 and the fixed cylinder 201.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. The utility model provides an oil field beam-pumping unit import sealing device, includes casing (7) and gland (3), its characterized in that: the spiral shell packing machine is characterized in that a gland (3) is spirally connected to the outer side of the top end of the shell (7), a pressing ring (5) is fixedly connected to the inner side of the top end of the gland (3), communicating holes (6) are formed in the inner side of the pressing ring (5), a material taking device (1) is spirally connected to the inner side of the shell (7), a spiral packing (8) is arranged on the inner side of the material taking device (1), a connecting cylinder (9) is fixedly connected to the bottom end of the shell (7), a chip removal device (2) is fixedly connected to the right end of the shell (7), a polished rod (4) is slidably connected to the inner side of the spiral packing (8), the polished rod (4) penetrates through the gland (3) and the connecting cylinder (9), and the material taking device (1) comprises a first rotary cylinder (101), a second rotary cylinder (102), a first sealing ring (, the inboard spiral connection of casing (7) has first rotary drum (101), the inboard fixedly connected with second sealing ring (104) in top of first rotary drum (101), and first rotary drum (101) pass through second sealing ring (104) and casing (7) block, conducting hole (105) have been seted up to the inboard all around of first rotary drum (101), the bottom outside spiral connection of first rotary drum (101) has second rotary drum (102), and second rotary drum (102) and casing (7) spiral connection, the inboard fixedly connected with first sealing ring (103) in bottom of second rotary drum (102), and second rotary drum (102) pass through first sealing ring (103) and casing (7) sealing connection, chip removal device (2) are including solid fixed cylinder (201), oil pump (202), first connecting pipe (203), second connecting pipe (204), third connecting pipe (205), third sealing ring (206), Sealing disc (207), storage barrel (208), first filter screen (209) and second filter screen (210), the right-hand member fixedly connected with of casing (7) is fixed barrel (201), the top fixedly connected with oil pump (202) of fixed barrel (201), the entrance end intercommunication of oil pump (202) has first connecting pipe (203), and first connecting pipe (203) with be located the right side conducting hole (105) intercommunication, the inboard spiral connection in bottom of fixed barrel (201) has storage barrel (208), the inboard fixedly connected with first filter screen (209) of storage barrel (208), the inboard intercommunication in bottom of storage barrel (208) has second connecting pipe (204), and the other end and connecting barrel (9) intercommunication of second connecting pipe (204), the inboard fixedly connected with second filter screen (210) of connecting barrel (9), the inboard intercommunication in left end of connecting barrel (9) has third connecting pipe (205), and a third connection pipe (205) is communicated with the via hole (105) positioned at the left side.

2. The inlet sealing device of the oil pumping unit in the oil field according to claim 1, characterized in that: the inner sides of the left end and the right end of the first rotary drum (101) are provided with operation holes (106).

3. The inlet sealing device of the oil pumping unit in the oil field according to claim 1, characterized in that: the spiral direction of the first rotary drum (101) and the shell (7) is opposite to the spiral direction of the first rotary drum (101) and the second rotary drum (102).

4. The inlet sealing device of the oil pumping unit in the oil field according to claim 1, characterized in that: the outside fixedly connected with of containing cylinder (208) seals dish (207), the inboard fixedly connected with third sealing ring (206) in top of sealed dish (207), and sealed dish (207) through third sealing ring (206) and solid fixed cylinder (201) sealing connection.

5. The inlet sealing device of the oil pumping unit in the oil field according to claim 1, characterized in that: the first sealing ring (103), the second sealing ring (104) and the third sealing ring (206) are all made of rubber rings.

6. The inlet sealing device of the oil pumping unit in the oil field according to claim 1, characterized in that: the joints between the second connecting pipe (204) and the third connecting pipe (205) and the connecting cylinder (9) are all positioned at the upper side of the second filter screen (210).