CN217632243U - Visual mud sealing system for top drive - Google Patents
Visual mud sealing system for top drive Download PDFInfo
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- CN217632243U CN217632243U CN202221174626.0U CN202221174626U CN217632243U CN 217632243 U CN217632243 U CN 217632243U CN 202221174626 U CN202221174626 U CN 202221174626U CN 217632243 U CN217632243 U CN 217632243U
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Abstract
The utility model provides a visual mud sealing system for top is driven, this visual mud sealing system include mud umbrella subassembly and malleation seal assembly, and malleation seal assembly includes: the oil cup is fixed on one side of the gooseneck through an oil cup support, the throttle valve block is fixed on the other side of the gooseneck through a valve block support, an oil inlet of the throttle valve block is connected with an oil outlet of a lubricating oil pump, an oil outlet of the throttle valve block is connected with an oil inlet of the oil cup, a first oil outlet of the oil cup is connected with an oil inlet of an upper sealing support on the mud umbrella assembly, a second oil outlet of the oil cup is connected with an oil inlet of an air filter of the reduction gearbox, and an oil inlet of the lubricating oil pump is connected with an oil outlet of a box body of the reduction gearbox. The oil seal of the internal rotating framework can be found in time to be damaged and can be replaced in time, the situation that well fluid enters the interior of the reduction gearbox after leaking is avoided, and the top drive damage can be avoided, so that economic loss is caused.
Description
Technical Field
The utility model relates to a sealed technical field is driven on the top, especially relates to a visual mud sealing system for driving on top.
Background
The top driving well drilling device (top drive) is a well drilling device which directly drives a drilling tool from the top of a well frame to perform rotary drilling and completes various well drilling operations such as circulating drilling fluid, connecting an upright post, screwing on and unscrewing a screw, drilling an inverted hole and the like. In order to prevent the leaked washing pipe from entering the inside of the reduction gearbox during the operation of the top-drive drilling device, a mud sealing device is needed to block well fluid or mud outside the reduction gearbox. The device needs good sealing effect, and if sealing fails, well liquid can enter the interior of the reduction gearbox body, and the gears and the main shaft are abraded to influence the service life because the reduction gearbox is meshed with the gears and the main shaft runs at high speed.
However, whether the sealing performance of the sealing device in the top-driving drilling device is damaged or not can not be directly observed by naked eyes, and factors such as untimely maintenance, difficult maintenance and the like also exist. Moreover, sealing device adopts the rubber material to make at present to because structural reason is not very ideal to the effect that prevents mud seepage to the box inside, and liquid such as separation well liquid that can not be fine gets into the box, because the rubber material with can't observe and lead to that the replacement cycle is short, maintain the difficulty, very big increase cost of labor and top drive drilling equipment self cost.
Therefore, it is necessary to develop a visual mud sealing system for top drive, which can find out that the oil seal of the internal rotating framework is damaged in time, can be replaced in time, avoid the situation that well fluid enters the interior of the reduction gearbox after leaking, and avoid the damage of the top drive and the economic loss.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art or the correlation technique.
Therefore the utility model provides a visual mud sealing system for top is driven.
In view of this, the utility model provides a visual mud sealing system for top is driven, visual mud sealing system includes mud umbrella subassembly and malleation seal assembly, malleation seal assembly includes: the oil cup is fixed on one side of the gooseneck through an oil cup support, the throttle valve block is fixed on the other side of the gooseneck through a valve block support, an oil inlet of the throttle valve block is connected with an oil outlet of a lubricating oil pump, an oil outlet of the throttle valve block is connected with an oil inlet of the oil cup, a first oil outlet of the oil cup is connected with an oil inlet of an upper sealing support on the mud umbrella assembly, a second oil outlet of the oil cup is connected with an oil inlet of a reduction gearbox air filter, and an oil inlet of the lubricating oil pump is connected with an oil outlet of a reduction gearbox box body.
Further, the mud umbrella assembly comprises:
the umbrella comprises an umbrella body, wherein a main shaft hole and a special-shaped accommodating groove communicated with the main shaft hole are formed in the center of the umbrella body, and a first fixing hole and a first mounting hole are formed in two ends of the umbrella body;
a main shaft hole is formed in the center of the bearing isolation ring, connecting holes are formed in two ends of the main shaft hole, the connecting holes are connected with the first fixing holes through first fixing bolts, and the bearing isolation ring is located in the special-shaped accommodating groove;
the bearing isolation ring is sleeved on the bearing isolation ring, and the part above the bulge edge is arranged in the special-shaped accommodating groove;
the umbrella body, the bearing isolating ring and the upper sealing support are sleeved on a main shaft of the reduction gearbox, and the upper sealing support and the upper transparent cover are fixedly connected through a second fixing bolt in a second fixing hole.
Further, the upper seal holder further comprises:
the first sealing groove is formed in the periphery of the second mounting hole, the first sealing groove is located at one end, facing the umbrella body, of the upper sealing support, and a combined sealing ring is arranged in the first sealing groove.
Further, the upper seal holder further comprises:
the second sealing groove is formed in the periphery of the second mounting hole, the second sealing groove is located at one end, facing the upper transparent cover, of the upper sealing support, and an O-shaped ring is arranged in the second sealing groove.
Further, the mud umbrella assembly further comprises:
the first pair of rotating framework oil seals are arranged in the second mounting holes;
the second pair of rotating framework oil seals are arranged in the upper transparent cover, and the second pair of rotating framework oil seals and the first pair of rotating framework oil seals are arranged in an aligned mode;
the bearing isolation ring is arranged between the first pair of rotating framework oil seals and the main shaft, the second pair of rotating framework oil seals and the main shaft are provided with a wear-resistant sleeve, the upper portion of the wear-resistant sleeve is adjacent to the bearing isolation ring, and the lower end of the first fixing bolt penetrates through the upper portion of the wear-resistant sleeve.
Further, distance rings are arranged between the first pair of rotating framework oil seals and between the second pair of rotating framework oil seals.
Furthermore, a sealing gasket is arranged between the wear-resistant sleeve and the bearing isolation ring.
Further, the mud umbrella assembly further comprises:
the straight-through type oil filling cup is arranged on the umbrella body and is positioned in the first mounting hole, and butter is filled into the cavities of the umbrella body and the upper sealing support through the straight-through type oil filling cup.
Furthermore, the umbrella body, the bearing isolating ring and the upper sealing support are all made of metal materials.
The utility model provides a technical scheme can include following beneficial effect:
the positive pressure sealing assembly is fast and simple to install, the original structure of the top drive is not damaged, lubrication can be continuously provided for the rotating inner framework oil seal of the slurry umbrella assembly, the service life of the rotating inner framework oil seal is prolonged, once the rotating inner framework oil seal is damaged and fails, the liquid level of oil in an oil cup of the positive pressure sealing assembly can be rapidly reduced, the damage of the rotating inner framework oil seal can be visually observed, the positive pressure sealing assembly can be replaced in time, the situation that well liquid enters the interior of a reduction gearbox after leaking is avoided, and the damage of the top drive and the economic loss are avoided; the setting of oil cup enables in some fluid gets into the mud umbrella subassembly through the upper seal support oil inlet, and in some fluid flowed back the reducing gear box through reducing gear box air cleaner, the velocity of flow of fluid can be adjusted to the choke valve piece, can keep the invariant of liquid level height in the oil cup, and then realizes the liquid level warning effect of oil cup.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 shows a connection schematic of a visual mud sealing system for top drive;
FIG. 2 shows a schematic of the installation of a visual mud sealing system for top drive;
FIG. 3 shows a schematic view of a mud umbrella assembly;
FIG. 4 shows a schematic view of an umbrella body;
FIG. 5 shows a schematic view of an upper seal holder;
fig. 6 shows a schematic view of a bearing spacer ring.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 6 is:
100 slurry umbrella component, 101 umbrella body, 1011 main shaft hole, 1012 special-shaped containing groove, 1013 first fixing hole, 1014 first mounting hole, 102 first fixing bolt, 103 main shaft, 104 straight-through type oil filling cup, 105 bearing isolating ring, 1051 connecting hole, 106 combined sealing ring, 107 first pair of rotating framework oil seals, 108 upper sealing support, 1081 second mounting hole, 1082 convex edge, 1083 second fixing hole, 1084 upper sealing support oil inlet hole, 1085 first sealing groove, 1086 second sealing groove, 109 distance ring, 110 sealing gasket, 111 second fixing bolt, 112O-shaped ring, 113 upper transparent cover, 114 second pair of rotating framework oil seals, 115 wear-resistant sleeve, 200 positive pressure sealing component, 201 oil cup, 202 throttle valve block, 300 pipeline, 400 gooseneck, 500 lubricating oil pump oil outlet, 600 upper sealing support oil inlet, and 700 reduction box air cleaner oil inlet.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
FIG. 1 shows a connection schematic of a visual mud sealing system for top drive; FIG. 2 shows a schematic of the installation of a visual mud sealing system for top drive;
as shown in fig. 1 and 2, the present embodiment provides a visual mud sealing system for top drive, which includes a mud umbrella assembly 100 and a positive pressure seal assembly 200, wherein the positive pressure seal assembly 200 includes: the oil cup 201 and the throttle valve block 202, the oil cup 201 is fixed on one side of the gooseneck 400 through an oil cup support, the throttle valve block 202 is fixed on the other side of the gooseneck 400 through a valve block support, an oil inlet of the throttle valve block 202 is connected with an oil outlet 500 of a lubricating oil pump, an oil outlet of the throttle valve block 202 is connected with an oil inlet of the oil cup 201, a first oil outlet of the oil cup 201 is connected with an oil inlet 600 of an upper sealing support on the mud umbrella assembly 100, a second oil outlet of the oil cup 201 is connected with an oil inlet 700 of an air cleaner of the reduction gearbox, and an oil inlet of the lubricating oil pump is connected with an oil outlet of the reduction gearbox box.
The positive pressure sealing assembly 200 is fast and simple to install, the original structure of the top drive is not damaged, lubrication can be continuously provided for the rotating inner framework oil seal of the slurry umbrella assembly 100, the service life of the rotating inner framework oil seal is prolonged, once the rotating inner framework oil seal is damaged and fails, the liquid level of oil in the oil cup 201 of the positive pressure sealing assembly 200 can rapidly descend, the damage of the rotating inner framework oil seal can be visually observed, the replacement can be carried out in time, the situation that well fluid enters the interior of a reduction gearbox after leakage occurs is avoided, and the damage of the top drive and the economic loss are avoided; the setting of oil cup 201 enables in partly fluid gets into mud umbrella subassembly 100 through upper seal support oil inlet 600, and partly fluid flows back in the reducing gear box through reducing gear box air cleaner oil inlet 700, and the velocity of flow of fluid can be adjusted to throttle valve piece 202, can keep the invariant of liquid level height in the oil cup 201, and then realizes the liquid level warning effect of oil cup 201.
Specifically, the positive pressure sealing assembly 200 is used in cooperation with the slurry umbrella assembly 100, the throttle valve block 202 and the oil cup 201 are fixed on the throttle valve block support and the oil cup support respectively, and then the two supports are mounted on two sides of the gooseneck 400 respectively by using original gooseneck fixing bolts. A three-way joint is connected to an oil outlet 500 of a lubricating oil pump of a top drive body, a three-way joint is connected to the upper surface of an oil inlet 700 of an air filter of a top drive reduction gearbox, a joint is installed at an oil inlet 600 of an upper sealing support on a slurry umbrella assembly 100, and a pipeline 300 is respectively connected with an oil inlet of the three-way joint of the lubricating oil pump 500, an oil inlet of a throttle valve block 202, an oil outlet of the throttle valve block 202, an oil inlet of an oil cup 201, a first oil outlet of the oil cup 201, an oil inlet 600 of the upper sealing support and a three-way joint of a second oil outlet of the oil cup 201 and the oil inlet 700 of the air filter of the reduction gearbox. The flow direction of oil liquid sequentially passes through an oil outlet of the reduction gearbox body, a pipeline, an oil inlet of a lubricating oil pump, an oil outlet of the lubricating oil pump, an oil inlet of a throttle valve block, an oil outlet of the throttle valve block, an oil inlet of an oil cup and the oil cup, the oil liquid entering the oil cup is divided into two lines, one line is a first oil outlet, an oil inlet of an upper sealing support and a slurry umbrella assembly, and the other line is a second oil outlet, an oil inlet of an air filter of the reduction gearbox body and the reduction gearbox body.
It should be noted that the oil cup 201 is made of acrylic material, has transparency, and can directly observe the liquid level height therein with naked eyes, and when the liquid level drops sharply, it represents that the oil seal of the rotating inner frame in the slurry umbrella component 100 is damaged and needs to be replaced; the throttle valve block 202 regulates the flow rate of the lubricating oil entering the oil cup 201, so that the liquid level in the oil cup 201 is kept in a stable range.
Example 2
FIG. 3 shows a schematic view of a mud umbrella assembly; FIG. 4 shows a schematic view of an umbrella body; fig. 6 shows a schematic view of a bearing spacer ring.
As shown in fig. 3, 4 and 6, the present embodiment provides a slurry umbrella assembly 100 on the basis of embodiment 1, and the slurry umbrella assembly 100 includes:
the umbrella comprises an umbrella body 101, wherein a main shaft hole 1011 and a special-shaped accommodating groove 1012 communicated with the main shaft hole 1011 are arranged at the center of the umbrella body 101, and a first fixing hole 1013 and a first mounting hole 1014 are arranged at two ends of the umbrella body 101;
a main shaft hole is formed in the center of the bearing isolation ring 105, connecting holes 1051 are formed in two ends of the main shaft hole, the connecting holes 1051 are connected with the first fixing holes 1013 through first fixing bolts 102, and the bearing isolation ring 105 is located in the special-shaped accommodating groove 1012;
the center of the upper sealing support 108 is provided with a second mounting hole 1081, the circumferential center of the second mounting hole 1081 is provided with a protrusion edge 1082, one end of the protrusion edge 1082 is provided with a second fixing hole 1083, the other end of the protrusion edge 1082 is provided with an upper sealing support oil inlet 1084, the axis of the upper sealing support oil inlet 1084 is perpendicular to the axis of the second mounting hole 1081, the second mounting hole 1081 is sleeved on the bearing isolation ring 105, and the part above the protrusion edge 1081 is arranged in the special-shaped accommodating groove 1012;
the umbrella body 101, the bearing isolating ring 105 and the upper sealing support 108 are sleeved on the main shaft 103 of the reduction gearbox, and the upper sealing support 108 and the upper transparent cover 113 are fixedly connected through a second fixing bolt 111 in a second fixing hole 1083.
It should be noted that, a joint is installed on the upper sealing bracket oil inlet 1084 to form an upper sealing bracket oil inlet 600.
The umbrella body 101 and the bearing isolation ring 105 are fastened through the first fixing bolt 102, one part of the upper sealing support 108 extends into a gap between the special-shaped accommodating groove 1012 and the bearing isolation ring 105, pressure between components is increased, on one hand, sealing performance between the components can be improved, on the other hand, replacement, installation and cleaning are facilitated, and working efficiency is improved.
It should be noted that the umbrella body 101 has a plurality of first fixing holes 1013, the bearing spacer 105 has a plurality of connecting holes 1051, the connecting holes 1051 correspond to the positions of the first fixing holes 1013, and the connecting arrangement of the first fixing holes 1013 and the connecting holes 1051 can ensure uniform stress and no inclination during fastening, thereby improving the reliability of the slurry umbrella assembly 100.
The bearing isolation ring 105 is a labyrinth seal structure, which is equivalent to increasing a plurality of seals, thereby improving the sealing performance of the slurry umbrella assembly 100 and greatly improving the sealing performance of the original slurry umbrella assembly 100.
Fig. 5 shows a schematic view of the upper seal holder.
As shown in fig. 5, the upper seal holder 108 further includes:
the first seal groove 1085 is disposed on the outer periphery of the second mounting hole 1081, the first seal groove 1085 is located at one end of the upper seal bracket 108 facing the umbrella body 101, and the combination seal ring 106 is disposed in the first seal groove 1085.
Further, the upper seal holder 108 further includes:
the second seal groove 1086 is formed in the periphery of the second mounting hole 1081, the second seal groove 1086 is located at one end, facing the upper transparent cover 113, of the upper seal support 108, and an O-ring 112 is arranged in the second seal groove 1086.
By combining the provision of the sealing ring 106 and the O-ring 112, the sealing performance of the mud umbrella assembly 100 can be improved.
It should be noted that, the umbrella body 101 and the upper sealing bracket 108 move relatively, the combined sealing ring 106 is a rotary seal satisfying the sealing condition, and the O-ring 112 is used between two components (the upper sealing bracket 108 and the upper transparent cover 113) which do not move relatively, so as to improve the sealing performance and save the production cost.
Wherein, the upper sealing support 108 is composed of a plurality of seals, and the sealing performance is better than that of the prior structure.
Further, the mud umbrella assembly 100 further comprises:
a first pair of rotating frame oil seals 107 disposed in the second mounting holes 1081;
a second pair of rotating frame oil seals 114 disposed within the upper transparent cover 113, the second pair of rotating frame oil seals 114 being aligned with the first pair of rotating frame oil seals 107;
a wear-resistant sleeve 115 is arranged between the first pair of rotating framework oil seals 107 and the main shaft 103, and between the second pair of rotating framework oil seals 114 and the main shaft 103, the upper part of the wear-resistant sleeve 115 is adjacent to the bearing isolating ring 105, and the lower end of the first fixing bolt 102 penetrates through the upper part of the wear-resistant sleeve 115.
Wherein, the rotating framework oil seal is mainly used in rotatable occasions, and has strong reinforcing effect, stable quality, strong wear resistance and long service life.
The addition of the second pair of rotating frame oil seals 114 further increases the number of seals of the mud umbrella assembly 100, improves the sealing performance of the mud umbrella assembly 100, and thus increases the service life of the mud umbrella assembly 100.
Further, distance rings 109 are provided between the first pair of rotating frame oil seals 107 and between the second pair of rotating frame oil seals 114.
The supporting performance between the first pair of rotating framework oil seals 107 and between the second pair of rotating framework oil seals 114 can be improved through the arrangement of the distance ring 109, the accuracy of the mounting positions of the rotating framework oil seals is guaranteed, the rotating framework oil seals are guaranteed not to generate play in the using process, and the rotating framework oil seals can shield a grease filling port when play occurs, so that grease injection is influenced.
Further, a seal 110 is provided between the wear sleeve 115 and the bearing spacer ring 105.
The sealing gasket 110 is an oil-resistant rubber asbestos plate, if slurry breaks through the seal of the bearing isolation ring 105 and is left along the main shaft 103, the sealing gasket 110 can also play a role in blocking the slurry, so that the slurry is prevented from continuously permeating downwards, and the working reliability of the slurry umbrella component 100 is improved.
Further, the mud umbrella assembly 100 further comprises:
the straight-through type oil filling cup 104 is arranged on the umbrella body 101, the straight-through type oil filling cup 104 is located in the first mounting hole 1014, and grease is injected into cavities of the umbrella body 101 and the upper sealing support 108 through the straight-through type oil filling cup 104.
Wherein, through injecting the butter in the cavity of umbrella body 101 and upper seal support 108, can make the cavity inside fill up the butter and prevent the mud entering, further prevent that mud from getting into the speed reduction box.
Further, the umbrella body 101, the bearing isolation ring 108 and the upper sealing bracket 108 are all made of metal.
The metal umbrella body 101, the bearing isolation ring 105 and the upper sealing support 108 have good corrosion resistance, high temperature resistance and friction resistance.
When installation mud umbrella subassembly 100, only need to demolish original mud umbrella, with mud umbrella subassembly 100 direct mount with the bolt-up can, have good interchangeability, drive perfect adaptation with the top, improve work efficiency.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims (9)
1. A visual mud sealing system for top drive, characterized in that, visual mud sealing system includes mud umbrella subassembly and positive pressure seal assembly, positive pressure seal assembly includes: the oil cup is fixed on one side of the gooseneck through an oil cup support, the throttle valve block is fixed on the other side of the gooseneck through a valve block support, an oil inlet of the throttle valve block is connected with an oil outlet of a lubricating oil pump, an oil outlet of the throttle valve block is connected with an oil inlet of the oil cup, a first oil outlet of the oil cup is connected with an oil inlet of an upper sealing support on the mud umbrella assembly, a second oil outlet of the oil cup is connected with an oil inlet of a reduction gearbox air filter, and an oil inlet of the lubricating oil pump is connected with an oil outlet of a reduction gearbox box body.
2. The visual mud sealing system for a top drive of claim 1, wherein the mud umbrella assembly comprises:
the umbrella comprises an umbrella body, wherein a main shaft hole and a special-shaped accommodating groove communicated with the main shaft hole are formed in the center of the umbrella body, and a first fixing hole and a first mounting hole are formed in two ends of the umbrella body;
a main shaft hole is formed in the center of the bearing isolation ring, connecting holes are formed in two ends of the main shaft hole, the connecting holes are connected with the first fixing holes through first fixing bolts, and the bearing isolation ring is located in the special-shaped accommodating groove;
the bearing isolation ring is sleeved on the bearing isolation ring, and the part above the bulge edge is arranged in the special-shaped accommodating groove;
the umbrella body, the bearing isolating ring and the upper sealing support are sleeved on a main shaft of the reduction gearbox, and the upper sealing support is fixedly connected with the upper transparent cover through a second fixing bolt in a second fixing hole.
3. The visual mud sealing system for a top drive of claim 2, wherein the upper seal holder further comprises:
the first sealing groove is formed in the periphery of the second mounting hole, the first sealing groove is located at one end, facing the umbrella body, of the upper sealing support, and a combined sealing ring is arranged in the first sealing groove.
4. The visual mud sealing system for a top drive of claim 2, wherein the upper seal carrier further comprises:
the second sealing groove is formed in the periphery of the second mounting hole and located at one end, facing the upper sealing support, of the transparent cover, and an O-shaped ring is arranged in the second sealing groove.
5. The visual mud sealing system for a top drive of claim 4, wherein the mud umbrella assembly further comprises:
the first pair of rotating framework oil seals are arranged in the second mounting holes;
the second pair of rotating framework oil seals are arranged in the upper transparent cover, and the second pair of rotating framework oil seals and the first pair of rotating framework oil seals are arranged in an aligned mode;
the bearing isolation ring is arranged between the first pair of rotating framework oil seals and the main shaft, the second pair of rotating framework oil seals and the main shaft are provided with a wear-resistant sleeve, the upper portion of the wear-resistant sleeve is adjacent to the bearing isolation ring, and the lower end of the first fixing bolt penetrates through the upper portion of the wear-resistant sleeve.
6. The visual mud sealing system for top drive of claim 5, wherein a distance ring is provided between the first pair of rotating skeleton oil seals and between the second pair of rotating skeleton oil seals.
7. The visual mud sealing system for a top drive of claim 5, wherein a gasket is disposed between the wear sleeve and the bearing spacer ring.
8. The visual mud sealing system for a top drive of claim 2, wherein the mud umbrella assembly further comprises:
through type oiling cup, set up in on the umbrella body, through type oiling cup is located in the first mounting hole, through type oiling cup to the umbrella body with inject the butter in the cavity of upper seal support.
9. The visual mud sealing system for a top drive of any one of claims 2 to 8, wherein the umbrella body, the bearing spacer ring and the upper sealing bracket are all made of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221174626.0U CN217632243U (en) | 2022-05-09 | 2022-05-09 | Visual mud sealing system for top drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221174626.0U CN217632243U (en) | 2022-05-09 | 2022-05-09 | Visual mud sealing system for top drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217632243U true CN217632243U (en) | 2022-10-21 |
Family
ID=83654174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221174626.0U Active CN217632243U (en) | 2022-05-09 | 2022-05-09 | Visual mud sealing system for top drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217632243U (en) |
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2022
- 2022-05-09 CN CN202221174626.0U patent/CN217632243U/en active Active
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Denomination of utility model: Visual Mud Sealing System for Top Drive Effective date of registration: 20230605 Granted publication date: 20221021 Pledgee: Panjin science and technology Financing Guarantee Co.,Ltd. Pledgor: PANJIN LIAOHE OILFIELD TIANYI PETROLEUM EQUIPMENT Co.,Ltd. Registration number: Y2023210000131 |