CN213176750U - Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive - Google Patents
Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive Download PDFInfo
- Publication number
- CN213176750U CN213176750U CN202021578383.8U CN202021578383U CN213176750U CN 213176750 U CN213176750 U CN 213176750U CN 202021578383 U CN202021578383 U CN 202021578383U CN 213176750 U CN213176750 U CN 213176750U
- Authority
- CN
- China
- Prior art keywords
- sealing cover
- sealing
- top drive
- positive pressure
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 155
- 239000012780 transparent material Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 25
- 239000012208 gear oil Substances 0.000 abstract description 14
- 239000003921 oil Substances 0.000 abstract description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 7
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 7
- 241001330002 Bambuseae Species 0.000 abstract description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 7
- 239000011425 bamboo Substances 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000005574 cross-species transmission Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model relates to a dropper assembly for micro-positive pressure sealing of the upper end of a top drive spindle, which comprises a lower joint, an upper joint, a lower sealing cover, a sealing barrel, an inlet pipe, an upper sealing cover and an overflow pipeline, wherein the lower sealing cover and the upper sealing cover are respectively sealed at the lower port and the upper port of the sealing barrel; an upper joint is arranged at the upper part of the upper sealing cover, an inlet pipe is in interference fit with the upper sealing cover, and the inlet pipe is arranged in the sealing cylinder and communicated with the upper joint; the bottom of the lower sealing cover is provided with a lower joint communicated with the sealing cylinder; the sealing barrel is also provided with an overflow pipeline. The utility model discloses a sealed section of thick bamboo is transparent material or sets up the observation window, observes interior liquid stream of sealed section of thick bamboo, liquid level. The top drive is characterized in that a burette assembly is arranged at the upper end of the top drive main shaft, and the oil taking quantity of the micro-positive pressure seal at the upper end of the top drive main shaft is adjusted to ensure that the pressure and the flow of the existing forced gear oil lubricating system of the top drive are not influenced. Meanwhile, the oil flows back to the gear box through an overflow port of the overflow pipeline, and the loss of the oil quantity of the gear oil lubricating system is avoided.
Description
Technical Field
The utility model relates to the technical field of petroleum machinery, especially, relate to a be used for top to drive sealed burette assembly of main shaft upper end pressure-fired and top drive.
Background
The mud feeding of the top drive gear box is a main pain point of the existing top drive equipment at home and abroad. The washing pipe device arranged in the bell jar at the upper end of the main shaft is a channel for high-pressure and large-discharge mud during drilling operation. The normal leakage of the washpipe apparatus or a puncture in the event of a failure can result in a build up of mud inside the bell jar. The mud has stronger corrosivity to materials such as metal, damages main shaft upper end seal structure and oil blanket easily, and mud drives main shaft upper end seal structure through the top and gets into the gear box, causes the top and drives equipment trouble and maintenance, will seriously influence oil and gas drilling operation safety and efficiency.
If the oil seal is not lubricated and maintained in time, the oil seal is easily damaged by dry grinding, and when slurry is accumulated in the bell jar, the slurry easily enters the gear box.
Even when normal lubrication maintenance, the rotation of main shaft drives the lubricating grease in the annular lubricating oil cavity and continuously cuts, generates heat, volatilizes to annular lubricating oil cavity forms malleation gas storehouse, and when the oil blanket can not reach airtight requirement, malleation gas is got rid of from annular lubricating oil cavity. After the main shaft stops rotating, the gas in the annular lubricating oil cavity is cooled, the cavity forms a negative pressure bin, and when slurry is accumulated in the bell jar, the slurry is easily sucked into the annular lubricating oil cavity, so that the corrosion damage to the sealing structure at the upper end of the main shaft is further accelerated.
The rotation and the stop of the top drive main shaft are repeated in cycles, and the diary and the month are accumulated, so that more mud accumulated in the bell jar enters the annular lubricating oil cavity, the sealing structure at the upper end of the main shaft is damaged, and finally the mud enters the gear box, therefore, equipment or a method is needed to solve the problem that the mud enters the gear box.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a be used for top to drive sealed burette assembly of main shaft upper end pressure-fired, it can set up in the main shaft upper end to maintain stable oil blanket lubrication and prevent that accumulational mud gets into annular seal chamber in the bell jar, promote the life of oil blanket, ensure that mud does not get into the gear box.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a burette assembly for micro-positive pressure sealing of the upper end of a top drive spindle is characterized in that a bell jar is arranged at the upper end of the top drive spindle and fixed above a gearbox cover, the burette assembly is arranged above the bell jar at the upper end of the top drive spindle, and the burette assembly comprises a lower joint, an upper joint, a lower sealing cover, a sealing barrel, an inlet pipe, an upper sealing cover and an overflow pipeline;
the lower sealing cover and the upper sealing cover are respectively sealed at the lower port and the upper port of the sealing cylinder; the upper joint is arranged at the upper part of the upper sealing cover, the inlet pipe is in interference fit with the upper sealing cover, and the inlet pipe is arranged in the sealing cylinder and communicated with the upper joint; a lower joint is arranged at the bottom of the lower sealing cover and communicated with the sealing cylinder; and the sealing barrel is also provided with an overflow pipeline.
Optionally, the overflow line comprises a bottom side fitting and an inner line; the side joint is arranged on the side surface of the lower sealing cover; the inner pipeline is arranged in the sealing cylinder and is in interference fit with the lower sealing cover; the bottom of the inner pipeline is communicated with the side joint.
Optionally, the overflow pipeline is a middle side joint, and the middle side joint is arranged at the middle upper part of the sealing barrel and is communicated with the inside of the sealing barrel.
Optionally, an annular groove is formed in the lower portion of the upper sealing cover, and the annular groove clamps the upper end portion of the sealing cylinder.
Optionally, an annular groove is formed in the upper portion of the lower sealing cover to clamp the lower end portion of the sealing cylinder.
Optionally, the contact position of the sealing cylinder and the upper sealing cover and the lower sealing cover is provided with a sealing ring.
Optionally, the upper sealing cover and the lower sealing cover are fixed with the sealing cylinder through a plurality of bolts.
Optionally, the bolt penetrates through the lower sealing cover, the sealing cylinder and the upper sealing cover and is fixed through a flat washer, an elastic washer and a nut.
Optionally, the sealing cylinder is made of transparent material or provided with an observation window.
Optionally, a top drive of the dropper device with a micro-positive pressure seal at the upper end of a main shaft is provided with the dropper assembly.
(III) advantageous effects
The utility model has the advantages that: the utility model relates to a be used for top to drive sealed burette assembly of main shaft upper end pressure-fired, sealed section of thick bamboo be transparent material or set up the observation window, can observe liquid stream, liquid level in the sealed section of thick bamboo, and can provide the foundation of adjusting the inlet tube flow through the liquid stream size of observing the inlet tube, when the export does not need flow output, the overflow mouth that overflows the pipeline can be followed to unnecessary flow simultaneously and flows.
A top drive with a burette assembly arranged at the upper end of a top drive main shaft can adjust the oil taking amount of a micro-positive pressure seal at the upper end of the top drive main shaft according to the flow of an inlet pipe of the burette assembly, and ensures that the pressure and the flow of the top drive conventional forced gear oil lubrication system are not influenced. Meanwhile, redundant gear oil can flow back to the gear box through an overflow port of the overflow pipeline, and loss of oil quantity of the gear oil lubricating system is avoided.
Drawings
Fig. 1 is a sectional view of a dropper assembly for micro-positive pressure sealing of an upper end of a top drive spindle according to the present invention;
FIG. 2 is an external schematic view of FIG. 1;
fig. 3 is a cross-sectional view of another dropper assembly for micro-positive pressure sealing of the upper end of the top drive spindle according to the present invention;
fig. 4 is an external schematic view of fig. 3.
[ description of reference ]
1: an upper joint;
2: an upper sealing cover;
3: an inlet tube;
4: a sealing cylinder;
5: an inner pipe;
6: a lower sealing cover;
7: a lower joint;
8: a side joint;
9: a seal ring;
10: a bolt;
11: a nut;
12; an elastic washer;
13: a flat washer;
14: and a middle side joint.
Detailed Description
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Example 1:
referring to fig. 1 and 2, a bell jar is arranged at the upper end of a top drive spindle and fixed above a gear box cover, and a dropper assembly is arranged above the bell jar at the upper end of the top drive spindle, the dropper assembly for micro-positive pressure sealing of the upper end of the top drive spindle comprises a lower connector 7, an upper connector 1, a lower sealing cover 6, a sealing cylinder 4, an inlet pipe 3, an upper sealing cover 2 and an overflow pipeline;
the lower sealing cover 6 and the upper sealing cover 2 are respectively sealed at the lower port and the upper port of the sealing cylinder 4, and the structures of the lower sealing cover 6 and the upper sealing cover 2 can be matched with the structure of the sealing cylinder 4 to ensure the sealing effect; an upper connector 1 is arranged on the upper portion of an upper sealing cover 2, an external thread is arranged on the upper connector 1, a threaded hole is formed in the upper sealing cover 2, one end, with the thread, of the upper connector 1 is inserted into the threaded hole, and the upper connector is locked on the upper portion of the upper sealing cover 2 through a nut. The inlet pipe 3 is in interference fit with the upper sealing cover 2, the inlet pipe 3 is arranged inside the sealing barrel 4, preferably, the inlet pipe 3 vertically faces the inside of the sealing barrel 4 and is communicated with the upper joint 1; the bottom of the lower sealing cover 6 is provided with a lower joint 7 communicated with the sealing cylinder 4; the lower joint 7 is provided with external threads, the lower sealing cover 6 is provided with a threaded hole, one end of the lower joint 7 with threads is inserted into the threaded hole, and the lower end of the lower sealing cover 6 is locked by a nut. Of course, the present invention is not limited to this, and the connection mode of the upper joint 1 and the upper sealing cover 2 or the lower joint 7 and the lower sealing cover 6 may adopt other modes that can be fixed, for example, the upper joint 1 and the lower joint 7 are fixed on the sealing cover by bolts all around. Still be equipped with on the sealed section of thick bamboo 4 and spill over the pipeline, when the export does not need flow output, unnecessary flow can flow from the overflow mouth that spills over the pipeline, and unnecessary gear oil can flow back to the gear box through the overflow mouth simultaneously, does not cause the loss for gear oil lubricating system oil mass. The overflow pipeline comprises a bottom side joint 8 and an inner pipeline 5; the side joint 8 is arranged on the side surface of the lower sealing cover 6 so as to form a height difference with the lower sealing cover 6; the inner pipeline 5 is arranged inside the sealing cylinder 4 and is in interference fit with the lower sealing cover 6; the bottom of the inner pipe 5 communicates with the side connection 8 to ensure that excess gear oil can flow from the inner pipe 5 into the side connection 8 and out.
The lower part of the upper sealing cover 2 is provided with an annular groove which tightly clamps the upper end part of the sealing cylinder 4. The upper part of the lower sealing cover 6 is provided with an annular groove for clamping the lower end part of the sealing cylinder 4.
During installation, the upper sealing cover 2 is arranged at the upper end of the sealing cylinder 4 in an interference fit manner, and the lower sealing cover 6 is arranged at the lower end of the sealing cylinder 4 in an interference fit manner.
The contact positions of the sealing cylinder 4 and the upper sealing cover 2 and the lower sealing cover 6 are provided with sealing rings 9, and the contact positions of the sealing cylinder 4 and the upper sealing cover 2 and the lower sealing cover 6 are sealed through the sealing rings 9. The upper sealing cover 2 and the lower sealing cover 6 are fixed with the sealing cylinder 4 through four bolts 10, although the present invention is not limited thereto, and the number of the bolts 10 is not limited; the bolt 10 passes the lower sealing cover 6, the sealing cylinder 4 and the upper sealing cover 2 and is fixed through the flat washer 13, the elastic washer 12 and the nut 11, of course, the utility model discloses not limited to this connection mode, as long as can fix the lower sealing cover 6 and the upper sealing cover 2 on the sealing cylinder 4, guarantee sealed effect simultaneously.
The sealing cylinder 4 is made of transparent material or is provided with an observation window, so that the flow speed of the liquid can be observed, and the basis for adjusting the inlet flow is provided. Of course, the present invention is not limited to this, and a flow meter may be provided at the inlet and outlet.
The utility model discloses embodiment 1's theory of operation:
the sealing cylinder 4 is made of transparent material or provided with an observation window, so that when liquid enters the sealing cylinder 4 from the inlet of the upper connector 1 through the inlet pipe 3, the flow speed of the liquid can be observed; the liquid passes through the channel of the lower sealing cover 6 and flows out from the outlet of the lower joint 7. When the cavity connected with the lower joint 7 is filled with liquid, namely the lower joint 7 does not need to output flow, the liquid level in the sealing cylinder 4 can be observed to gradually rise; when the liquid level rises to submerge the inner pipeline 5, the liquid can be observed to pass through the inner pipeline 5, enter the channel on the lower sealing cover 6 and flow out from the overflow port of the bottom side joint 8, namely the redundant liquid can overflow from the bottom side joint 8.
Example 2:
referring to fig. 3 and 4, the overflow line in embodiment 1 may be a middle side joint 14, and the middle side joint 14 is disposed at the middle upper portion of the sealing cylinder 4 and communicates with the inside of the sealing cylinder 4. Therefore, the original two structures of the bottom side joint 8 and the inner pipeline 5 are changed into one structure, the structure is simpler, and the sealing effect is better than that of the former structure.
The utility model discloses an embodiment 2's theory of operation:
the sealing cylinder 4 is made of transparent material or provided with an observation window, so that when liquid enters the sealing cylinder 4 from the inlet of the upper connector 1 through the inlet pipe 3, the flow speed of the liquid can be observed; the liquid passes through the channel of the lower sealing cover 6 and flows out from the outlet of the lower joint 7. When the cavity connected with the lower joint 7 is filled with liquid, namely the lower joint 7 does not need to output flow, the liquid level in the sealing cylinder 4 can be observed to gradually rise; when the liquid level rises to a level that is not above the middle side joint 14 of the side wall of the sealing cylinder 4, it can be observed that the liquid flows out from the middle side joint 14 through the middle side joint 14 of the side wall of the sealing cylinder 4, i.e. the excess liquid can overflow from the middle side joint 14.
The utility model discloses still relate to a main shaft upper end and have the top of the sealed burette device of pressure-fired and drive, top drive main shaft upper end is equipped with and contains foretell burette assembly, and wherein the burette assembly can drive the gear oil of forcing gear oil lubrication system with current top and introduce main shaft upper end seal structure, and unnecessary gear oil can spill over and get into in the gear box.
To sum up, the utility model relates to a be used for top to drive sealed burette assembly of main shaft upper end pressure-fired, sealed section of thick bamboo 4 is transparent material or sets up the observation window, can observe liquid stream, liquid level in the sealed section of thick bamboo, and can provide the foundation of adjusting inlet tube 3 flow through the liquid stream size of observing inlet tube 3, when the export does not need flow output simultaneously, unnecessary flow can be followed the overflow mouth that spills over the pipeline and flowed.
The utility model discloses still include one kind and drive the top that main shaft upper end was equipped with the burette assembly on the top and drive, according to the flow of burette assembly inlet tube 3, can adjust the top and drive the sealed volume of getting oil of main shaft upper end pressure-fired, ensure that it does not influence the top and drive current forced gear oil lubricating system's pressure and flow. Meanwhile, redundant gear oil can flow back to the gear box through an overflow port of the overflow pipeline, and loss of oil quantity of the gear oil lubricating system is avoided.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a be used for top to drive main shaft upper end pressure-fired seal's burette assembly, the bell jar sets up and drives main shaft upper end on the top, fixes in gear box lid top, burette assembly set up in top drive main shaft upper end the bell jar top, its characterized in that:
the dropper assembly comprises a lower connector (7), an upper connector (1), a lower sealing cover (6), a sealing barrel (4), an inlet pipe (3), an upper sealing cover (2) and an overflow pipeline;
the lower sealing cover (6) and the upper sealing cover (2) are respectively sealed at the lower port and the upper port of the sealing cylinder (4); the upper connector (1) is arranged at the upper part of the upper sealing cover (2), the inlet pipe (3) is in interference fit with the upper sealing cover (2), and the inlet pipe (3) is arranged inside the sealing cylinder (4) and communicated with the upper connector (1); a lower joint (7) is arranged at the bottom of the lower sealing cover (6) and is communicated with the sealing cylinder (4); and an overflow pipeline is also arranged on the sealing barrel (4).
2. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: the overflow pipeline comprises a bottom side joint (8) and an inner pipeline (5); the side joint (8) is arranged on the side surface of the lower sealing cover (6); the inner pipeline (5) is arranged in the sealing cylinder (4) and is in interference fit with the lower sealing cover (6); the bottom of the inner pipeline (5) is communicated with the side joint (8).
3. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: the overflow pipeline is a middle side joint (14), and the middle side joint (14) is arranged at the middle upper part of the sealing barrel (4) and is communicated with the inside of the sealing barrel (4).
4. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: and the lower part of the upper sealing cover (2) is provided with an annular groove, and the annular groove tightly clamps the upper end part of the sealing cylinder (4).
5. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: the upper part of the lower sealing cover (6) is provided with an annular groove for clamping the lower end part of the sealing cylinder (4).
6. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: and a sealing ring (9) is arranged at the contact position of the sealing cylinder (4) and the upper sealing cover (2) and the lower sealing cover (6).
7. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: the upper sealing cover (2) and the lower sealing cover (6) are fixed with the sealing cylinder (4) through a plurality of bolts (10).
8. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 7, wherein: the bolt (10) penetrates through the lower sealing cover (6), the sealing cylinder (4) and the upper sealing cover (2) and is fixed through a flat gasket (13), an elastic gasket (12) and a nut (11).
9. The drop tube assembly for a top drive spindle upper end micro positive pressure seal as claimed in claim 1, wherein: the sealing cylinder (4) is made of transparent materials or provided with an observation window.
10. The utility model provides a top of main shaft upper end has a burette device of pressure-fired seal drives which characterized in that: the upper end of the top drive main shaft is provided with a dropper assembly comprising the dropper of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021578383.8U CN213176750U (en) | 2020-08-03 | 2020-08-03 | Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021578383.8U CN213176750U (en) | 2020-08-03 | 2020-08-03 | Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213176750U true CN213176750U (en) | 2021-05-11 |
Family
ID=75799154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021578383.8U Active CN213176750U (en) | 2020-08-03 | 2020-08-03 | Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213176750U (en) |
-
2020
- 2020-08-03 CN CN202021578383.8U patent/CN213176750U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213176750U (en) | Dropper assembly for top drive spindle upper end micro-positive pressure sealing and top drive | |
| CN216554991U (en) | Bearing lubricating grease secondary distribution system and bearing automatic grease changing system | |
| CN112013100B (en) | Micro-positive pressure sealing structure at upper end of top drive spindle and micro-positive pressure establishing method | |
| CN213870259U (en) | Three-screw pump | |
| CN210715607U (en) | Sealing device of air conditioner refrigeration compressor | |
| CN212408679U (en) | Underwater guide wheel | |
| CN213175597U (en) | Slurry collecting basin for sealing upper end of top drive main shaft, sealing device and top drive | |
| CN209725534U (en) | A kind of sealing metal ring pads | |
| CN207892880U (en) | The spiral sealing device of vertical long pump for liquid salts | |
| CN208041395U (en) | A kind of high pressure low speed rotation connector | |
| CN217632243U (en) | Visual mud sealing system for top drive | |
| CN217463727U (en) | Cooling pipe joint device with leakage port | |
| CN215427592U (en) | Sealing and lubricating device for secondary filter screen | |
| CN212001397U (en) | Automatic water pressure regulating equipment | |
| CN201512602U (en) | Single crystal furnace | |
| CN206206139U (en) | A kind of vertical pumping set holder device with sealing function | |
| CN115435229B (en) | Heavy pressure accumulating float valve type automatic oil drain device | |
| CN212805208U (en) | Machine pump conventional oil leakage-proof auxiliary inspection device | |
| CN209548770U (en) | Inclined plate oil skimmer clean water chamber oil-collecting device | |
| CN217683181U (en) | Automatic discharging equipment of large-scale reducing gear box exosmosis lubricating oil | |
| CN220891069U (en) | Sealing structure of top drive main shaft upper end and top drive with sealing structure | |
| CN219975313U (en) | Vertical speed reducer oil gas discharging device | |
| CN214616393U (en) | Packing box of producing well area polished rod lubrication pool | |
| CN209818282U (en) | Seal box assembly convenient to plunger packing leaks harmless recovery of liquid | |
| CN218378927U (en) | Adjustable automatic oil-supplementing cup for lubricating oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 328, Haishunde building, A1 Donghuan North Road, Daxing Economic and Technological Development Zone, Beijing 100176 Patentee after: Beijing Jiejie West Technology Co.,Ltd. Address before: Room 328, Haishunde building, A1 Donghuan North Road, Daxing Economic and Technological Development Zone, Beijing 100176 Patentee before: Beijing Jiejiexi Petroleum Equipment Co.,Ltd. |