CN211329846U - Hydraulic driving type drilling fluid centrifugal machine - Google Patents
Hydraulic driving type drilling fluid centrifugal machine Download PDFInfo
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- CN211329846U CN211329846U CN201921896843.9U CN201921896843U CN211329846U CN 211329846 U CN211329846 U CN 211329846U CN 201921896843 U CN201921896843 U CN 201921896843U CN 211329846 U CN211329846 U CN 211329846U
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Abstract
The utility model relates to a hydraulic drive formula drilling fluid centrifuge, including spiral, blade, rotary drum, main motor, hydraulic pressure differential mechanism, hydraulic power unit and automatic control instrument system. The automatic control instrument system can automatically control the flow of the hydraulic differential according to the comparison between the detected system pressure and the set pressure value, and then control the rotating speed of the screw, thereby changing the differential rotating speed. The differential rotation speed is only related to the rotation speed of the hydraulic differential and the rotation speed of the hydraulic pump station, and is unrelated to the rotation speed of a rotary drum of the centrifuge, so that the full-frequency stepless adjustment of the differential rotation speed for pushing material and outputting constant torque can be realized, the adaptability to material change is strong, the automation degree is high, the solid-liquid separation effect is good, and the slag removal is convenient, safe and reliable.
Description
Technical Field
The utility model relates to an oil drilling equipment field especially relates to a hydraulic drive formula drilling fluid centrifuge of drilling fluid purification usefulness.
Background
In the drilling fluid solid phase control five-stage purification system, after drilling fluid mud is treated by a vibrating screen, a sand remover and a mud remover, a large amount of harmful solid phase particles within 44 mu m are still contained, the harmful solid phase particles are mutually ground in the drilling process, the density and viscosity of the drilling fluid are increased, and meanwhile, the harmful solid phase particles moving at high speed cause mechanical severe abrasion and are very harmful to the drilling operation. The medium-speed centrifugal machine and the high-speed centrifugal machine can purify harmful solid-phase particles within 44 mu m in drilling fluid slurry, and play a very key role in a drilling fluid solid control five-level purification system.
The horizontal screw centrifuge is a machine for separating suspension by centrifugal sedimentation, and has the function of separating the suspension containing fine particles into relatively clean liquid and solid sludge through solid-liquid separation in a drilling fluid solid phase control purification system. The differential is an important component in the horizontal screw centrifuge, and determines the differential rotation speed between the rotary drum and the screw, and further determines the separation effect of the horizontal screw centrifuge.
The differential system of the medium-speed and high-speed centrifuges selected by the traditional solid control process is a mechanical cycloid or planetary gear differential, although the common mechanical differential has low cost and is convenient to install, the differential rotation speed of the mechanical differential is determined by the rotation speeds of the rotary drum and the screw and the differential ratio of the differential (differential rotation speed = (rotary drum rotation speed-spiral rotation speed)/differential ratio), and the differential rotation speed and the rotary drum rotation speed cannot be independently adjusted. And the centrifugal machine of the mechanical differential mechanism is not easy to realize automatic control. More importantly, in the construction process of the high-density drilling fluid, a large amount of barite needs to be reserved in the drilling fluid when the centrifuge is used for processing because the specific gravity of the drilling fluid is high, and the original mechanical centrifuge for the drilling fluid cannot achieve a good separation effect.
SUMMERY OF THE UTILITY MODEL
To above-mentioned prior art's shortcoming or not enough, the to-be-solved technical problem of the utility model is to provide a can be according to the poor rotational speed of demand independent regulation to the hydraulic drive formula drilling fluid centrifuge of the drilling fluid purification demand of adaptation various different concentrations, and the poor rotational speed of ability automatic control.
In order to solve the above technical problem, the utility model discloses have following constitution:
the hydraulic drive type drilling fluid centrifugal machine comprises a screw horizontally arranged on a rack, blades arranged on the screw, a rotary drum sleeved outside the screw and the blades, a main motor, a hydraulic differential, a hydraulic pump station and an automatic control instrument system; the spiral is a cylinder, a liquid inlet is formed in the wall of the cylinder, a feeding pipe is installed in the cylinder, and blades are axially and uniformly distributed on the outer surface of the spiral; the feeding pipe is a hollow thick-wall long pipe, and the drilling fluid enters the spiral inner cavity from the middle of the feeding pipe and then enters the main inner cavity between the spiral and the rotary drum through the liquid inlet; the rotary drum is in a thin-wall cylindrical shape, the shape of the rotary drum is that a section of cone is connected with a section of cylinder, the excircle of the conical small-end cylinder wall of the rotary drum is provided with a slag discharge port, the large end of the rotary drum is connected with a large flange, the large flange is provided with a liquid outlet and is connected with a machine head flange, and the machine head flange is connected with a hydraulic differential shell; the hydraulic differential mechanism is arranged on the outer side of the large end of the rotary drum, the input end of the hydraulic differential mechanism is connected with the screw, the hydraulic pump station drives the screw to rotate through the hydraulic differential mechanism, and the main motor drives the shell of the hydraulic differential mechanism through the transmission mechanism so as to drive the rotary drum to rotate; the rotary drum and the spiral rotate coaxially in the same direction at high speed, but have different rotating speeds, and the rotating speed of the spiral is less than that of the rotary drum; the automatic control instrument system is connected to an oil circuit of the hydraulic differential mechanism and the hydraulic pump station, and when the automatic control instrument system detects that the system pressure exceeds a first set value, the flow of the hydraulic differential mechanism is automatically adjusted, the differential rotation speed of the centrifugal machine is improved, and the material pushing speed is accelerated; if the system pressure continues to rise, and when the system pressure reaches a second set value, the automatic control instrument system can automatically close the feeding pipe; if the system pressure continues to rise to reach a third set value, automatically controlling the instrument system to automatically cut off the power supply and stop the instrument system; if the system pressure continues to rise to reach a fourth set value, a safety valve arranged on an oil pipeline between the hydraulic differential mechanism and the hydraulic pump station is automatically opened, and the differential rotation speed of the centrifugal machine is zero; the first set value is a system pressure value under the condition of material blockage tendency, the second set value is a system pressure value under the condition of preliminary material blockage, the third set value is a system pressure value under the condition of medium material blockage, and the fourth set value is a system pressure value under the condition of serious material blockage.
The two ends of the rotary drum are supported by hydraulic bearings.
The blades are double-lead helical blades.
A replaceable hard alloy sleeve is additionally arranged at a slag discharge port of the rotary drum.
And high-hardness tungsten carbide hard alloy plasma surfacing is adopted between the blade and the spiral.
The device also comprises a housing, wherein a discharge barrel is arranged at the position below the housing corresponding to the slag discharge port of the rotary drum, and a liquid discharge barrel is arranged at the right side below the housing.
Compared with the prior art, the utility model has the advantages of:
in the high density drilling fluid work progress, because of drilling fluid proportion is higher, need remain a large amount of barite in the drilling fluid during centrifuge handles, mechanical type drilling fluid centrifuge can't reach good separation effect, and hydraulic pressure centrifuge is two different independent systems because poor rotational speed and rotary drum rotational speed, can select suitable poor rotational speed and rotary drum rotational speed under the state of constant torque output, when keeping barite in the drilling fluid, gets rid of the harmful solid phase granule in the drilling fluid. Particularly, in the drilling process of a horizontal well, harmful solid-phase particles in the drilling fluid are small in particle size, the drilling fluid is high in viscosity, the free settling speed of the solid-phase particles is low, the existing centrifugal machine is poor in separation effect and even has no separation effect, the hydraulic centrifugal machine is high in rotating speed, large in pushing torque and wide in differential rotating speed range (1 RPM-50 RPM), and harmful fine particles in the drilling fluid can be effectively removed.
The utility model discloses use hydraulic pressure differential mechanism, automatic control instrument system can automatic control hydraulic pressure differential mechanism's flow according to the system pressure that detects and the comparison of settlement pressure value, then the rotational speed of control spiral to change poor rotational speed. Therefore, the centrifuge of the utility model, on one hand, the automatic control instrument system can react under the condition of material blockage with different degrees, thereby ensuring the safe operation of the machine; on the other hand, the differential rotation speed is only related to the rotation speed of the hydraulic differential and the rotation speed of the hydraulic pump station and is unrelated to the rotation speed of a rotary drum of the centrifuge, so that the differential rotation speed is fully-frequency stepless adjustable, and the adaptability to material change is strong, wherein the centrifuge pushes materials to output constant torque in the process of separating and purifying harmful solid phases in the process of controlling the solid drilling fluid.
The hydraulic differential has a greater output torque than the mechanical differential.
The hydraulic driving type drilling fluid centrifugal machine is convenient for slag removal. Even if the machine is blocked due to too large concentration change and misoperation, the hydraulic differential can start the screw, and the screw and the blades 2 discharge accumulated materials blocked in the rotary drum like a conveyor before the rotary drum is not started. Therefore, the hydraulic differential mechanism is used, only the hydraulic device is started, the blocking fault is automatically eliminated, and the accumulated material is not required to be removed.
The utility model discloses a hydraulic drive formula drilling fluid centrifugal machine can replace an intermediate speed and a high-speed centrifuge, realizes a tractor serves two-purposes at the drilling fluid solid control in-process.
The hydraulic drive type drilling fluid centrifugal machine can realize automatic stepless adjustment of differential rotation speed, and is safe and reliable; and can be applied to various materials; and the slag is convenient to remove.
Drawings
FIG. 1: the utility model discloses a hydraulic drive formula drilling fluid centrifuge elevation.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
As shown in fig. 1, the utility model discloses a hydraulic drive formula drilling fluid centrifuge mainly includes spiral 1, blade 2, rotary drum 3, hydraulic differential mechanism 4, inlet pipe 5, for main motor 30 and the drive mechanism that rotary drum 3 provided power to and the hydraulic power unit 31 that links to each other with hydraulic differential mechanism 4 and connect the automatic control instrument system 32 in the hydraulic pressure pipeline.
As shown in fig. 1, the drum 3 is in a thin-walled cylinder shape, the shape of which is a section of cone connected with a section of cylinder, the drum small end shaft 7 is fixed on the small end face of the drum 3 to play a role of an end cover, and the frame 21 supports the journal part of the drum small end shaft 7 through the hydraulic bearing 25, thereby supporting the small end of the drum 3. The big end of the rotary drum 3 is connected with a big flange 16, the big flange 16 is connected with a machine head flange 15, the machine head flange 15 is connected with the shell of the hydraulic differential mechanism 4, and the main motor 30 drives the shell of the hydraulic differential mechanism 4 through a transmission mechanism so as to drive the rotary drum 3 to rotate. The frame 21 supports the journal portion of the large flange 16 through a fluid bearing 25, thereby supporting the large end of the rotary drum 3. The outer circle of the cylinder wall at the left side of the small end of the conical section of the rotary drum 3 is provided with a slag discharge port 12 for discharging solid-phase particles, and the flange surface of a large flange 16 at the right end of the rotary drum 3 is provided with a liquid outlet 13 for discharging waste liquid after solid-phase separation. The two ends of the rotary drum 3 are supported by hydraulic bearings 25, the hydraulic bearings 25 have small friction resistance and high mechanical efficiency, and excellent performance can be obtained within a large load-speed range.
The spiral 1 is a cylinder body with a horizontally arranged axis, and an internal hollow cavity body contains drilling fluid which is not subjected to solid-liquid phase separation. Spiral 1 left side is fixed with spiral support shaft 26, all opens corresponding round hole in spiral 1's the left end face and the spiral support shaft 26 for installation inlet pipe 5, inlet pipe 5 are a hollow thick wall long tube, and drilling fluid gets into 1 inner chamber of spiral from the centre of inlet pipe 5, and it has inlet 11 to open on the section of thick bamboo wall of spiral 1. The bearing arranged on the outer circumference of the circular shaft section of the spiral support shaft 26 is positioned in the inner hole of the rotary drum small end shaft 7, the left end of the spiral 1 is supported, the right end of the spiral 1 is connected with the input shaft of the hydraulic differential 4, and the hydraulic pump station 31 drives the hydraulic differential 4 to drive the spiral 1 to rotate. The blade 2 is installed to spiral 1 circumference outside, and blade 2 axial evenly distributed is in spiral 1's surface.
The rotary drum 3 is sleeved outside the screw 1 and the blades 2, and the axis of the rotary drum coincides with the axis of the screw 1. The rotary drum 3 and the left end face of the spiral 1 are sealed in a labyrinth manner, a main inner cavity 10 is formed in an area between the inner wall of the rotary drum 3 and the outer wall of the spiral 1, and the blades 2 are axially distributed in the main inner cavity 10. The outer edge of the blade 2 has a gap with the inner wall of the rotary drum 3, and the size of the blade 2 is determined according to the shape of the rotary drum 3.
The hydraulic differential 4 is arranged at the large end of the rotary drum 3, and the input shaft of the hydraulic differential 4 is connected with the right end of the screw 1. The hydraulic pump station 31 supplies high-pressure oil to the hydraulic differential 4 through an oil pipe, so that the hydraulic differential 4 rotates, and the screw 1 is driven to rotate. Meanwhile, the main motor 30 drives the housing of the hydraulic differential mechanism 4 through the transmission mechanism, so as to drive the rotary drum 3 to rotate, so that the spiral 1 and the rotary drum 3 coaxially rotate in the same direction at high speed, but the hydraulic differential mechanism 4 enables the spiral 1 and the rotary drum 3 to do differential motion, and the rotating speed of the spiral 1 is lower than that of the rotary drum 3.
The automatic control instrument system 32 is connected in the oil circuit of the hydraulic differential mechanism 4 and the hydraulic pump station 31, and automatically adjusts the flow of the hydraulic differential mechanism 4 according to the relation between the detected system pressure and the set pressure, thereby changing the differential rotation speed of the centrifuge. When the system pressure exceeds a first set value (namely, when the system pressure has a material blocking tendency), the differential rotation speed of the centrifugal machine is increased so as to accelerate the material pushing speed and reduce the material blocking tendency; if the system pressure continues to rise, when reaching a second set value (during initial material blockage), the automatic control instrument system 32 automatically closes the feeding pipe 5; if the system pressure continues to rise to reach a third set value (during medium material blockage), the automatic control instrument system 32 automatically cuts off the power supply and stops the machine; if the system pressure continues to rise and reaches a fourth set value (when material is seriously blocked), the safety valve is automatically opened, and the differential rotation speed of the centrifugal machine is zero. Through the complete set of automatic control, the centrifugal machine can work safely and reliably.
The sediment of the solid phase object of the hydraulic drive type drilling fluid centrifuge on the inner wall of the rotary drum 3 is realized by the relative movement rotation speed difference of the rotary drum 3 and the spiral 1, and the rotation speed difference is realized by a differential mechanism, so the differential mechanism is one of the most important components in a horizontal screw centrifuge.
The utility model discloses use hydraulic pressure differential mechanism 4, automatic control instrument system 32 can automatic control hydraulic pressure differential mechanism 4's flow according to the system pressure that detects and the comparison of settlement pressure value, then control spiral 1's rotational speed to change poor rotational speed. Therefore, the centrifuge of the utility model, on one hand, the automatic control instrument system 32 can react under the condition of material blockage with different degrees, thereby ensuring the safe operation of the machine; on the other hand, the differential rotation speed is only related to the rotation speed of the hydraulic differential mechanism 4 and the rotation speed of the hydraulic pump station 31 and is unrelated to the rotation speed of the rotary drum 3, so that the differential rotation speed full-frequency stepless adjustment of the centrifuge for pushing material and outputting constant torque in the process of separating and purifying harmful solid phases in the process of controlling the solid drilling fluid can be realized, and the adaptability to material change is strong.
When the hydraulic drive type drilling fluid centrifugal machine works, drilling fluid enters an inner cavity of the spiral 1 from the left end of the long tubular feeding pipe 5 and then enters a main inner cavity 10 through the liquid inlet 11, the rotary drum 3 and the spiral 1 rotate at high speed in the same direction and have a certain difference rotating speed, solid particles with large specific gravity are thrown away from an axis by centrifugal force and deposited on the inner wall of the rotary drum 3, namely, suspended solid particles in slurry are separated by utilizing the centrifugal sedimentation principle, meanwhile, the blades 2 rotate, the solid particles on the inner wall of the rotary drum 3 are pushed to the slag discharge port 12 on the left side of the conical small end of the rotary drum 3 and then are discharged from the discharge barrel 19 on. And the separated waste liquid is discharged from a liquid outlet 13 at the right side of the rotary drum 3 and a liquid outlet cylinder 20 on the housing 6. In the working process of the centrifugal machine, the automatic control instrument system 32 automatically adjusts the differential rotation speed according to the current solid-liquid phase proportion of the drilling fluid and the working condition of the centrifugal machine, so that the safe and reliable work of the machine is ensured.
Another important reason for using hydraulically driven drilling fluid centrifuges is the ease of slag removal. Even if the machine is blocked due to too large concentration change and misoperation, the hydraulic differential mechanism 4 can start the screw 1 before the rotary drum 3 is not started, and the screw 1 and the blades discharge accumulated materials blocked in the rotary drum 3 like a conveyor. Therefore, the hydraulic differential mechanism is used, only the hydraulic device is started, the blocking fault is automatically eliminated, and the accumulated material is not required to be removed.
In addition, the output torque of the hydraulic differential is greater than that of the mechanical differential.
The utility model discloses still include the housing 6 of outside installation, the essential element is all arranged in the housing 6. A discharge barrel 19 is arranged at the position corresponding to the slag discharge port 12 of the rotary drum 3 below the housing 6, and a liquid discharge barrel 20 is arranged at the right side below the housing 6 and used for discharging solid-phase particles and waste liquid respectively.
As shown in FIG. 1, the above components are supported by a frame 21, and a shock absorber is arranged below the frame 21.
The blades 2 adopt double-guide-distance blades, so that the slag discharge capacity of the equipment is effectively increased, and the production efficiency is high; the centrifugal separator has high separation capacity and wide separation particle size range, and plays an important role in reducing the load of the centrifugal separator, preventing overload fatigue operation of the centrifugal separator and preventing the centrifugal separator from being locked by a card machine.
High-hardness tungsten carbide hard alloy plasma surfacing is adopted between the blade 2 and the spiral 1, and the blade has high abrasion resistance. The rotary drum 3 is made of wear-resistant and corrosion-resistant stainless steel. A replaceable hard alloy sleeve is additionally arranged at the slag discharge port 12 of the rotary drum 3, the hardness reaches HRA92.5, and the wear-resistant and impact-resistant rotary drum is wear-resistant. The materials and the process used by the key components effectively prolong the service life of the equipment and reduce the maintenance cost.
The utility model discloses a hydraulic drive formula drilling fluid centrifugal machine can replace an intermediate speed and a high-speed centrifuge, realizes a tractor serves two-purposes at the drilling fluid solid control in-process.
The hydraulic drive type drilling fluid centrifugal machine can realize automatic stepless adjustment of differential rotation speed, and is safe and reliable; and can be applied to various materials; and the slag is convenient to remove.
In conclusion, in the construction process of the high-density drilling fluid, due to the fact that the specific gravity of the drilling fluid is high, a large amount of barite needs to be reserved in the drilling fluid when the centrifugal machine is used for processing, and due to the fact that the differential rotation speed and the rotary drum rotation speed are two different independent systems, the hydraulic centrifugal machine can select the proper differential rotation speed and the rotary drum rotation speed in the state of constant torque output, the barite in the drilling fluid is reserved, and meanwhile, harmful solid-phase particles in the drilling fluid are removed. Particularly, in the drilling process of a horizontal well, harmful solid-phase particles in the drilling fluid are small in particle size, the drilling fluid is high in viscosity, the free settling speed of the solid-phase particles is low, the existing centrifugal machine is poor in separation effect and even has no separation effect, the hydraulic centrifugal machine is high in rotating speed, large in pushing torque and wide in differential rotating speed range (1 RPM-50 RPM), and harmful fine particles in the drilling fluid can be effectively removed.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will understand that various combinations, modifications and equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of the technical solutions should be covered by the scope of the claims of the present invention.
Claims (6)
1. A hydraulic drive type drilling fluid centrifuge is characterized by comprising a spiral (1) horizontally arranged on a rack (21), blades (2) arranged on the spiral (1), a rotary drum (3) sleeved outside the spiral (1) and the blades (2), a main motor (30), a hydraulic differential (4), a hydraulic pump station (31) and an automatic control instrument system (32);
the spiral (1) is a cylinder, a liquid inlet (11) is formed in the wall of the cylinder, a feeding pipe (5) is installed in the cylinder, and the blades (2) are axially and uniformly distributed on the outer surface of the spiral (1); the feeding pipe (5) is a hollow thick-wall long pipe, and drilling fluid enters the inner cavity of the spiral (1) from the middle of the feeding pipe (5) and then enters the main inner cavity (10) between the spiral (1) and the rotary drum (3) through the liquid inlet (11);
the rotary drum (3) is in a thin-wall cylindrical shape, the shape of the rotary drum is that a section of cone is connected with a section of cylinder, a slag discharge port (12) is formed in the excircle of the cylindrical wall of the conical small end of the rotary drum (3), the large end of the rotary drum (3) is connected with a large flange (16), a liquid outlet (13) is formed in the large flange (16), the large flange (16) is connected with a machine head flange (15), and the machine head flange (15) is connected with the shell of the hydraulic differential (4);
the hydraulic differential (4) is arranged on the outer side of the large end of the rotary drum (3), the input end of the hydraulic differential (4) is connected with the spiral (1), the hydraulic pump station (31) drives the spiral (1) to rotate through the hydraulic differential (4), and the main motor (30) drives the shell of the hydraulic differential (4) through a transmission mechanism so as to drive the rotary drum (3) to rotate; the rotary drum (3) and the spiral (1) coaxially rotate in the same direction at a high speed, but have different rotating speeds, and the rotating speed of the spiral (1) is less than that of the rotary drum (3);
the automatic control instrument system (32) is connected to oil paths of the hydraulic differential (4) and the hydraulic pump station (31), and when the automatic control instrument system (32) detects that the system pressure exceeds a first set value, the flow of the hydraulic differential (4) is automatically adjusted, the differential rotation speed of the centrifugal machine is improved, and the material pushing speed is increased; if the system pressure continues to rise, and when a second set value is reached, the automatic control instrument system (32) automatically closes the feeding pipe (5); if the system pressure continues to rise and reaches a third set value, the automatic control instrument system (32) automatically cuts off the power supply and stops the machine; when the system pressure continues to rise and reaches a fourth set value, a safety valve of the automatic control instrument system (32) is automatically opened, and the differential rotation speed of the centrifugal machine is zero;
the first set value is a system pressure value under the condition of material blockage tendency, the second set value is a system pressure value under the condition of preliminary material blockage, the third set value is a system pressure value under the condition of medium material blockage, and the fourth set value is a system pressure value under the condition of serious material blockage.
2. The hydraulically driven drilling fluid centrifuge according to claim 1, characterized in that the bowl (3) is supported by hydraulic bearings (25) at both ends.
3. The hydraulically driven drilling fluid centrifuge of claim 1, characterized in that the blades (2) are double lead helical blades.
4. The hydraulically driven drilling fluid centrifuge as claimed in claim 1, characterized in that a replaceable cemented carbide sleeve is added at the slag discharge opening (12) of the bowl (3).
5. The hydraulically driven drilling fluid centrifuge according to claim 1, characterized in that high hardness tungsten carbide cemented carbide plasma surfacing is used between the blades (2) and the helix (1).
6. The hydraulically driven drilling fluid centrifuge as claimed in claim 1, characterized in that further comprises a housing (6), a discharge barrel (19) is arranged below the housing (6) at a position corresponding to the slag discharge opening (12) of the rotary drum (3), and a discharge barrel (20) is arranged below the housing (6) at the right side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921896843.9U CN211329846U (en) | 2019-11-06 | 2019-11-06 | Hydraulic driving type drilling fluid centrifugal machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921896843.9U CN211329846U (en) | 2019-11-06 | 2019-11-06 | Hydraulic driving type drilling fluid centrifugal machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935912A (en) * | 2021-02-04 | 2021-06-11 | 重庆工业职业技术学院 | Machine tool chip removal cleaning device for numerical control machine tool |
| CN114308416A (en) * | 2020-09-29 | 2022-04-12 | 中石化石油工程技术服务有限公司 | Intelligent control device and method for horizontal screw centrifuge |
| CN117138977A (en) * | 2023-10-27 | 2023-12-01 | 河南中正石油起重机械有限公司 | Petroleum exploitation filtering centrifuge capable of achieving spiral unloading |
| CN119216120A (en) * | 2024-12-03 | 2024-12-31 | 山东开泰抛丸机械股份有限公司 | A centrifuge and its control system |
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2019
- 2019-11-06 CN CN201921896843.9U patent/CN211329846U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114308416A (en) * | 2020-09-29 | 2022-04-12 | 中石化石油工程技术服务有限公司 | Intelligent control device and method for horizontal screw centrifuge |
| CN112935912A (en) * | 2021-02-04 | 2021-06-11 | 重庆工业职业技术学院 | Machine tool chip removal cleaning device for numerical control machine tool |
| CN117138977A (en) * | 2023-10-27 | 2023-12-01 | 河南中正石油起重机械有限公司 | Petroleum exploitation filtering centrifuge capable of achieving spiral unloading |
| CN117138977B (en) * | 2023-10-27 | 2024-01-16 | 河南中正石油起重机械有限公司 | Petroleum exploitation filtering centrifuge capable of achieving spiral unloading |
| CN119216120A (en) * | 2024-12-03 | 2024-12-31 | 山东开泰抛丸机械股份有限公司 | A centrifuge and its control system |
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