CN109226113B - Hydraulic pipeline flushing oil supply channel and flow control method thereof - Google Patents
Hydraulic pipeline flushing oil supply channel and flow control method thereof Download PDFInfo
- Publication number
- CN109226113B CN109226113B CN201811226981.6A CN201811226981A CN109226113B CN 109226113 B CN109226113 B CN 109226113B CN 201811226981 A CN201811226981 A CN 201811226981A CN 109226113 B CN109226113 B CN 109226113B
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- oil
- valve
- overflow valve
- overflow
- pipeline
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 181
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 description 9
- 239000000356 contaminant Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic pipeline flushing oil supply channel and a flow control method thereof, belonging to the field of hydraulic pipeline flushing; the hydraulic oil pump further comprises two oil pump devices, a first control valve assembly, a second control valve assembly and an oil outlet cylinder. Each oil pump device is provided with two oil pumping pipelines, and the four oil pumping pipelines are respectively connected with a first overflow valve, a second overflow valve, a third overflow valve and a fourth overflow valve, and can control the hydraulic oil forming various flow and various pressure combinations to flush the pipelines by controlling the opening of different channels.
Description
Technical Field
The invention relates to the field of flushing of hydraulic pipelines, in particular to a flushing oil supply channel of a hydraulic pipeline and a flow control method thereof.
Background
In the construction of the industrial equipment hydraulic system and the lubricating oil lubrication system, after the system pipeline is installed, the system pipeline is required to be circularly flushed by oil, so that the cleanliness of the inner wall of the pipeline reaches the design and regulation level and can be put into use. In the construction of hydraulic systems and lubricating oil lubrication systems, the cyclic flushing of oil pipelines is one of the important procedures. It is time-consuming and laborious and has been of great interest to the skilled person.
The pollution level of the inner cavity of a hydraulic and lubricating oil pipeline specified by the current national standard of metallurgical machinery hydraulic, lubricating and pneumatic equipment engineering installation acceptance Specification GB50387-2006 adopts the three-level particle concentration code level of the standard GB/T14039-2002 of the pollution level code of solid particles of hydraulic transmission oil. I.e. by particle size classification, a criterion of particle count particle classification is applied. In an actual cyclic flushing, it is not possible to filter out the contaminant particles in one cycle or in several cycles, whatever the precision of the filter device used. And the pollution particles are gradually filtered out and reduced after a plurality of cycles until the specified requirement is met. Therefore, the process of circulating flushing can be said to be a process of purifying the circulating oil. The flushing process for the open-cycle flushing oil supply channel is a process for cleaning the flushing oil of a tank, which is a relatively long period.
In theory, the liquid flows in the pipe, and as long as the reynolds number reaches 2300 (in a turbulent state), the contaminant particles adhering to the inner wall of the pipe can be removed. In practice, the contaminant particles adhering to the inner wall of the pipe have a certain adhesion to the inner wall of the pipe and must be removed under a certain flushing force. Thus, increasing the flush flow rate (typically an empirical value of 5-10 m/s for a calculated flush flow rate, even higher) is one of the key points for increasing the flush efficiency.
The flushing of different pipelines needs to be carried out by adopting different flow rates and different pressures, and the existing hydraulic pipeline flushing equipment is not convenient for controlling the flow rates.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide a flushing oil supply channel of a hydraulic pipeline and a flow control method thereof, wherein the flushing oil supply channel is arranged in different channels through the combined use of a plurality of overflow valves, and the flushing flow and pressure can be better regulated through the opening of the different channels.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a flushing oil supply channel of a hydraulic pipeline, which comprises an oil tank, wherein antiwear hydraulic oil is arranged in the oil tank; the hydraulic oil pump further comprises two oil pump devices, a first control valve assembly, a second control valve assembly and an oil outlet cylinder; each oil pump device is provided with two oil pumping pipelines, the first control valve component and the second control valve component are respectively connected with the oil pumping pipelines of the two oil pump devices, the first control valve component is provided with a first overflow valve element which is connected with one oil pumping pipeline, the first control valve component is also provided with a second overflow valve element which is connected with the other oil pumping pipeline, and the first control valve component is provided with a first oil outlet pipeline which is connected with an oil outlet cylinder.
The second control valve component is provided with a third overflow valve element which is connected with one oil pumping pipeline, the second control valve component is also provided with a fourth overflow valve element which is connected with the other oil pumping pipeline, and the second control valve component is provided with a second oil outlet pipeline which is connected with the oil outlet cylinder.
The oil outlet cylinder is provided with two oil outlet ports, and the oil outlet ports are provided with high-pressure ball valves.
The preferable technical scheme of the invention is that the first overflow valve and the third overflow valve are electromagnetic overflow valves, and overflow pipelines are arranged on the first overflow valve and the third overflow valve and are connected with the oil tank.
The preferable technical scheme of the invention is that the second overflow valve consists of a proportional overflow valve and a pilot overflow valve; one end of the proportional overflow valve is connected with the pilot end of the pilot overflow valve, and the overflow ends of the proportional overflow valve and the pilot overflow valve are connected with the oil tank through overflow pipelines.
The fourth overflow valve is composed of an electromagnetic directional valve, a first overflow valve and a second overflow valve, two ports of the electromagnetic directional valve are respectively connected with the two overflow valves, and overflow ends of the electromagnetic directional valve and the two overflow valves are connected with an oil tank through overflow pipelines.
The preferable technical scheme of the invention is that the oil outlet ends of the first overflow valve element, the second overflow valve element, the third overflow valve element and the fourth overflow valve element are respectively provided with a one-way valve and a pressure detector, and the pressure detectors are positioned at the front ends of the one-way valves.
The preferable technical scheme of the invention is that the oil pumping pipelines are all provided with high-pressure oil filters.
The oil pump device comprises a motor, a duplex gear pump and two oil supply pipes, wherein butterfly valves are arranged on the two oil supply pipes;
one end of each oil supply pipe is connected with the oil tank, the other end of each oil supply pipe is connected with the duplex gear pump, the power output end of the motor is connected with the duplex gear pump, and the duplex gear pump is connected with the flow channel and the pressure channel.
A method of controlling the flow of a hydraulic conduit flushing oil supply passage, comprising the steps of:
A. selecting either one of the oil pump device connected with the first control valve assembly or the oil pump device connected with the second control valve assembly to be started, or simultaneously starting the two oil pump devices;
B. when an oil pump device connected with the first control valve assembly is started, either one of the first overflow valve member or the second overflow valve member is selected to be started, or the first overflow valve member and the second overflow valve member are simultaneously started;
when the oil pump device connected with the second control valve assembly is started, either the third overflow valve or the fourth overflow valve is selected to be started, or the third overflow valve and the fourth overflow valve are simultaneously started.
In the preferred technical scheme of the invention, in the step B, when the third overflow valve is opened, any one of the first overflow valve or the second overflow valve is selected to be opened.
In the preferred technical scheme of the invention, in the step B, the pressure of the second overflow valve is controlled to be continuously changed in an electric control mode.
The beneficial effects of the invention are as follows:
according to the flushing oil supply channel of the hydraulic pipeline and the flow control method thereof, provided by the invention, the pipeline can be controlled to be flushed by hydraulic oil which forms various flow and various pressure combinations through the combination arrangement of the two groups of oil pump devices and the first overflow valve, the second overflow valve, the third overflow valve and the fourth overflow valve.
Drawings
FIG. 1 is a schematic view of the overall structure provided in an embodiment of the present invention;
FIG. 2 is a schematic illustration of a first control valve assembly provided in an embodiment of the present invention;
FIG. 3 is a schematic illustration of a second control valve assembly provided in an embodiment of the present invention;
in the figure:
1. an oil pump device; 2. a first control valve assembly; 3. a second control valve assembly; 4. a cylinder is discharged; 5. an overflow pipe; 11. a motor; 12. a duplex gear pump; 13. an oil supply pipe; 14. butterfly valve; 15. an oil pumping pipeline; 16. a high pressure oil filter; 21. a first oil outlet pipe; 22. a second spill valve member; 221. a pilot relief valve; 222. a proportional overflow valve; 23. a first spill valve member; 24. a pressure detector; 25. a one-way valve; 31. a second oil outlet pipe; 32. a third spill valve member; 33. a fourth spill valve member; 331. a first overflow valve; 332. a second overflow valve; 333. an electromagnetic reversing valve; 41. an oil outlet port; 42. high pressure ball valve.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Example 1
As shown in fig. 1, 2 and 3, the hydraulic pipeline flushing oil supply channel provided in the embodiment comprises an oil tank, wherein antiwear hydraulic oil is arranged in the oil tank; also included are two oil pump devices 1, a first control valve assembly 2, a second control valve assembly 3, and an oil outlet cylinder 4. Each oil pump device 1 is provided with two oil pumping pipelines 15, the first control valve component 2 and the second control valve component 3 are respectively connected with the oil pumping pipelines 15 of the two oil pump devices 1, the first control valve component 2 is provided with a first overflow valve element 23 which is connected with one oil pumping pipeline 15, the first control valve component 2 is also provided with a second overflow valve element 22 which is connected with the other oil pumping pipeline 15, and the first control valve component 2 is provided with a first oil outlet pipeline 21 which is connected with the oil outlet cylinder 4. The high-pressure oil filters 16 are arranged on the oil pumping pipelines 15, so that impurities in the hydraulic oil can be filtered. The oil pump device 1 delivers hydraulic oil into the first control valve assembly 2 via two pump oil lines 15, which hydraulic oil is fed from the first oil outlet line 21 into the oil outlet cylinder 4 at different flow rates and pressures depending on the opening of the valves in the first control valve assembly 2.
Further, as shown in fig. 2, the first relief valve 23 is an electromagnetic relief valve of DBW908 type, and the opening and closing of the first relief valve are controlled by an electric control manner, so that the electromagnetic relief valve can stabilize the pressure at about 4MPa, and the first relief valve 23 is provided with a relief pipe 5 connected with the tank. The spilled hydraulic oil flows back to the tank again through the spilled conduit 5.
Further, as shown in fig. 3, the second relief valve element 22 is composed of a proportional relief valve 222 of DBEIX-1X type and a pilot relief valve 221 of DBW30 type; one end of the proportional relief valve 222 is connected with the pilot end of the pilot relief valve 221, the pressure of hydraulic oil can be regulated by regulating the proportional relief valve 222, meanwhile, the pilot relief valve 221 is arranged to enable the flow to be larger, and the relief ends of the proportional relief valve 222 and the pilot relief valve 221 are connected with an oil tank through relief pipelines 5. The overflowed hydraulic oil is conveyed back to the oil tank through an overflow pipeline 5.
The oil outlet ends of the first overflow valve member 23 and the second overflow valve member 22 are respectively provided with a check valve 25 with the model number of S30P1 and a pressure detector 24, the pressure detector 24 is positioned at the front end of the check valve 25, and the pressure detector 24 adopts a pressure gauge with the model number of YN 100. The check valve 25 can well avoid the oil backflow, and the pressure detector 24 is arranged to clearly see the pressure of the hydraulic oil output from the oil outlet pipeline.
As shown in fig. 1, the oil pump device 1 comprises a motor 11, a duplex gear pump 12 and two oil supply pipes 13, wherein the motor 11 is of model YE2-250M, and butterfly valves 14 are arranged on the two oil supply pipes 13; the butterfly valve 14 controls the passage of hydraulic oil from the tank to the gear pump. One end of each of the two oil supply pipes 13 is connected with an oil tank, the other end of each of the two oil supply pipes 13 is connected with a duplex gear pump 12, the power output end of the motor 11 is connected with the duplex gear pump 12, and the duplex gear pump 12 is connected with a flow channel and a pressure channel. The dual gear pump 12 sucks hydraulic oil out of the oil supply line 13 and presses it into the two oil pump lines 15.
In the present embodiment, only the oil pump device 1 connected to the first control valve assembly 2 is turned on, and by opening the first relief valve, hydraulic oil having a flushing pressure of 4MPa can be output from the first oil outlet pipe 21; closing the first overflow valve and opening the second overflow valve, and adjusting the proportional overflow valve 222 to obtain the flushing pressure with adjustable pressure of 0-8 MPa; simultaneously opening the first relief valve and the second relief valve, the flushing pressure of the hydraulic oil can be varied between 0-4MPa by adjusting the proportional relief valve 222.
Example two
The present embodiment differs from the first embodiment in that the oil pump device 1 connected to the second control valve assembly 3 is turned on.
The hydraulic pipeline flushing oil supply channel provided in the embodiment comprises an oil tank, wherein antiwear hydraulic oil is arranged in the oil tank; also included are two oil pump devices 1, a first control valve assembly 2, a second control valve assembly 3, and an oil outlet cylinder 4. Each oil pump device 1 is provided with two oil pumping pipelines 15, the first control valve assembly 2 and the second control valve assembly 3 are respectively connected with the oil pumping pipelines 15 of the two oil pump devices 1, the second control valve assembly 3 is provided with a third overflow valve element 32 which is connected with one oil pumping pipeline 15, the second control valve assembly 3 is also provided with a fourth overflow valve element 33 which is connected with the other oil pumping pipeline 15, and the second control valve assembly 3 is provided with a second oil outlet pipeline 31 which is connected with the oil outlet cylinder 4. The high-pressure oil filters 16 are arranged on the oil pumping pipelines 15, so that impurities in the hydraulic oil can be filtered. The oil pump device 1 delivers hydraulic oil into the second control valve assembly 3 via two pump oil lines 15, which hydraulic oil is fed from the second oil outlet line 31 into the oil outlet cylinder 4 at different flow rates and pressures depending on the opening of the valves in the second control valve assembly 3.
As shown in fig. 1, the oil cylinder 4 is provided with two oil outlet ports 41, and the high-pressure ball valve 42 is provided on the oil outlet ports 41. Hydraulic oil is gathered into the oil outlet cylinder 4 from the oil outlet pipeline, the pipeline to be washed is connected to the oil outlet port 41, and the high-pressure ball valve 42 is opened, so that the hydraulic oil can enter the pipeline to be washed for washing.
Further, as shown in fig. 3, the third relief valve 32 is an electromagnetic relief valve of DBW908 type, and the opening and closing of the third relief valve are controlled by an electric control manner, so that the electromagnetic relief valve can stabilize the pressure at about 4MPa, and the third relief valve 32 is provided with a relief pipe 5 connected to the tank. The spilled hydraulic oil flows back to the tank again through the spilled conduit 5.
Further, the fourth overflow valve 33 is composed of an electromagnetic directional valve 333, a first overflow valve 331 and a second overflow valve 332, two ports of the electromagnetic directional valve 333 are respectively connected with the two overflow valves, and overflow ends of the electromagnetic directional valve 333 and the two overflow valves are connected with the oil tank through overflow pipelines 5. When the first overflow valve 331 and the electromagnetic directional valve 333 are opened, the oil outlet pipeline can output stable flushing pressure of 8 MPa; when the third relief valve and the second relief valve 332 are opened, a stable large flow of hydraulic oil of 4MPa can be output through the oil outlet pipe.
The oil outlet ends of the third overflow valve element 32 and the fourth overflow valve element 33 are respectively provided with a check valve 25 with the model number of S30P1 and a pressure detector 24, the pressure detector 24 is positioned at the front end of the check valve 25, and the pressure detector 24 adopts a pressure gauge with the model number of YN 100. The check valve 25 can well avoid the oil backflow, and the pressure detector 24 is arranged to clearly see the pressure of the hydraulic oil output from the oil outlet pipeline.
As shown in fig. 1, further, the oil pump device 1 comprises a motor 11, a duplex gear pump 12 and two oil supply pipes 13, wherein the motor 11 is of model YE2-250M, and butterfly valves 14 are arranged on the two oil supply pipes 13; the butterfly valve 14 controls the passage of hydraulic oil from the tank to the gear pump. One end of each of the two oil supply pipes 13 is connected with an oil tank, the other end of each of the two oil supply pipes 13 is connected with a duplex gear pump 12, the power output end of the motor 11 is connected with the duplex gear pump 12, and the duplex gear pump 12 is connected with a flow channel and a pressure channel. The dual gear pump 12 sucks hydraulic oil out of the oil supply line 13 and presses it into the two oil pump lines 15.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The invention is not to be limited by the specific embodiments disclosed herein, and other embodiments are within the scope of the invention as defined by the claims of the present application.
Claims (5)
1. A flow control method for a flushing oil supply channel of a hydraulic pipeline is characterized by comprising the following steps of: the hydraulic pipeline flushing oil supply channel comprises an oil tank, and antiwear hydraulic oil is arranged in the oil tank; the method is characterized in that: the hydraulic oil pump further comprises two oil pump devices (1), a first control valve assembly (2), a second control valve assembly (3) and an oil outlet cylinder (4); the two oil pump devices (1) are respectively connected with the first control valve assembly (2) and the second control valve assembly (3), each oil pump device (1) is provided with two oil pumping pipelines (15), the first control valve assembly (2) is provided with a first overflow valve element (23) which is connected with one oil pumping pipeline (15), the first control valve assembly (2) is also provided with a second overflow valve element (22) which is connected with the other oil pumping pipeline (15), the first control valve assembly (2) is provided with a first oil outlet pipeline (21), and the first overflow valve element (23) and the second overflow valve element (22) are both connected with the oil outlet cylinder (4) through the first oil outlet pipeline (21); the second control valve assembly (3) is provided with a third overflow valve (32) and a fourth overflow valve (33), the third overflow valve (32) is connected with one oil pumping pipeline (15), the fourth overflow valve (33) is connected with the other oil pumping pipeline (15), the second control valve assembly (3) is provided with a second oil outlet pipeline (31), and the third overflow valve (32) and the fourth overflow valve (33) are connected with the oil outlet cylinder (4) through the second oil outlet pipeline (31); the oil outlet cylinder (4) is provided with at least one oil outlet port (41), and the oil outlet port (41) is provided with a high-pressure ball valve (42); the oil pump device (1) comprises a motor (11), a duplex gear pump (12) and two oil supply pipes (13), wherein butterfly valves (14) are arranged on the two oil supply pipes (13); one end of each of the two oil supply pipes (13) is connected with the oil tank, the other end of each of the two oil supply pipes (13) is connected with the duplex gear pump (12), the power output end of the motor (11) is connected with the duplex gear pump (12), and the duplex gear pumps (12) are connected with the flow channel and the pressure channel; the hydraulic pipeline flushing oil supply channel is arranged by combining two groups of oil pump devices, a first overflow valve, a second overflow valve, a third overflow valve and a fourth overflow valve, so that the pipeline can be controlled to be flushed by hydraulic oil with various flow and various pressure combinations; the first overflow valve (23) and the third overflow valve (32) are electromagnetic overflow valves, and the first overflow valve (23) and the third overflow valve (32) are respectively provided with an overflow pipeline (5) which is connected with the oil tank; the fourth overflow valve (33) consists of an electromagnetic directional valve (333), a first overflow valve (331) and a second overflow valve (332), two ports of the electromagnetic directional valve (333) are respectively connected with the two overflow valves, and overflow ends of the electromagnetic directional valve (333) and the two overflow valves are connected with the oil tank through overflow pipelines (5);
the method comprises the following steps: A. selecting either one of the oil pump device (1) connected with the first control valve assembly (2) or the oil pump device (1) connected with the second control valve assembly (3) to be started, or simultaneously starting the two oil pump devices (1); B. when an oil pump device (1) connected with a first control valve assembly (2) is started, either one of a first overflow valve element (23) or a second overflow valve element (22) is selected to be started, or the first overflow valve element (23) and the second overflow valve element (22) are simultaneously started; when an oil pump device (1) connected with a second control valve assembly (3) is started, either a third overflow valve element (32) or a fourth overflow valve element (33) is selected to be started, or the third overflow valve element (32) and the fourth overflow valve element (33) are simultaneously started; in the step B, when the third relief valve is opened, either one of the first relief valve (331) or the second relief valve (332) is selected to be opened.
2. The flow control method of the hydraulic line flushing oil supply passage according to claim 1, characterized in that: the second overflow valve (22) consists of a proportional overflow valve (222) and a pilot overflow valve (221); one end of the proportional relief valve (222) is connected with a pilot end of the pilot relief valve (221), and both the proportional relief valve (222) and the relief end of the pilot relief valve (221) are connected with the oil tank through a relief pipeline (5).
3. The flow control method of the hydraulic-pipe flushing oil supply passage according to claim 2, characterized in that: the oil outlet ends of the first overflow valve (23), the second overflow valve (22), the third overflow valve (32) and the fourth overflow valve (33) are respectively provided with a one-way valve (25) and a pressure detector (24), and the pressure detector (24) is positioned at the front end of the one-way valve (25).
4. The flow control method of the hydraulic-pipe flushing oil supply passage according to claim 2, characterized in that: the oil pumping pipelines (15) are provided with high-pressure oil filters (16).
5. A method of controlling the flow of a hydraulic line flushing oil supply passage according to any one of claims 1-4, characterized in that in step B, the second spill valve member (22) controls the pressure variation electronically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811226981.6A CN109226113B (en) | 2018-10-22 | 2018-10-22 | Hydraulic pipeline flushing oil supply channel and flow control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811226981.6A CN109226113B (en) | 2018-10-22 | 2018-10-22 | Hydraulic pipeline flushing oil supply channel and flow control method thereof |
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| CN109226113A CN109226113A (en) | 2019-01-18 |
| CN109226113B true CN109226113B (en) | 2024-02-20 |
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| CN110529442B (en) * | 2019-08-26 | 2020-09-11 | 哈尔滨工程大学 | Hydraulic system matched with piston mechanical fatigue test bed |
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| CN209035031U (en) * | 2018-10-22 | 2019-06-28 | 福建新继船舶服务有限公司 | A kind of hydraulic pipeline flushing oil supply gallery |
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| Title |
|---|
| 李海金等主编.《液压与气动技术》.北京航空航天大学出版社,2015,第34页. * |
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| CN109226113A (en) | 2019-01-18 |
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