CN113898622B - Pipeline connection and oil discharge method for hydraulic system of vertical shaft heading machine - Google Patents
Pipeline connection and oil discharge method for hydraulic system of vertical shaft heading machine Download PDFInfo
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- CN113898622B CN113898622B CN202111061794.9A CN202111061794A CN113898622B CN 113898622 B CN113898622 B CN 113898622B CN 202111061794 A CN202111061794 A CN 202111061794A CN 113898622 B CN113898622 B CN 113898622B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Types And Forms Of Lifts (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The patent introduces a hydraulic system pipeline connection and oil discharge method of a shaft heading machine, which comprises the following specific steps: step 1: two three-way ball valve valves C and valves D are correspondingly arranged on a first oil pipeline and a second oil pipeline at the outlet of a station of a hydraulic system pump station, and two three-way ball valve valves E and valves F are correspondingly arranged on the first oil pipeline and the second oil pipeline at the lower wellhead; step 2: stopping according to the descending depth; step 3: lengthening and connecting the first oil pipeline; step 4: lengthening the second oil pipeline; step 5: lengthening an oil return pipeline; step 6: exhausting the newly added pipeline; compared with a plurality of quick-change connectors in the prior art, the two groups of three-way ball valves are adopted, the connecting method is simple and quick, the connecting efficiency is improved, oil leakage points on the whole pipeline are reduced, and the production investment is reduced; oil leakage is avoided in the process of connecting the pipelines, and the stability and reliability of the operation of the whole machine of the vertical shaft heading machine are ensured.
Description
Technical Field
The invention belongs to the technical field of hydraulic equipment, and relates to a method for connecting and discharging oil of a hydraulic system of a vertical shaft heading machine.
Background
When some mechanical equipment is applied, the relative distance between the power source and the mechanical body is long, and the middle pipeline is long; when some of the working machines work, the power source keeps in-situ, the mechanical body works while advancing, and the distance between the mechanical body and the mechanical body is gradually increased; for example, when the shaft heading machine works, a hydraulic station serving as a power source does not move on the ground of a well, and the heading machine frame carries a cutterhead to tunnel downwards in the well; along with the increase of the well drilling depth, the length of the middle pipeline also needs to be increased; at present, for the working conditions that the distance between the power source and the mechanical body is long, the distance is continuously changed, and the pipeline is required to be frequently installed and disassembled, the most common method is to speed up the joint replacement between two hoses connected on the middle pipeline, and a pair of quick-change joints are correspondingly added for each hose connected; the connection mode not only is convenient to install, but also solves the problem of oil leakage during connection of pipelines, but also has the following problems: firstly, the cost of the quick-change connector is far higher than that of a common connector, and the overall cost of equipment is increased; secondly, the drift diameter of the quick-change connector is limited, DN50 and below are commonly used at home and abroad, and pipelines with larger drift diameters are required to be split into pipelines with smaller drift diameters in order to match the quick-change connector, so that the number of main pipelines is increased dramatically.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for connecting and discharging oil of a hydraulic system of a vertical shaft heading machine, which is simple and convenient to operate and reduces the equipment pipeline connection cost.
The technical scheme adopted by the invention is as follows:
a hydraulic system pipeline connection and oil discharge method of a shaft heading machine comprises the following specific steps:
step 1: two three-way ball valve valves C and D are correspondingly arranged on a first oil pipeline and a second oil pipeline at the outlet of a station of a hydraulic system pump station to form a first group of three-way ball valves; two three-way ball valve valves E and F are correspondingly arranged on a first oil pipeline and a second oil pipeline at the lower wellhead to form a second group of three-way ball valves; the valve C, the valve D, the valve E and the valve F are the same and comprise a main channel and an oil return channel, and handles of the two channels are not mutually associated; the oil return channels of the first group of three-way ball valves are communicated with an oil tank through an oil return pipeline; disconnecting an oil return port of an oil return channel of the second group of three-way ball valves from the outside, and waiting to be connected with an air source when needed;
step 2: when the vertical shaft heading machine works, the main channels of the two groups of three-way ball valves are all opened, the oil return channels are all closed, and the vertical shaft heading machine works normally and starts to tunnel downwards; stopping according to the descending depth, and performing lengthening connection and oil discharge of the first oil conveying pipeline, the second oil conveying pipeline and the oil return pipeline;
step 3: lengthening and connecting the first oil conveying pipeline: firstly, closing a main channel of a valve C on a first oil delivery pipeline, and opening an oil return channel; simultaneously opening a main channel and an oil return channel of a valve E on a first oil delivery pipeline; closing an oil return passage of a valve D on the second oil conveying pipeline; compressed air is introduced into the oil return channel of the valve E, and hydraulic oil in the upper pipeline part of the first oil conveying pipeline returns to the oil tank through the main channel of the valve E and the oil return channel of the valve C; after the oil in the first oil conveying pipeline is completely blown back by the oil, opening a joint at the rear end of the valve E, and adding a hose to complete lengthening of the first oil conveying pipeline;
step 4: lengthening and connecting the second oil pipeline: firstly, closing a main channel of the valve D and opening an oil return channel; simultaneously opening a main channel and an oil return channel of a valve F on the second oil delivery pipeline; closing an oil return passage of the valve C on the first oil conveying pipeline; compressed air is introduced into the oil return channel of the valve F, and hydraulic oil in the upper pipeline part of the second oil conveying pipeline returns to the oil tank through the main channel of the valve F and the oil return channel of the valve D; after the oil in the second oil pipeline is completely blown back by the oil liquid, opening a joint at the rear end of the main channel of the valve F, and adding a hose to lengthen the second oil pipeline;
step 5: lengthening an oil return pipeline: after the first oil pipeline and the second oil pipeline are drained, the oil in the oil return pipeline is returned to the oil tank in the process, and a hose is directly connected to the oil return pipeline at the wellhead;
step 6: exhausting the newly added pipeline: opening the main passages of the valves C, E and F, and closing the oil return passages of the valves C, E and F; closing the main channel of the valve D, opening the oil return channel of the valve D, controlling the pump station to output, enabling oil to pass through the main channels of the valve C and the valve E on the first oil conveying pipeline from the outlet of the pump station, entering the underground motor, entering the main channel of the valve F, entering the oil return channel of the valve D, returning to the oil tank, enabling the motor to continuously drive the hydraulic pump station to operate, enabling air mixed in the new connecting pipeline to enter the oil tank along with the oil, ascending to the upper part of the oil tank, and discharging from the inside of the oil.
Specifically, the hydraulic system comprises an oil tank, a motor, a pump station, a flushing valve and a motor; the motor provides power for the pump station, the pump station is communicated with an oil outlet of the oil tank, two paths of oil pipelines of the pump station are connected with the flushing valve group, the flushing valve group is connected with the underground motor through two groups of three-way ball valves, and an oil return port of the motor is connected with an oil return port of the oil tank through an oil return pipeline.
Specifically, in the step 6, an oil return channel of the valve D is opened, the oil return opening of the valve D is adjusted according to the actual oil return pressure, and a pump station is controlled to output according to 10% -30% of the total pump displacement.
By adopting the technical scheme, the invention has the following advantages:
compared with a plurality of quick-change connectors in the prior art, the two groups of three-way ball valves are adopted, the connecting method is simple and quick, the connecting efficiency is improved, oil leakage points on the whole pipeline are reduced, and the production investment is reduced; oil leakage is avoided in the process of connecting the pipelines, and the stability and reliability of the operation of the whole machine of the vertical shaft heading machine are ensured.
Drawings
Fig. 1 is a schematic connection diagram of a hydraulic system of the present invention.
In the figure: 1-oil tank, 2-motor, 3-pump station, 4-flushing valve, 5-valve C, 6-valve D, 7-valve E, 8-valve F, 9-motor, A-first oil pipeline, B-second oil pipeline, T-oil return pipeline.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention, and the purpose of the present invention is to protect all technical improvements within the scope of the present invention.
The specific implementation mode is as follows:
in combination with the method for connecting and discharging oil of the pipeline of the hydraulic system of the vertical shaft heading machine shown in fig. 1, the hydraulic system comprises an oil tank 1, a motor 2, a pump station 3, a flushing valve 4 and a motor 9; the motor 2 provides power for the pump station 3, the pump station 3 is communicated with an oil outlet of the oil tank 1, two paths of oil pipelines of the pump station 3 are connected with the flushing valve 4, meanwhile, the flushing valve 4 is connected with the underground motor 9 through two groups of three-way ball valves, and an oil return port of the motor 9 is connected with an oil return port of the oil tank 1 through an oil return pipeline T; the method comprises the following specific steps:
step 1: two three-way ball valve valves C5 and D6 are correspondingly arranged on a first oil pipeline A and a second oil pipeline B at the outlet in a station of a hydraulic system pump station 3 to form a first group of three-way ball valves; two three-way ball valve valves E7 and F8 are correspondingly arranged on a first oil pipeline A and a second oil pipeline B at the lower wellhead to form a second group of two three-way ball valves; the valve C5, the valve D6, the valve E7 and the valve F8 are the same and comprise a main channel and an oil return channel, and handles of the two channels are not mutually associated; the main channel of the valve C5 is A3 to A4, and the oil return port is T5; the main channel of the valve D6 is B3 to B4, and the oil return port is T6; the main channel of the valve E7 is A5 to A6, and the oil return port is T7; the main channel of the valve F8 is B5 to B6, and the oil return port is T8; the oil return ports T5 and T6 of the oil return channels of the first group of three-way ball valves are communicated with the oil tank through the oil return pipeline T; the oil return ports T7 and T8 of the oil return channels of the second group of three-way ball valves are disconnected from the outside, and the air source is waited to be connected when needed.
Step 2: when the vertical shaft heading machine works, the main channels of the two groups of three-way ball valves are all opened, the oil return channels are all closed, and the vertical shaft heading machine works normally and starts to tunnel downwards; and stopping according to the descending depth, and performing lengthening connection and oil discharge of the first oil conveying pipeline A, the second oil conveying pipeline B and the oil return pipeline T.
Step 3: lengthening and connecting the first oil conveying pipeline A: firstly, closing a main channel of a valve C5 on a first oil pipeline A, opening an oil return channel, closing A3 to A4, and communicating A4 to T5; simultaneously opening a main channel and an oil return channel of a valve E7 on a first oil pipeline A to enable A5 to A6 to be communicated and T7 to A6 to be communicated; closing an oil return passage of a valve D6 on the second oil conveying pipeline to prevent T6 to B4 from being communicated; compressed air is introduced into the port of an oil return channel T7 of the valve E7, and hydraulic oil in the upper pipeline part of the first oil conveying pipeline A returns to the oil tank 1 through a route of A6-A5-A4-T5-T; after the oil in the first oil pipeline A is completely blown back to the oil tank 1 to finish oil discharge, a joint at the opening of the valve E7A6 is opened, and a hose is connected, so that the lengthening of the first oil pipeline A is finished.
Step 4: lengthening and connecting the second oil pipeline B: firstly, closing a main channel of a valve D6, opening an oil return channel, closing B3 to B4, and communicating B4 to T6; simultaneously opening a main channel and an oil return channel of a valve F8 on a second oil pipeline B to enable B5 to B6 to be communicated and T8 to B6 to be communicated; closing an oil return passage of a valve C5 on the first oil conveying pipeline to prevent T5 to A4 from being communicated; compressed air is introduced into a port T8 of the valve F8, and hydraulic oil in a pipeline of the uphole part of the second oil conveying pipeline B returns to the oil tank 1 through a route of B6-B5-B4-T6-T; after the oil in the second oil pipeline B is completely blown back to the oil tank 1 to finish oil discharge, a joint at the opening of the valve F8B6 is opened, and a hose is connected, so that the lengthening of the second oil pipeline B is finished.
Step 5: lengthening the oil return pipeline T: after the first oil pipeline A and the second oil pipeline B are drained, the oil in the oil return pipeline also returns to the oil tank 1 in the process, and a hose is directly connected to the port of the oil return pipeline T1 at the wellhead.
Step 6: exhausting the newly added pipeline: opening the main passages of the valves C5, E7 and F8, and closing the oil return passages of the valves C5, E7 and F8; closing the main channel of the valve D6, opening the oil return channel of the valve D6, adjusting the oil return opening of the valve D according to the actual oil return pressure, controlling the pump station to output according to 10% -30% of the total pump displacement, enabling oil to enter the underground motor 9 through the main channel of the valve C5 and the main channel of the valve E7 on the first oil conveying pipeline A from the outlet of the pump station 3, enabling the oil to enter the main channel of the valve F8 to enter the oil return channel of the valve D6 and return to the oil tank 1, enabling the motor 2 to continuously drive the hydraulic pump station 3 to operate, enabling air mixed in a new connecting pipeline to enter the oil tank 1 along with the oil, ascending to the upper part of the oil tank 1, and discharging the oil from the inside of the oil.
The invention is not described in detail in the prior art.
The embodiments selected herein for the purposes of disclosing the present invention are presently considered to be suitable, however, it is to be understood that the present invention is intended to include all such variations and modifications as fall within the spirit and scope of the present invention.
Claims (2)
1. A method for connecting and discharging oil of a hydraulic system of a shaft heading machine is characterized by comprising the following steps of: the hydraulic system of the vertical shaft heading machine comprises an oil tank, a motor, a pump station, a flushing valve group and a motor; the motor provides power for the pump station, the pump station is communicated with an oil outlet of the oil tank, two paths of oil pipelines of the pump station are connected with the flushing valve group, the flushing valve group is connected with the underground motor through two groups of three-way ball valves, and an oil return port of the motor is connected with an oil return port of the oil tank through an oil return pipeline; the method comprises the following specific steps:
step 1: two three-way ball valve valves C and D are correspondingly arranged on a first oil pipeline and a second oil pipeline at the outlet of a station of a hydraulic system pump station to form a first group of three-way ball valves; two three-way ball valve valves E and F are correspondingly arranged on a first oil pipeline and a second oil pipeline at the lower wellhead to form a second group of three-way ball valves; the valve C, the valve D, the valve E and the valve F are the same and comprise a main channel and an oil return channel, and handles of the two channels are not mutually associated; the oil return channels of the first group of three-way ball valves are communicated with an oil tank through an oil return pipeline; disconnecting an oil return port of an oil return channel of the second group of three-way ball valves from the outside, and waiting to be connected with an air source when needed;
step 2: when the vertical shaft heading machine works, the main channels of the two groups of three-way ball valves are all opened, the oil return channels are all closed, and the vertical shaft heading machine works normally and starts to tunnel downwards; stopping according to the descending depth, and performing lengthening connection and oil discharge of the first oil conveying pipeline, the second oil conveying pipeline and the oil return pipeline;
step 3: lengthening and connecting the first oil conveying pipeline: firstly, closing a main channel of a valve C on a first oil delivery pipeline, and opening an oil return channel; simultaneously opening a main channel and an oil return channel of a valve E on a first oil delivery pipeline; closing an oil return passage of a valve D on the second oil conveying pipeline; compressed air is introduced into the oil return channel of the valve E, and hydraulic oil in the upper pipeline part of the first oil conveying pipeline returns to the oil tank through the main channel of the valve E and the oil return channel of the valve C; after the oil in the first oil conveying pipeline is completely blown back by the oil, opening a joint at the rear end of the valve E, and adding a hose to complete lengthening of the first oil conveying pipeline;
step 4: lengthening and connecting the second oil pipeline: firstly, closing a main channel of the valve D and opening an oil return channel; simultaneously opening a main channel and an oil return channel of a valve F on the second oil delivery pipeline; closing an oil return passage of the valve C on the first oil conveying pipeline; compressed air is introduced into the oil return channel of the valve F, and hydraulic oil in the upper pipeline part of the second oil conveying pipeline returns to the oil tank through the main channel of the valve F and the oil return channel of the valve D; after the oil in the second oil pipeline is completely blown back by the oil liquid, opening a joint at the rear end of the main channel of the valve F, and adding a hose to lengthen the second oil pipeline;
step 5: lengthening an oil return pipeline: after the first oil pipeline and the second oil pipeline are drained, the oil in the oil return pipeline is returned to the oil tank in the process, and a hose is directly connected to the oil return pipeline at the wellhead;
step 6: exhausting the newly added pipeline: opening the main passages of the valves C, E and F, and closing the oil return passages of the valves C, E and F; closing the main channel of the valve D, opening the oil return channel of the valve D, controlling the pump station to output, enabling oil to pass through the main channels of the valve C and the valve E on the first oil conveying pipeline from the outlet of the pump station, entering the underground motor, entering the main channel of the valve F, entering the oil return channel of the valve D, returning to the oil tank, enabling the motor to continuously drive the hydraulic pump station to operate, enabling air mixed in the new connecting pipeline to enter the oil tank along with the oil, ascending to the upper part of the oil tank, and discharging from the inside of the oil.
2. The method for connecting and discharging oil by a hydraulic system pipeline of a shaft boring machine according to claim 1, wherein the method comprises the following steps: in the step 6, an oil return channel of the valve D is opened, the oil return opening of the valve D is adjusted according to the actual oil return pressure, and a pump station is controlled to output according to 10% -30% of the total pump displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061794.9A CN113898622B (en) | 2021-09-10 | 2021-09-10 | Pipeline connection and oil discharge method for hydraulic system of vertical shaft heading machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111061794.9A CN113898622B (en) | 2021-09-10 | 2021-09-10 | Pipeline connection and oil discharge method for hydraulic system of vertical shaft heading machine |
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| CN113898622A CN113898622A (en) | 2022-01-07 |
| CN113898622B true CN113898622B (en) | 2023-07-18 |
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| CN212868059U (en) * | 2020-08-20 | 2021-04-02 | 中铁工程装备集团有限公司 | Dual-mode shield tunneling machine hydraulic system |
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| CN2926617Y (en) * | 2006-07-07 | 2007-07-25 | 克莱德贝尔格曼能源环保技术(北京)有限公司 | Movable hydraulic pump station |
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| CN113898622A (en) | 2022-01-07 |
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