CN112628231A - Automatic drilling control valve group, control system and control method thereof - Google Patents
Automatic drilling control valve group, control system and control method thereof Download PDFInfo
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- CN112628231A CN112628231A CN202110123974.9A CN202110123974A CN112628231A CN 112628231 A CN112628231 A CN 112628231A CN 202110123974 A CN202110123974 A CN 202110123974A CN 112628231 A CN112628231 A CN 112628231A
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
Abstract
The invention provides an automatic drilling control valve group, a control system and a control method thereof. According to the invention, automatic maintenance of drilling, automatic cutting of a slag discharging source at a drilling stroke end point, stopping of rotation, recovery of the power head and automatic stop of the recovery end point are realized through the automatic drilling control valve group, and the next drilling cycle is waited, so that the investment of operators for multi-drill synchronous construction is reduced, the labor intensity of the operators is reduced, and the construction requirement that one person operates a plurality of drilling machines simultaneously is met.
Description
Technical Field
The invention relates to the technical field of automatic control of drilling machines, in particular to an automatic drilling control valve group, a control system and a control method thereof.
Background
Because the drilling time of the rock drilling machine accounts for more than 85% of the whole construction working cycle period, the drilling time of the jumbolter accounts for more than 70% of the working cycle period, the time of the drilling working condition in the construction process accounts for very high, in addition, the drilling construction is the compound actions of power head rotation, propulsion, slag discharge and the like, the number of drilling operation handles is two to three, the drilling operation handles need to be continuously controlled by one person, the labor intensity is high, and the efficiency is low; in addition, because some equipment has a condition that one platform is provided with a plurality of drilling machines, the requirements of synchronous construction of the drilling machines on operators and operation space are difficult to meet. Therefore, there is a high necessity for an automatic drilling system to solve the above problems.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an automatic drilling control valve group, a control system and a control method thereof, and the automatic drilling control valve group is used for realizing automatic maintenance of drilling, automatic cutting of a slag discharging source at a drilling stroke end point, stopping of rotation, recovery of a power head and automatic stop of the recovery end point, and waiting for the next drilling cycle, so that the investment of operators for multi-drill synchronous construction is reduced, the labor intensity of the operators is reduced, and the construction requirement of simultaneously operating a plurality of drilling machines by one person is met.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides an automatic drilling valve unit, includes the valve body, seted up a plurality of hydraulic fluid port on the valve body, be provided with switching-over valves, balanced valves and sequence control valve in the valve body, switching-over valves, balanced valves and sequence control valve are linked together with the hydraulic fluid port that corresponds respectively, and balanced valves is linked together with switching-over valves and sequence control valve respectively, and switching-over valves is linked together with the sequence control valve.
Preferably, the reversing valve group comprises a first reversing valve, a second reversing valve, a third reversing valve and a fourth reversing valve, the balance valve group comprises a first balance valve and a second balance valve, and the first balance valve, the second balance valve, the first reversing valve, the second reversing valve, the third reversing valve and the fourth reversing valve are respectively communicated with the corresponding oil ports; the first balance valve is communicated with the second balance valve, the first balance valve is respectively communicated with the first reversing valve and the oil port through the first shuttle valve, the second balance valve is communicated with the sequence control valve, the sequence control valve is communicated with the oil port through the second shuttle valve, the sequence control valve is respectively communicated with the second reversing valve, the third reversing valve and the fourth reversing valve, the second reversing valve is respectively communicated with the first reversing valve and the third reversing valve, the third reversing valve is respectively communicated with the second shuttle valve, the fourth reversing valve and the oil port, and the fourth reversing valve is communicated with the oil port.
Preferably, the plurality of oil ports include a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port, a sixth oil port, a seventh oil port, an eighth oil port, a ninth oil port, a tenth oil port, an eleventh oil port, a twelfth oil port and a thirteenth oil port; the first oil port is respectively communicated with a first reversing valve and a first shuttle valve, the first shuttle valve is communicated with a first balance valve and a third oil port, the second oil port is respectively communicated with a second balance valve and a second reversing valve, a fourth oil port, a fifth oil port and a sixth oil port are respectively communicated with a fourth reversing valve, the sixth oil port is respectively communicated with a sequence control valve, a second reversing valve and a third reversing valve, a seventh oil port is respectively communicated with the sequence control valve, the second shuttle valve and the third reversing valve, an eighth oil port is communicated with the second reversing valve, a ninth oil port is respectively communicated with the first reversing valve and the second reversing valve, a tenth oil port is communicated with the first reversing valve, an eleventh oil port is communicated with the second shuttle valve, a twelfth oil port is respectively communicated with the first balance valve and the second balance valve, and a thirteenth oil port is respectively communicated with the second balance valve and the first balance valve.
Preferably, the first reversing valve, the second reversing valve and the fourth reversing valve are two-position three-way reversing valves, and the third reversing valve is a two-position four-way reversing valve.
An automatic drilling control system comprises an automatic drilling control valve group, wherein a ninth oil port in the automatic drilling control valve group is communicated with a power head rotary oil inlet loop, a tenth oil port is communicated with a slag discharge fluid source through a drilling machine slag discharge hydraulic control valve, an eleventh oil port is communicated with a drilling stroke control valve, the drilling stroke control valve is communicated with the power head rotary oil inlet loop, the power head rotary oil inlet loop is communicated with a first multi-way reversing valve, the first multi-way reversing valve and a second multi-way reversing valve are communicated with an eighth oil port, the second multi-way reversing valve is respectively communicated with a first oil port, a second oil port and a seventh oil port, a twelfth oil port and a thirteenth oil port are respectively communicated with a rodless cavity and a rod cavity of a propulsion oil cylinder, the third multi-way reversing valve is respectively communicated with a third oil port and a fourth oil port, and a fifth oil port is communicated with a pilot oil source.
Preferably, the power head rotary oil inlet loop comprises a power head rotary motor, an oil inlet of the power head rotary motor is respectively communicated with the drilling stroke control valve, the first multi-way reversing valve and the first reversing valve, and an oil return port of the power head rotary motor is communicated with the first multi-way reversing valve.
An operating method of an automatic drilling control system, comprising the steps of:
s1, forward rotation of the power head: the first multi-way reversing valve is controlled to reverse the forward rotation direction of the power head rotary motor, high-pressure hydraulic oil circularly flows through the first multi-way reversing valve and the power head rotary motor to finish the forward rotation action of the power head, and meanwhile, the high-pressure hydraulic oil sequentially flows into the drilling stroke control valve, the first reversing valve and the second reversing valve to keep a pressure-bearing state;
s2, propulsion of a propulsion oil cylinder: controlling a second multi-way reversing valve to reverse the propelling direction of the propelling oil cylinder, enabling high-pressure hydraulic oil to flow into a rodless cavity of the propelling oil cylinder after sequentially passing through the second multi-way reversing valve, a first oil port, a first shuttle valve, a first balance valve and a twelfth oil port, enabling the high-pressure hydraulic oil to flow into the second balance valve to keep a pressure-bearing state, enabling a piston rod in a rod cavity of the propelling oil cylinder to extend out along with the inflow of the high-pressure hydraulic oil, enabling the second balance valve to be conducted, enabling the high-pressure hydraulic oil to flow into the second multi-way reversing valve after sequentially passing through the rod cavity, a thirteenth oil port, the second balance valve and the second oil port of the propelling oil cylinder, finally enabling the high-pressure hydraulic oil to flow back to the oil;
s3, slag discharge action: the rotary load of the power head is increased along with the propulsion of the propulsion oil cylinder, the pressure at the oil ports of the first reversing valve, the second reversing valve and the drilling machine slag discharging hydraulic control valve is increased, when the pressure reaches a set value, the first reversing valve, the second reversing valve and the drilling machine slag discharging hydraulic control valve are respectively reversed, high-pressure hydraulic oil flows into the drilling machine slag discharging hydraulic control valve after sequentially passing through the first multi-way reversing valve, the first oil port, the first reversing valve and the tenth oil port, and the drilling machine slag discharging hydraulic control valve is opened to start slag discharging operation; meanwhile, a pilot oil source sequentially passes through a fifth oil port, a fourth reversing valve, a third reversing valve, a second reversing valve and an eighth oil port and then respectively flows into the first multi-way reversing valve and the second multi-way reversing valve, the first multi-way reversing valve and the second multi-way reversing valve are automatically maintained at the moment, and a power head rotary motor and a propulsion oil cylinder respectively maintain forward rotation and propulsion actions;
s4, ending the drilling action: when the drilling is carried out to the end point position, triggering a drilling stroke reversing valve to open, and allowing the high-pressure hydraulic oil to flow into a third reversing valve through a power head rotary motor, the drilling stroke reversing valve, an eleventh oil port and a second shuttle valve in sequence;
the pressure at the oil port of the third reversing valve is increased, the third reversing valve reverses, and at the moment, the pilot oil source sequentially passes through the fourth reversing valve, the third reversing valve, the second shuttle valve and the seventh oil port and then flows into the second multi-way reversing valve;
meanwhile, the high-pressure hydraulic oil flows back to the oil tank through the eighth oil port, the second reversing valve, the third reversing valve and the sixth oil port in sequence through the first multi-way reversing valve and the second multi-way reversing valve, at the moment, the first multi-way reversing valve is reversed to the middle position, the second multi-way reversing valve is reversed to the reverse direction, and the third reversing valve is reversed to be kept;
meanwhile, high-pressure hydraulic oil flows into a rod cavity of the propulsion oil cylinder through a second multi-way reversing valve, a second oil port, a second balance valve and a thirteenth oil port in sequence, the high-pressure hydraulic oil flows into an oil port of the first balance valve to keep a pressure-bearing state, the first balance valve reverses along with the rise of the pressure at the oil port of the first balance valve, the high-pressure hydraulic oil flows into the second multi-way reversing valve or a third multi-way reversing valve through a rodless cavity, a twelfth oil port, the first balance valve, a first shuttle valve and a first oil port or a third oil port of the propulsion oil cylinder in sequence and finally flows back to an oil tank, and at the moment, the propulsion oil cylinder keeps a retraction state, and the power rotary motor stops rotating and deslagging to stop;
s5, ending the drilling cycle: when the propulsion oil cylinder retracts to the end point, the sequence control valve is opened, high-pressure hydraulic oil sequentially flows into the oil tank through the second multi-way reversing valve, the seventh oil port, the sequence control valve and the sixth oil port, the second multi-way reversing valve is reversed to the middle position at the moment, drilling is stopped, and the automatic drilling work cycle is finished.
Compared with the prior art, the invention has the beneficial effects that:
1. the control valve bank with high integration is designed, so that the control valve bank can be used for mounting and using various drilling machines, and has good applicability;
2. the drilling machine continuously advances, keeps and stops by utilizing the cooperation of the second multi-way reversing valve, the first shuttle valve, the first balance valve and the second balance valve; and when the drilling reaches the terminal point, the communication signal oil circuit of the drilling stroke reversing valve controls the first multi-way reversing valve and the second multi-way reversing valve to reverse to the neutral position, and the actions of deslagging, propelling and forward rotation of the motor are stopped, so that the automatic deslagging source cutting-off, the rotation stopping, the power head withdrawing and the terminal point withdrawing are integrally realized, the next drilling cycle is waited, the investment of operators for multi-drill synchronous construction is reduced, the labor intensity of the operators is reduced, and the construction requirement that one person operates a plurality of drilling machines simultaneously is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the working principle of embodiment 1.
Fig. 2 is a schematic view of the working principle of embodiment 2.
In the drawing, 1 is a first balance valve, 2 is a second balance valve, 3 is a second shuttle valve, 4 is a second reversing valve, 5 is a sequence control valve, 6 is a third reversing valve, 7 is a fourth reversing valve, 8 is a first shuttle valve, 9 is a first reversing valve, 10 is a propulsion oil cylinder, 11 is a drilling machine slag discharge hydraulic control valve, 12 is a power head rotary motor, 13 is a drilling stroke reversing valve, 14 is a first multi-way reversing valve, 15 is an oil tank, 16 is a second multi-way reversing valve, 17 is a third multi-way reversing valve, a1 is a first oil port, B1 is a second oil port, a2 is a third oil port, B2 is a fourth oil port, X is a fifth oil port, T is a sixth oil port, B is a seventh oil port, a is an eighth oil port, D is a ninth oil port, W is a tenth oil port, S is an eleventh oil port, C1 is a twelfth oil port, and C2 is a thirteenth oil port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Example 1: as shown in fig. 1, an automatic drilling control valve group comprises a valve body, a plurality of oil ports have been seted up on the valve body, be provided with switching-over valves, balanced valves and sequence control valve in the valve body, switching-over valves, balanced valves and sequence control valve are linked together with the oil port that corresponds respectively, balanced valves is linked together with switching-over valves and sequence control valve respectively, switching-over valves and sequence control valve are linked together, through designing high integrated form control valve group, can be used to the automatic control of creeping into of multiple rig installation and use, have fine suitability.
The reversing valve group comprises a first reversing valve 9, a second reversing valve 4, a third reversing valve 6 and a fourth reversing valve 7, the first reversing valve 9, the second reversing valve 4 and the fourth reversing valve 7 are two-position three-way reversing valves, the second reversing valve and the third reversing valve are external control reversing valves, the external control reversing pressure of the second reversing valve can be set according to the actual use requirement of the D port pressure, the external control reversing pressure of the third reversing valve can be set according to the actual use pressure requirement of an eleventh oil port S and is smaller than the pilot oil supply pressure, the third reversing valve 6 is a two-position four-way reversing valve, the balance valve group comprises a first balance valve 1 and a second balance valve 2, and the first balance valve 1, the second balance valve 2, the first reversing valve 9, the second reversing valve 4, the third reversing valve 6 and the fourth reversing valve 7 are respectively communicated with corresponding oil ports; the first balance valve 1 is communicated with the second balance valve 2, the first balance valve 1 is respectively communicated with a first reversing valve 9 and an oil port through a first shuttle valve 8, the second balance valve 2 is communicated with a sequence control valve 5, the sequence valve 5 is an external control sequence valve and can be replaced by an external control two-position two-way reversing valve or an external control two-position three-way reversing valve, the sequence control valve 5 is communicated with the oil port through a second shuttle valve 3, the sequence control valve 5 is respectively communicated with a second reversing valve 4, a third reversing valve 6 and a fourth reversing valve 7, the second reversing valve 4 is respectively communicated with the first reversing valve 9 and the third reversing valve 6, the third reversing valve 6 is respectively communicated with the second shuttle valve 3, the fourth reversing valve 7 and the oil port, and the fourth reversing valve 7 is communicated with the oil port.
The plurality of oil ports comprise a first oil port A1, a second oil port B1, a third oil port A2, a fourth oil port B2, a fifth oil port X, a sixth oil port T, a seventh oil port B, an eighth oil port a, a ninth oil port D, a tenth oil port W, an eleventh oil port S, a twelfth oil port C1 and a thirteenth oil port C2; the first oil port A1 is respectively communicated with a first balance valve 9 and a first shuttle valve 8, the first shuttle valve 8 is respectively communicated with a first balance valve 1 and a third oil port A2, the second oil port B1 is respectively communicated with a second balance valve 2 and a second reversing valve 4, the fourth oil port B2, the fifth oil port X and the sixth oil port T are respectively communicated with a fourth reversing valve 7, the sixth oil port T is respectively communicated with a sequence control valve 5, a second reversing valve 4 and a third reversing valve 6, the seventh oil port B is respectively communicated with the sequence control valve 5, the second shuttle valve 3 and the third reversing valve 6, the eighth oil port a is communicated with the second reversing valve 4, the ninth oil port D is respectively communicated with the first reversing valve 9 and the second reversing valve 4, the tenth oil port W is communicated with the first reversing valve 9, the eleventh S is communicated with the second shuttle valve 3, and the twelfth oil port C1 is respectively communicated with the first balance valve 1 and the second balance valve 2, the thirteenth port C2 communicates with the second balance valve 2 and the first balance valve 1, respectively.
The first oil port A1 is communicated with an oil port 8B of the shuttle valve 8 and an oil port 9C of the two-position three-way reversing valve, the second oil port B1 is communicated with an oil port 2B of the balance valve 2 and an oil port 5C of the sequence valve 5, the third oil port A2 is communicated with an oil port 8A of the shuttle valve 8, the fourth oil port B2 is communicated with an oil port 7D of the fourth reversing valve 7, the fifth oil port X is communicated with an oil port 7B of the fourth reversing valve 7, the sixth oil port T is communicated with an oil port 7C of the fourth reversing valve 7, an oil port 6D of the third reversing valve 6, an oil port 4C of the second reversing valve 4 and an oil port 5B of the sequence valve 5, the seventh oil port B is communicated with an oil port 6B of the third reversing valve 6, an oil port 5A of the sequence valve 5 and an oil port 3B of the shuttle valve 3, the eighth oil port a is communicated with an oil port 4A of the second reversing valve 4, the ninth oil port D is communicated with an oil port 9D of the first reversing valve, the tenth port W is communicated with the port 9A of the first directional valve 9, the eleventh port S is communicated with the port 3A of the first shuttle valve 3, the twelfth port C1 is communicated with the port 1A of the balance valve 1 and the port 2C of the balance valve 2, and the thirteenth port C2 is communicated with the port 2A of the balance valve 2 and the port 1C of the balance valve 1.
Example 2: as shown in fig. 2, an automatic drilling control system includes an automatic drilling control valve set, in which a ninth oil port D is communicated with a power head rotary oil inlet loop, the ninth oil port D is connected with a power head rotary forward oil inlet loop, a tenth oil port W is communicated with a slag discharge fluid source through a slag discharge fluid control valve 11 of a drilling machine, the tenth oil port W is connected with a slag discharge fluid source fluid control valve of the drilling machine, an eleventh oil port S is communicated with a drilling stroke control valve 13, the eleventh oil port S is connected with a drilling stroke control valve, the drilling stroke control valve 13 is communicated with the power head rotary oil inlet loop, and the power head rotary oil inlet loop is communicated with a first multi-way directional control valve 14.
The power head rotary oil inlet loop comprises a power head rotary motor 12, an oil inlet of the power head rotary motor 12 is respectively communicated with a drilling stroke control valve 13, a first multi-way reversing valve 14 and a first reversing valve 9, an oil return port of the power head rotary motor 12 is communicated with the first multi-way reversing valve 14, the first multi-way reversing valve 14 and a second multi-way reversing valve 16 are both communicated with an eighth oil port a, the second multi-way reversing valve 16 is respectively communicated with a first oil port A1, a second oil port B1 and a seventh oil port B, a twelfth oil port C1 and a thirteenth oil port C2 are respectively communicated with a rodless cavity and a rod cavity of the propulsion oil cylinder 10, a third multi-way reversing valve 17 is respectively communicated with a third oil port A2 and a fourth oil port B2, a fifth oil port X is communicated with a pilot oil source, and the second multi-way reversing valve is utilized, the first shuttle valve, the first balance valve and the second balance valve are matched to realize the continuous propelling keeping and propelling stopping actions of the drilling machine during drilling; and when the drilling reaches the terminal point, the communication signal oil circuit of the drilling stroke reversing valve controls the first multi-way reversing valve and the second multi-way reversing valve to reverse to the neutral position, and the actions of deslagging, propelling and forward rotation of the motor are stopped, so that the automatic deslagging source cutting-off, the rotation stopping, the power head withdrawing and the terminal point withdrawing are integrally realized, the next drilling cycle is waited, the investment of operators for multi-drill synchronous construction is reduced, the labor intensity of the operators is reduced, and the construction requirement that one person operates a plurality of drilling machines simultaneously is met.
Example 3: as shown in fig. 2, a control method of an automatic drilling control system includes the steps of:
s1, forward rotation of the power head: controlling a first multi-way reversing valve 14 to reverse to the forward rotation direction of a power head rotary motor 12, communicating high-pressure hydraulic oil with an oil port A of the first multi-way reversing valve 14, an oil supply port 12A for forward transmission of the power head rotary motor, an oil port 13A of a stroke reversing valve, an oil port 9D of a first reversing valve 9 and an oil port 4D of a second reversing valve 4, circularly flowing the high-pressure hydraulic oil through the first multi-way reversing valve 14 and the power head rotary motor 12 to complete forward rotation of the power head, and simultaneously sequentially flowing the high-pressure hydraulic oil into a drilling stroke control valve 13, the first reversing valve 9 and the second reversing valve 4 to keep a pressure-bearing state; the high-pressure hydraulic oil is communicated with an oil port A of a first multi-way reversing valve 14, an oil supply port 12A of a power head rotary motor in forward transmission, an oil port 13A of a stroke reversing valve, an oil port 9D of a first reversing valve 9 and an oil port 4D of a second reversing valve 4;
s2, propulsion of a propulsion oil cylinder: the propulsion direction of the propulsion oil cylinder 10 is reversed by controlling the second multi-way reversing valve 16, high-pressure hydraulic oil flows into a rodless cavity of the propulsion oil cylinder 10 after passing through the second multi-way reversing valve 16, the first oil port A1, the first shuttle valve 8, the first balance valve 1 and the twelfth oil port C1 in sequence, meanwhile, the high-pressure hydraulic oil flows into the second balance valve 2 to keep a pressure-bearing state, along with the inflow of the high-pressure hydraulic oil, a piston rod in a rod cavity of the propulsion oil cylinder 10 extends out, the second balance valve 2 is conducted, the high-pressure hydraulic oil flows into the second multi-way reversing valve 16 after passing through the rod cavity of the propulsion oil cylinder 10, the thirteenth oil port C2, the second balance valve 2 and the second oil port B1 in sequence, and finally flows back to the oil; the method comprises the following steps that an oil port A1 of a high-pressure hydraulic and multi-way reversing valve 16, an oil port 8B of a shuttle valve 8, an oil port 8C of the shuttle valve 8, an oil port 1B of a balance valve 1, an oil port 1A of the balance valve 1, an oil port 2C of a balance valve 2, a twelfth oil port C1 and a rodless cavity of a propulsion oil cylinder 10 are communicated, meanwhile, the pressure is increased, a piston rod of the propulsion oil cylinder 10 extends out, the balance valve 2 is reversed to enable the oil port 2A of the balance valve 2 to be communicated with the oil port 2B of the balance valve 2, a rod cavity of the propulsion oil cylinder passes through a thirteenth oil port C2, the oil port 2A of the balance valve 2, the oil port 2B of the balance valve 2, a second oil port B1 and an oil return tank of an oil port B1 of the;
s3, slag discharge action: with the propulsion of the propulsion oil cylinder 10, the power head rotary load is increased, the pressures of the oil ports of the first reversing valve 9, the second reversing valve 4 and the drilling machine slag discharging hydraulic control valve 11 are increased, the rotary load is increased to increase the pressures of the oil port 9D of the two-position three-way reversing valve 9, the oil port 4D of the two-position three-way valve 4 and the oil port 11A of the slag discharging hydraulic control valve 11, when the pressures reach a set value, the first reversing valve 9, the second reversing valve 4 and the drilling and slag discharging hydraulic control valve 11 are respectively reversed, high-pressure hydraulic oil flows into the drilling machine slag discharging hydraulic control valve 11 after sequentially passing through the first multi-way reversing valve 14, the first oil port A1, the first reversing valve 9 and the tenth oil port W, and the drilling machine slag discharging hydraulic; meanwhile, a pilot oil source respectively flows into the first multi-way reversing valve 14 and the second multi-way reversing valve 16 after sequentially passing through the fifth oil port X, the fourth reversing valve 7, the third reversing valve 6, the second reversing valve 4 and the eighth oil port a, at the moment, the first multi-way reversing valve 14 and the second multi-way reversing valve 16 are automatically maintained, and the power head rotary motor 12 and the propulsion oil cylinder 10 respectively maintain forward rotation and propulsion actions;
an oil port 9C of the two-position three-way reversing valve 9 is communicated with an oil port 9A of the two-position three-way reversing valve 9, an oil port 4A of the two-position three-way reversing valve 4 is communicated with an oil port 4B of the two-position three-way reversing valve 4, an oil port 6A of the two-position four-way reversing valve 6, an oil port 7A of the two-position four-way reversing valve 7, an oil port 7B of the two-position three-way reversing valve 7, a fifth oil port X, an eighth oil port a, a pilot oil port a of the multi-way reversing valve 14, a pilot oil port a1 of the multi-way reversing valve 16 and a pilot oil source, the hydraulic control reversing valve 11 is opened to enable a slag discharge fluid source to be communicated, the multi-way reversing valve 14 and the multi-way reversing valve 16 to be automatically maintained in a reversing mode, namely, the power head rotary motor 12 keeps forward rotation, the slag discharge reversing valve 11 keeps open, the;
s4, ending the drilling action: when the drilling is carried out to the end point position, the drilling stroke reversing valve 13 is triggered to be opened, high-pressure hydraulic oil flows into the third reversing valve 6 through the power head rotary motor 9, the drilling stroke reversing valve 13, the eleventh oil port S and the second shuttle valve 3 in sequence, the oil port 13B of the stroke limiting reversing valve 13 is communicated with the oil port 13A of the stroke limiting reversing valve 13, the oil port 12A of the power head rotary motor 12, the eleventh oil port S, the oil port 3A of the shuttle valve 3, the oil port 3C of the shuttle valve 3 and the oil port 6E of the two-position three-way reversing valve 6;
the pressure at the oil port of the third reversing valve 6 is increased, the third reversing valve 6 reverses, and at the moment, the pilot oil source sequentially passes through the fourth reversing valve 7, the third reversing valve 6, the second shuttle valve 3 and the seventh oil port B and then flows into the second multi-way reversing valve 16, and the two-position three-way reversing valve 6 reverses to cause the pilot oil source to be communicated with the fifth oil port X, the oil port 7B of the two-position three-way reversing valve 7, the oil port 7A of the two-position three-way reversing valve 7, the oil port 6C of the two-position three-way reversing valve 6, the oil port 6B of the two-position three-way reversing valve 6, the eighth oil port B, the oil port 3B of the shuttle valve 3, the oil port 3C of the shuttle valve 3, the oil port 6E of the two-position three-way reversing valve 6, the oil port 5;
meanwhile, high-pressure hydraulic oil flows back to the oil tank through the eighth oil port a, the second reversing valve 4, the third reversing valve 6 and the sixth oil port T in sequence by the first multi-way reversing valve 14 and the second multi-way reversing valve 16, at the moment, the first multi-way reversing valve 14 is reversed to the middle position, the second multi-way reversing valve 16 is reversed to the reverse direction, and the third reversing valve 6 is reversed to be kept; the oil port a of the multi-way reversing valve 14 and the oil port a1 of the multi-way reversing valve 16 pass through the eighth oil port a, the oil port 4A of the two-position three-way reversing valve 4, the oil port 4B of the two-position three-way reversing valve 4, the oil port 6A of the two-position four-way reversing valve 6, the oil port 6D of the two-position four-way reversing valve 6 and the sixth oil port T to return to an oil tank, so that the multi-way reversing valve 14 returns to the middle position, the multi-way reversing valve 16 is reversed to the reverse direction, and the two-position four-way reversing;
meanwhile, high-pressure hydraulic oil flows into a rod cavity of the propulsion oil cylinder 10 through the second multi-way reversing valve 16, the second oil port B1, the second balance valve 2 and the thirteenth oil port C2 in sequence, the high-pressure hydraulic oil flows into the oil port of the first balance valve 1 to keep a pressure-bearing state, the first balance valve 1 reverses along with the pressure rise of the oil port of the first balance valve 1, the high-pressure hydraulic oil flows into the second multi-way reversing valve 16 or the third multi-way reversing valve 17 through a rodless cavity of the propulsion oil cylinder 10, the twelfth oil port C1, the first balance valve 1, the first shuttle valve 8 and the first oil port A1 or the third oil port A2 in sequence, and finally flows back to an oil tank, at the moment, the propulsion oil cylinder 10 keeps a retraction state, and the power rotary motor 12 stops rotating and deslagging; an oil port B1 of the multi-way reversing valve 16 is communicated with a second oil port B1, an oil port 2B of the balance valve 2, an oil port 1C of the balance valve 1 of an oil port 2A of the balance valve 2, a thirteenth oil port C2 and a rod cavity of the pushing oil cylinder 10, the pressure of the oil port 1C of the balance valve 1 is increased to reverse the balance valve 1, a rodless cavity of the pushing oil cylinder 10 is communicated with a twelfth oil port C1, an oil port 1A of the balance valve 1, an oil port 1B of the balance valve 1, an oil port 8C of the second shuttle valve 8, an oil port 8B or 8A of the shuttle valve 8, a first oil port A1 or a third oil port A2 and an oil tank, namely, the pushing oil cylinder 10 retracts and keeps, meanwhile, the power head 12 stops rotating, the deslagging reversing valve 11 is reset due to pressure relief of the port 11A;
s5, ending the drilling cycle: when the thrust oil cylinder 10 retracts to the end point, the sequence control valve 5 is opened, high-pressure hydraulic oil sequentially flows into the oil tank through the second multi-way reversing valve 16, the seventh oil port b, the sequence control valve 5 and the sixth oil port T, the second multi-way reversing valve 16 is reversed to the middle position at the moment, drilling is stopped, and the automatic drilling work cycle is finished; when the thrust cylinder 10 retracts to the end point, the pressure of the oil port 5C of the sequence valve 5 rises at the highest speed and reaches the opening pressure of the sequence valve 5, the oil port 5A of the sequence valve 5 is communicated with the oil port 5B of the sequence valve 5, so that the oil port B1 of the multi-way reversing valve 16 is communicated with the seventh oil port B, the oil port 5A of the sequence valve 5, the oil port 5B of the sequence valve 5 and the sixth oil port T, the multi-way reversing valve 16 returns to the middle position, the drilling is stopped, and an automatic drilling work cycle is finished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an automatic drilling valve group, includes the valve body, its characterized in that, a plurality of hydraulic fluid port has been seted up on the valve body, be provided with switching-over valves, balanced valves and sequence control valve in the valve body, switching-over valves, balanced valves and sequence control valve are linked together with corresponding hydraulic fluid port respectively, and balanced valves is linked together with switching-over valves and sequence control valve respectively, and switching-over valves is linked together with the sequence control valve.
2. The automatic drilling control valve group according to claim 1, characterized in that the directional valve group comprises a first directional valve (9), a second directional valve (4), a third directional valve (6) and a fourth directional valve (7), the balance valve group comprises a first balance valve (1) and a second balance valve (2), and the first balance valve (1), the second balance valve (2), the first directional valve (9), the second directional valve (4), the third directional valve (6) and the fourth directional valve (7) are respectively communicated with corresponding oil ports; the first balance valve (1) is communicated with the second balance valve (2), the first balance valve (1) is respectively communicated with a first reversing valve (9) and an oil port through a first shuttle valve (8), the second balance valve (2) is communicated with a sequence control valve (5), the sequence control valve (5) is communicated with the oil port through a second shuttle valve (3), the sequence control valve (5) is respectively communicated with a second reversing valve (4), a third reversing valve (6) and a fourth reversing valve (7), the second reversing valve (4) is respectively communicated with the first reversing valve (9) and the third reversing valve (6), the third reversing valve (6) is respectively communicated with the second shuttle valve (3), the fourth reversing valve (7) and the oil port, and the fourth reversing valve (7) is communicated with the oil port.
3. The automatic drilling control valve group of claim 1 or 2, wherein the plurality of oil ports comprise a first oil port (a 1), a second oil port (B1), a third oil port (a 2), a fourth oil port (B2), a fifth oil port (X), a sixth oil port (T), a seventh oil port (B), an eighth oil port (a), a ninth oil port (D), a tenth oil port (W), an eleventh oil port (S), a twelfth oil port (C1), and a thirteenth oil port (C2); the first oil port (A1) is respectively communicated with a first reversing valve (9) and a first shuttle valve (8), the first shuttle valve (8) is respectively communicated with a first balance valve (1) and a third oil port (A2), a second oil port (B1) is respectively communicated with a second balance valve (2) and a second reversing valve (4), a fourth oil port (B2), a fifth oil port (X) and a sixth oil port (T) are respectively communicated with a fourth reversing valve (7), the sixth oil port (T) is respectively communicated with a sequence control valve (5), a second reversing valve (4) and a third reversing valve (6), a seventh oil port (B) is respectively communicated with the sequence control valve (5), the second shuttle valve (3) and the third reversing valve (6), an eighth oil port (a) is communicated with the second reversing valve (4), and a ninth oil port (D) is respectively communicated with the first reversing valve (9) and the second reversing valve (4), the tenth oil port (W) is communicated with the first reversing valve (9), the eleventh oil port (S) is communicated with the second shuttle valve (3), the twelfth oil port (C1) is respectively communicated with the first balance valve (1) and the second balance valve (2), and the thirteenth oil port (C2) is respectively communicated with the second balance valve (2) and the first balance valve (1).
4. The set of automatic drilling control valves according to claim 3, characterized in that the first (9), second (4) and fourth (7) directional valves are two-position three-way directional valves and the third directional valve (6) is a two-position four-way directional valve.
5. An automatic drilling control system, characterized in that, comprises the automatic drilling control valve group according to claim 1 or 4, the ninth oil port (D) in the automatic drilling control valve group is communicated with a power head rotary oil inlet loop, the tenth oil port (W) is communicated with a slag discharging fluid source through a slag discharging hydraulic control valve (11) of a drilling machine, the eleventh oil port (S) is communicated with a drilling stroke control valve (13), the drilling stroke control valve (13) is communicated with the power head rotary oil inlet loop, the power head rotary oil inlet loop is communicated with a first multi-way reversing valve (14), the first multi-way reversing valve (14) and a second multi-way reversing valve (16) are communicated with an eighth oil port (a), the second multi-way reversing valve (16) is respectively communicated with a first oil port (A1), a second oil port (B1) and a seventh oil port (B), a twelfth oil port (C1) and a thirteenth oil port (C2) are respectively communicated with a rodless cavity and a rod cavity of a propulsion oil cylinder (10), the third multi-way reversing valve (17) is respectively communicated with a third oil port (A2) and a fourth oil port (B2), and a fifth oil port (X) is communicated with a pilot oil source.
6. The automatic drilling system according to claim 5, wherein the power head rotary oil inlet circuit comprises a power head rotary motor (12), an oil inlet of the power head rotary motor (12) is respectively communicated with the drilling stroke control valve (13), the first multi-way reversing valve (14) and the first reversing valve (9), and an oil return port of the power head rotary motor (12) is communicated with the first multi-way reversing valve (14).
7. Method of operating an automatic drilling control system according to claim 5 or 6, characterized in that it comprises the following steps:
s1, forward rotation of the power head: controlling a first multi-way reversing valve (14) to reverse to the forward rotation direction of a power head rotary motor (12), enabling high-pressure hydraulic oil to circularly flow through the first multi-way reversing valve (14) and the power head rotary motor (12) to complete forward rotation of the power head, and enabling the high-pressure hydraulic oil to sequentially flow into a drilling stroke control valve (13), a first reversing valve (9) and a second reversing valve (4) to keep a pressure-bearing state;
s2, propulsion of a propulsion oil cylinder: the method comprises the steps that a second multi-way reversing valve (16) is controlled to reverse the propelling direction of a propelling oil cylinder (10), high-pressure hydraulic oil flows into a rodless cavity of the propelling oil cylinder (10) after passing through the second multi-way reversing valve (16), a first oil port (A1), a first shuttle valve (8), a first balance valve (1) and a twelfth oil port (C1) in sequence, the high-pressure hydraulic oil flows into a second balance valve (2) to keep a pressure-bearing state, along with the inflow of the high-pressure hydraulic oil, a piston rod in a rod cavity of the propelling oil cylinder (10) extends out, the second balance valve (2) is conducted, the high-pressure hydraulic oil flows into the second multi-way reversing valve (16) after passing through the rod cavity of the propelling oil cylinder (10), a thirteenth oil port (C2), the second balance valve (2) and a second oil port (B1) in sequence, and finally flows back to an oil tank, and the steps are repeated, so that the;
s3, slag discharge action: with the propulsion of a propulsion oil cylinder (10), the rotary load of a power head is increased, the pressures of oil ports of a first reversing valve (9), a second reversing valve (4) and a drilling machine slag discharging hydraulic control valve (11) are increased, when the pressures reach set values, the first reversing valve (9), the second reversing valve (4) and the drilling machine slag discharging hydraulic control valve (11) are respectively reversed, high-pressure hydraulic oil sequentially passes through a first multi-way reversing valve (14), a first oil port (A1), the first reversing valve (9) and a tenth oil port (W) and then flows into the drilling machine slag discharging hydraulic control valve (11), and the drilling machine slag discharging valve (11) is opened to start slag discharging operation; meanwhile, a pilot oil source sequentially passes through a fifth oil port (X), a fourth reversing valve (7), a third reversing valve (6), a second reversing valve (4) and an eighth oil port (a) and then respectively flows into a first multi-way reversing valve (14) and a second multi-way reversing valve (16), at the moment, the first multi-way reversing valve (14) and the second multi-way reversing valve (16) are automatically maintained, and a power head rotary motor (12) and a propulsion oil cylinder (10) respectively maintain forward rotation and propulsion action;
s4, ending the drilling action: when the drilling head drills to the end point position, the drilling stroke reversing valve (13) is triggered to be opened, and high-pressure hydraulic oil flows into the third reversing valve (6) through the power head rotary motor (9), the drilling stroke reversing valve (13), the eleventh oil port (S) and the second shuttle valve (3) in sequence;
the pressure at the oil port of the third reversing valve (6) is increased, the third reversing valve (6) reverses, and at the moment, the pilot oil source sequentially passes through the fourth reversing valve (7), the third reversing valve (6), the second shuttle valve (3) and the seventh oil port (b) and then flows into the second multi-way reversing valve (16);
meanwhile, high-pressure hydraulic oil flows back to the oil tank through an eighth oil port (a), a second reversing valve (4), a third reversing valve (6) and a sixth oil port (T) in sequence through the first multi-way reversing valve (14) and the second multi-way reversing valve (16), at the moment, the first multi-way reversing valve (14) is reversed to a middle position, the second multi-way reversing valve (16) is reversed to a reverse direction, and the third reversing valve (6) is reversed to be kept;
meanwhile, high-pressure hydraulic oil flows into a rod cavity of the propulsion oil cylinder (10) through the second multi-way reversing valve (16), the second oil port (B1), the second balance valve (2) and the thirteenth oil port (C2) in sequence, the high-pressure hydraulic oil flows into an oil port of the first balance valve (1) to keep a pressure-bearing state, the first balance valve (1) reverses along with the pressure rise of the oil port of the first balance valve (1), the high-pressure hydraulic oil flows into the second multi-way reversing valve (16) or the third multi-way reversing valve (17) through a rodless cavity of the propulsion oil cylinder (10), the twelfth oil port (C1), the first balance valve (1), the first shuttle valve (8) and the first oil port (A1) or the third oil port (A2) in sequence, and finally flows back to the oil tank, and at the moment, the propulsion oil cylinder (10) keeps a retraction state, the power rotary motor (12) stops rotating and deslagging stops;
s5, ending the drilling cycle: when the propulsion oil cylinder (10) retracts to the end point, the sequence control valve (5) is opened, high-pressure hydraulic oil flows into the oil tank through the second multi-way reversing valve (16), the seventh oil port (b), the sequence control valve (5) and the sixth oil port (T) in sequence, the second multi-way reversing valve (16) is reversed to the middle position at the moment, drilling is stopped, and the automatic drilling work cycle is finished.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113073968A (en) * | 2021-04-14 | 2021-07-06 | 中煤科工集团重庆研究院有限公司 | Self-adaptive adjustment method and system for drilling parameters |
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| CN112628231B (en) | 2022-08-02 |
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