CN109322632B - Control system and method for exploration hydrogeological drilling mud circulation purification device - Google Patents
Control system and method for exploration hydrogeological drilling mud circulation purification device Download PDFInfo
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- CN109322632B CN109322632B CN201811437231.3A CN201811437231A CN109322632B CN 109322632 B CN109322632 B CN 109322632B CN 201811437231 A CN201811437231 A CN 201811437231A CN 109322632 B CN109322632 B CN 109322632B
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- 238000005553 drilling Methods 0.000 title claims abstract description 44
- 238000000746 purification Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 27
- 239000002002 slurry Substances 0.000 claims abstract description 218
- 239000007788 liquid Substances 0.000 claims abstract description 109
- 238000010438 heat treatment Methods 0.000 claims abstract description 78
- 230000001276 controlling effect Effects 0.000 claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims description 35
- 239000004576 sand Substances 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 26
- 230000001502 supplementing effect Effects 0.000 claims description 23
- 239000002994 raw material Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 238000011835 investigation Methods 0.000 claims 1
- 239000007790 solid phase Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/062—Arrangements for treating drilling fluids outside the borehole by mixing components
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- 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
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
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- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Sludge (AREA)
- Paper (AREA)
Abstract
The invention provides a control system of an automatic slurry circulation purifying device for hydrogeology exploration drilling, which comprises a slurry circulation purifying device and a PLC (programmable logic controller) hardware part; the mud circulation purifying device comprises a No. 2 bin and a No. 1 bin; the PLC hardware part comprises a PLC controller, a PLC analog quantity expansion module, a sensor, a liquid level control relay group, a heating circulating pump intermediate relay, a liquid level control alternating current contactor and a heating circulating pump alternating current contactor, wherein the liquid level control alternating current contactor is respectively connected with the liquid level control relay group and the liquid level control pump, and the heating circulating pump alternating current contactor is connected with the heating circulating pump intermediate relay and the heating circulating pump; the sensor comprises a thermometer arranged in a No. 1 bin, a first liquid level meter and a second liquid level meter arranged in a No. 2 bin; a heating circulation system connected with a heating circulation pump is arranged in the No. 1 bin, and a PLC controller controls the response of the heating circulation system; the No. 1 bin and the No. 2 bin are connected with a liquid level regulating and controlling system, and the PLC controller controls the response of the liquid level regulating and controlling system.
Description
Technical Field
The invention relates to the field of geological exploration, in particular to a control system and a control method of a hydrogeological drilling mud circulation purifying device for exploration.
Background
In the current hydrogeological well drilling construction process, the slurry returned to the ground from the bottom of the well contains a large amount of rock scraps and sand grains, the solid phase particles in the slurry can only be slightly reduced through manual sand bailing, a slurry tank and natural sedimentation in the sedimentation tank, and a considerable part of the rock scraps and sand grains enter a drilling pump along with the slurry when the slurry is continuously used and are sent to the bottom of the well again, so that the service lives of vulnerable parts and a drill bit of the drilling pump are greatly shortened, the drilling rate is obviously reduced, and even a drill rod is blocked in the drilling process; in addition, as the mud flows through a mud pit and a sedimentation pit below the ground for recycling, in the recycling process, the invasion of harmful substances in the mud to surrounding soil is difficult to avoid, and the environmental protection construction is not achieved. If the box body is used for storing and circulating the mud above the ground and a proper mud purifying (or solid phase control) system is adopted, the solid phase content in the mud is managed to be controlled and reduced as far as possible, so that the mud is purified, the method has very important significance for improving the working conditions of a mud pump, a drill bit and the like and reducing abrasion, and the environment-friendly construction can be ensured. According to the previous practice, the method shows that: when the solid phase particles in the slurry are reduced by 1%, the service life of the drill bit can be prolonged by 7-10%, and the drilling speed can be improved by 29%.
At present, the mud purifying device in the petroleum system at home and abroad is mature, but no mature complete equipment is provided for the hydrogeological well in China, the control system of the mud purifying device in the petroleum system is directly applied to the hydrogeological well, and the control system cannot adapt to the frequent assembly and disassembly working condition and the extreme environment of high cold and high temperature. The development of the control system matched with the hydrogeological well slurry purification device has obvious significance in the aspects of integrated innovation, control system innovation and the like, and the developed control system of the hydrogeological drilling automatic slurry circulation purification device is required to meet the requirements of frequent assembly and disassembly of the hydrogeological well, the purification requirements of low-temperature slurry heating and other extreme working conditions, the semi-automatic/automatic man-machine operation simple and convenient requirements, the stability of power supply, and the safety and the reliability requirements of the control system under the extreme working conditions.
Disclosure of Invention
In view of the foregoing, embodiments of the present invention provide a control system and method for a survey hydrogeological drilling mud circulation purification apparatus.
The embodiment of the invention provides a control system of an automatic slurry circulation purifying device for hydrogeology exploration drilling, which comprises a slurry circulation purifying device, a remote control subsystem connected with the slurry circulation purifying device, a liquid level control pump and a heating circulation pump;
The mud circulation purifying device comprises a No. 2 bin for recycling the slurry circulated in the drilling process and a No. 1 bin for conveying the slurry to the drilling well, wherein the No. 2 bin is connected with the No. 1 bin for conveying the slurry to the No. 1 bin;
the remote control subsystem comprises a PLC controller hardware part, wherein the PLC controller hardware part comprises a PLC controller, a PLC analog quantity expansion module communicated with the PLC controller and a sensor connected with the PLC analog quantity expansion module; the sensor comprises a thermometer arranged in the No. 1 bin, a first liquid level meter and a second liquid level meter arranged in the No. 2 bin;
the PLC hardware part also comprises a liquid level control relay group and a heating circulating pump intermediate relay, which are connected with the output contact of the PLC to be used as output switches of the corresponding output contacts, and a liquid level control alternating current contactor which is respectively connected with the liquid level control relay group and the liquid level control pump and a heating circulating pump alternating current contactor which is connected with the heating circulating pump intermediate relay and the heating circulating pump;
a heating circulation system connected with the heating circulation pump is arranged in the No. 1 bin, and the PLC controls the intermediate relay of the heating circulation pump and the alternating current contactor of the heating circulation pump to be conducted through the temperature received by the PLC and detected by the thermometer so as to control the heating circulation pump to enable the heating circulation system to respond;
The PLC controller controls the liquid level control relay group through the liquid levels detected by the first liquid level meter and the second liquid level meter received by the PLC controller, and controls the liquid level control pump to make the liquid level control system respond by conducting the liquid level control alternating current contactor.
Further, the liquid level control relay group comprises a slurry pump intermediate relay, a sand pump intermediate relay and a slurry supplementing pump intermediate relay which are connected with the corresponding output contacts, and the liquid level control alternating current contactor comprises a slurry pump alternating current contactor, a sand pump alternating current contactor and a slurry supplementing pump alternating current contactor which are respectively connected with the slurry pump intermediate relay, the sand pump intermediate relay and the slurry supplementing pump intermediate relay;
the liquid level control pump comprises a slurry pump which can be driven by the slurry pump alternating current contactor, a sand pump which can be driven by the sand pump alternating current contactor and a slurry supplementing pump which can be driven by the slurry supplementing pump alternating current contactor, and the liquid level control system comprises a compensation slurry preparation tank, a slurry mixing device, a suction pipeline connected with a No. 1 bin and a No. 2 bin, a manifold for a spray mixing hopper connected with the No. 1 bin and the compensation slurry preparation tank and a slurry mixing device connected with the compensation slurry preparation tank and the slurry mixing device;
The slurry pump is arranged between the suction pipelines to drive the suction pipelines to suck slurry in the No. 2 bin to the No. 1 bin, the slurry supplementing pump is arranged between the spray mixing hopper manifolds to convey slurry configured in the compensation slurry preparation tank to the No. 1 bin, and the sand pump is arranged between the slurry mixing devices to convey mixed slurry raw materials to the compensation slurry preparation tank.
Further, a vibrating screen is arranged on the No. 1 bin, the suction pipeline connects the No. 1 bin and the No. 2 bin by connecting the No. 2 bin and the vibrating screen, the PLC analog quantity expansion module is connected with the vibrating screen through a vibrating screen motor frequency converter, and the vibrating screen motor frequency converter is used for controlling the input frequency of the vibrating screen motor to control the vibrating frequency of the vibrating screen; the No. 2 bin is connected with a well through a recovery pipeline to recycle recycled slurry through the recovery pipeline, a flowmeter is arranged on the recovery pipeline, and the PLC analog expansion module is connected with the flowmeter and can read the flow of slurry recovery detected by the flowmeter.
Further, the PLC controller hardware part further comprises a vibrating screen motor intermediate relay connected with a corresponding output contact of the PLC controller and a vibrating screen motor alternating current contactor connected with the vibrating screen motor intermediate relay, the vibrating screen motor is connected with the vibrating screen motor alternating current contactor through a vibrating screen motor frequency converter, and the vibrating screen motor frequency converter can be started or closed by controlling the vibrating screen motor intermediate relay and the vibrating screen motor alternating current contactor to be conducted through the PLC controller.
Further, a first stirrer is arranged on the No. 1 bin, and a second stirrer is arranged on the compensation slurry preparation tank;
the PLC controller hardware part further comprises a first stirrer motor intermediate relay connected with a corresponding output contact of the PLC controller and a first stirrer alternating current contactor connected with the first stirrer motor intermediate relay, and the PLC controller can control the first stirrer motor intermediate relay and the first stirrer alternating current contactor to be conducted so as to regulate and control the stirring of the first stirrer in the No. 1 bin;
the PLC controller hardware part also comprises a second stirrer motor intermediate relay connected with a corresponding output contact of the PLC controller and a second stirrer alternating current contactor connected with the second stirrer motor intermediate relay, and stirring of the second stirrer in the compensation slurry distribution tank can be regulated and controlled by the PLC controller through the second stirrer motor intermediate relay and the second stirrer alternating current contactor.
Further, the first level gauge comprises a first upper level gauge for detecting an upper limit level and the first lower level gauge for detecting a lower limit level; the second level gauge comprises a second upper level gauge for detecting an upper limit level and the second lower level gauge for detecting a lower limit level.
Further, the PLC controller hardware part also comprises an indication and alarm part connected with the corresponding output contact of the PLC controller, and the indication and alarm part comprises an automatic indicator lamp, a manual indicator lamp, an illuminating lamp and a liquid level alarm.
Further, the remote control subsystem further comprises a constant temperature control cabinet, an explosion-proof operation panel, a voltage-stabilizing power supply part and a multi-core cable, wherein the PLC hardware part is arranged in the constant temperature control cabinet, an air conditioner is further arranged in the constant temperature control cabinet and used for keeping the temperature of the constant temperature control cabinet at 5-20 ℃, the explosion-proof operation panel is connected with the PLC hardware part in the constant temperature control cabinet through the multi-core cable, and a large number of explosion-proof operation buttons for controlling the connection and disconnection of a large number of output contacts of the PLC are arranged on the explosion-proof operation panel.
Further, the heating circulation system comprises a coiled pipe and a water circulation temperature control system, the coiled pipe is arranged at the bottom of the No. 1 bin, the water circulation temperature control system comprises a heating circulation pump and a water pipe connected with the heating circulation pump and the coiled pipe, and the heating circulation pump is arranged outside the No. 1 bin.
The embodiment of the invention provides a control method of a control system of an automatic slurry circulation purifying device for hydrogeology exploration drilling, which comprises a slurry circulation purifying device, a remote control subsystem connected with the slurry circulation purifying device, a slurry mixing device, a compensation slurry mixing tank and a heating circulating pump;
the mud circulation purifying device comprises a No. 2 bin for recycling the slurry circulated in the drilling process and a No. 1 bin for conveying the slurry to the drilling well, wherein the No. 2 bin is connected with the No. 1 bin for conveying the slurry to the No. 1 bin; the slurry mixing device is used for conveying slurry raw materials to the compensation slurry preparation tank, the compensation slurry preparation tank is connected with the No. 1 bin and used for preparing slurry, and the heating circulating pump is used for heating the No. 1 bin;
the control method comprises the following steps:
s1: the remote control subsystem comprises an automatic control mode and a manual control mode, and the control mode of the remote control subsystem is selected;
s2: if the control mode is an automatic control mode, detecting whether the temperature of the No. 1 bin is lower than a low value, if so, starting the heating circulating pump to heat the No. 1 bin, otherwise, entering a step S3;
S3: detecting whether the liquid level of the No. 1 bin reaches an upper limit, stopping the purification of the slurry pumped from the No. 2 bin by the No. 1 bin if the liquid level of the No. 1 bin reaches the upper limit, interrupting the slurry mixing device to convey slurry raw materials, and otherwise, entering a step S4;
s4: detecting whether the liquid level of the No. 2 bin reaches a lower limit, stopping purifying the slurry pumped from the No. 2 bin by the No. 1 bin if the liquid level of the No. 2 bin reaches the lower limit, interrupting the slurry conveying of the No. 1 bin by the No. 2 bin, interrupting the slurry conveying device to convey slurry raw materials, and otherwise, entering a step S5;
s5: sequentially causing the slurry mixing device to continue to convey slurry raw materials, operating a first stirrer in the No. 1 bin, causing the No. 2 bin to convey slurry to the No. 1 bin, causing the No. 1 bin to purify slurry pumped from the No. 2 bin, and causing the compensation slurry preparing tank to configure slurry;
s6: detecting whether the flow recovered from drilling to the No. 2 bin is lower than a threshold value, if so, enabling the compensation slurry preparation tank to convey slurry to the No. 1 bin;
s7: if the control mode is a manual control mode, detecting the liquid levels of the No. 1 bin and the No. 2 bin, and if the liquid levels of the No. 1 bin and the No. 2 bin are in a normal range, manually controlling the start and stop of the control system; otherwise, the control system alarms.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: the control system and the method for the exploration hydrogeology drilling mud circulation purifying device have the advantages that (1) the operation is convenient, the far-end semiautomatic and automatic control can be realized at the same time, and the start and stop control of the near end can be realized; (2) The special constant-temperature control cabinet and the explosion-proof operation panel are designed, and the stable operation of the hardware part of the PLC in the cabinet under severe conditions is ensured through an air conditioner in the constant-temperature control cabinet, so that the PLC can be well adapted to complex environments of exploration sites; (3) The heating circulation system is designed, the fluidity of the slurry in severe cold weather is ensured by the heating circulation system, and meanwhile, the voltage-stabilizing power supply part is added to the whole control system, so that the stability of power supply of the control system is ensured; (4) The control system and the method of the hydrogeology exploration drilling mud circulation purification device are specially aimed at the mud purification of shallow wells in hydrogeology, and the control system adopts modularization and reliability design, so that the system has the characteristics of convenient transportation, high reliability, good adaptability and the like.
Drawings
FIG. 1 is a schematic view of a mud circulation cleaning apparatus according to the present invention;
FIG. 2 is a schematic view of a thermostatic control cabinet, an explosion-proof operation panel and a multi-core cable according to the present invention;
FIG. 3 is a schematic diagram of the hardware portion of the PLC controller according to the present invention;
FIG. 4 is a schematic diagram of a heating cycle system according to the present invention;
fig. 5 is a flowchart of a control method according to the present invention.
Reference numerals illustrate: 1-remote control subsystem, 1.1-constant temperature control cabinet, 1.2-PLC controller hardware part, 1.2.1-PLC controller, 1.2.2-explosion-proof operation button, 1.2.2.2-manual/automatic switching button, 1.2.2.3-emergency stop button, 1.2.2.4-heating circulation pump start button, 1.2.2.5-vibrating screen start button, 1.2.2.6-11 kW slurry pump start button, 1.2.2.7-first stirrer start button, 1.2.2.8-second stirrer start button, 1.2.2.9-7.5 kW sand pump start button, 1.2.2.10-a start-stop button of a slurry supplementing pump, 1.2.3-a PLC analog quantity expansion module, 1.2.4-a motor frequency converter of a vibrating screen, 1.2.5-a sensor, 1.2.5.1-a first upper liquid level meter, 1.2.5.2-a first lower liquid level meter, 1.2.5.3-a flowmeter, 1.2.5.4-a thermometer, 1.2.5.5-a second upper liquid level meter, 1.2.5.6-a second lower liquid level meter, 1.2.6-an indication and alarm part, 1.2.6.1-a liquid level alarm, 1.2.6.2-an illuminating lamp and 1.2.6.3-a manual indicator lamp, 1.2.6.4-automatic indicator lamp, 1.2.7-intermediate relay part, 1.2.7.1-vibrating screen motor intermediate relay, 1.2.7.2-slurry pump intermediate relay, 1.2.7.3-first stirrer motor intermediate relay, 1.2.7.4-second stirrer motor intermediate relay, 1.2.7.5-sand pump intermediate relay, 1.2.7.6-heating circulation pump intermediate relay, 1.2.7.7-slurry pump intermediate relay, 1.2.8-alternating current contactor part, 1.2.8.1-vibrating screen motor alternating current contactor, 1.2.8.2-slurry pump alternating current contactor, 1.2.8.3-first stirrer alternating current contactor, 1.2.8.4-second stirrer alternating current contactor, 1.2.8.5-sand pump alternating current contactor, 1.2.8.6-heating circulating pump alternating current contactor, 1.2.8.7-slurry supplementing pump alternating current contactor, 1.5-explosion-proof operation panel, 1.4-voltage stabilizing power supply part, 1.3-multi-core cable, 2-near end control subsystem, 3-heating circulating system, 3.1-coiled pipe, 3.2-water circulation temperature control system, 4-sand pump, 5-second stirrer, 6-first stirrer, 7-1 # bin, 8-vibrating screen, 9-2 # bin, 10-slurry pump and 11-slurry supplementing pump.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 3, an embodiment of the present invention provides a control system for an automatic mud circulation and purification device for hydrogeological exploration drilling, which comprises a mud circulation and purification device, and further comprises a distal control subsystem 1 and a proximal control subsystem 2 connected with the mud circulation and purification device. The remote control subsystem 1 is used for realizing the semi-automatic and automatic control of the remote end of the hydrogeological drilling automatic mud circulation purifying device, and improving the operation efficiency. The near-end control subsystem 2 is used for realizing the near-end start-stop control of a pump or a motor, and is convenient for debugging, overhauling and processing other special working conditions. The control system also comprises a liquid level control pump and a heating circulating pump.
The mud circulation purifying device comprises a No. 2 bin 9 for recovering the slurry circulated in the drilling process and a No. 1 bin 7 for conveying the slurry to the drilling well, wherein the No. 2 bin 9 is connected with the No. 1 bin 7 for conveying the slurry to the No. 1 bin 7.
The remote control subsystem 1 comprises a PLC controller hardware part 1.2, wherein the PLC controller hardware part 1.2 is a control core of the control system, and comprises a PLC controller 1.2.1, a PLC analog quantity expansion module 1.2.3 communicated with the PLC controller 1.2.1 and a sensor 1.2.5 connected with the PLC analog quantity expansion module 1.2.3; the sensor 1.2.5 comprises a thermometer 1.2.5.4 arranged in the No. 1 bin 7, a first liquid level meter and a second liquid level meter arranged in the No. 2 bin. The first level gauge comprises a first upper level gauge 1.2.5.1 for detecting the upper limit level of the # 1 bin 7 and the first lower level gauge 1.2.5.2 for detecting the lower limit level of the # 1 bin 7; the second level gauge comprises a second upper level gauge 1.2.5.5 for detecting the upper limit level of the # 2 cartridge 9 and the second lower level gauge 1.2.5.6 for detecting the lower limit level of the # 2 cartridge 9.
Referring to fig. 1, 2 and 3, the remote control subsystem 1 further includes a constant temperature control cabinet 1.1, an explosion-proof operation panel 1.5, a voltage stabilizing and supplying part 1.4 and a multi-core cable 1.3, the PLC controller hardware part 1.2 is disposed in the constant temperature control cabinet 1.1, an air conditioner is further disposed in the constant temperature control cabinet 1.1 to keep the temperature of the constant temperature control cabinet 1.1 at 5-20 ℃, the explosion-proof operation panel 1.5 is connected with the PLC controller hardware part 1.2 in the constant temperature control cabinet 1.1 through the multi-core cable 1.3, and a plurality of explosion-proof operation buttons 1.2.2 for controlling the on and off of a plurality of output contacts of the PLC controller 1.2.1 are disposed on the explosion-proof operation panel 1.5. The explosion-proof operation buttons 1.2.2 comprise a system selection button 1.2.2.1, a manual/automatic switching button 1.2.2.2, an emergency stop button 1.2.2.3, a heating circulation pump starting button 1.2.2.4, a vibrating screen starting button 1.2.2.5, an 11kW slurry pump starting button 1.2.2.6, a first stirrer starting button 1.2.2.7, a second stirrer starting button 1.2.2.8, a 7.5kW sand pump starting button 1.2.2.9 and a slurry supplementing pump starting and stopping button 1.2.2.10. The voltage-stabilizing power supply part 1.4 is arranged outside the constant temperature control cabinet 1.1 and is used for providing stable voltage for the PLC controller hardware part 1.2 in the constant temperature control cabinet 1.1.
The hardware part 1.2 of the PLC controller also comprises a liquid level control relay group and a heating circulating pump intermediate relay 1.2.7.6 which are connected with the output contact of the PLC controller 1.2.1 to be used as output switches of the corresponding output contacts, and also comprises a liquid level control alternating current contactor which is respectively connected with the liquid level control relay group and the liquid level control pump and a heating circulating pump alternating current contactor 1.2.8.6 which is connected with the heating circulating pump intermediate relay 1.2.7.6 and the heating circulating pump.
Referring to fig. 3 and 4, a heating circulation system 3 connected to the heating circulation pump is disposed in the # 1 bin 7, and the PLC controller 1.2.1 controls the heating circulation pump intermediate relay 1.2.7.6 and the heating circulation pump ac contactor 1.2.8.6 to be turned on by the temperature detected by the thermometer 1.2.5.4 received by the PLC controller to control the heating circulation pump to make the heating circulation system 3 respond. The heating circulation system 3 comprises a coiled pipe 3.1 and a water circulation temperature control system 3.2, the coiled pipe 3.1 is arranged at the bottom of the No. 1 bin 7, the water circulation temperature control system 3.2 comprises a heating circulation pump and a water pipe connected with the heating circulation pump and the coiled pipe 3.1, and the heating circulation pump is arranged outside the No. 1 bin 7. When the thermometer 1.2.5.4 detects that the bottom of the No. 1 bin 7 is at low temperature, the PLC controller 1.2.1 can control to start the heating circulating pump, then circulating hot water is introduced into the coiled pipe 3.1 by the water circulation temperature control system 3.2 under the action of the heating circulating pump, and the proper temperature of slurry of the No. 1 bin 7 at low temperature can be ensured through heat dissipation of the coiled pipe 3.1.
The No. 1 bin 7 and the No. 2 bin 9 are connected with the liquid level regulation and control system through the liquid level control pump, and the PLC controller 1.2.1 controls the liquid level control relay group and the liquid level control alternating current contactor to be conducted through liquid levels detected by the first liquid level meter and the second liquid level meter received by the PLC controller, so that the liquid level control pump is controlled to enable the liquid level regulation and control system to respond.
The liquid level control relay group comprises a slurry pump intermediate relay 1.2.7.2, a sand pump intermediate relay 1.2.7.5 and a slurry supplementing pump intermediate relay 1.2.7.7 which are connected with the corresponding output contacts, and the liquid level control alternating-current contactor comprises a slurry pump alternating-current contactor 1.2.8.2, a sand pump alternating-current contactor 1.2.8.5 and a slurry supplementing pump alternating-current contactor 1.2.8.7 which are respectively connected with the slurry pump intermediate relay 1.2.7.2, the sand pump intermediate relay 1.2.7.5 and the slurry supplementing pump intermediate relay 1.2.7.7.
The liquid level control pump comprises a slurry pump 10 which can be driven by a slurry pump alternating-current contactor 1.2.8.2, a sand pump 4 which can be driven by a sand pump alternating-current contactor 1.2.8.5 and a slurry supplementing pump 11 which can be driven by a slurry supplementing pump alternating-current contactor 1.2.8.7, and the liquid level control system comprises a compensation slurry preparation tank, a slurry mixing device, a suction pipeline connected with a No. 1 bin 7 and a No. 2 bin 9, a manifold for a jet mixing hopper connected with the No. 1 bin 7 and the compensation slurry preparation tank and a slurry mixing device connected with the compensation slurry preparation tank and the slurry mixing device.
The slurry pump 10 is arranged between the suction pipelines to drive the suction pipelines to suck slurry in the No. 2 bin 9 to the No. 1 bin 7, the slurry supplementing pump 11 is arranged between the spray mixing hopper manifolds to convey slurry configured in the compensation slurry preparation tank to the No. 1 bin 7, and the sand pump 4 is arranged between the slurry mixing devices to convey mixed slurry raw materials to the compensation slurry preparation tank.
Be equipped with shale shaker 8 on the # storehouse 7, suction piping is through connecting # storehouse 9 with shale shaker 8 makes # storehouse 7 with # storehouse 9 of # 2 connects, shale shaker 8 is used for filtering and purifying follow # storehouse 9 is leading-in # storehouse 7's thick liquid, # storehouse 9 is through retrieving the pipeline connection well drilling for passing through retrieve the thick liquid that the pipeline retrieves the circulation out, be equipped with flowmeter 1.2.5.3 on retrieving the pipeline, PLC analog expansion module 1.2.3 connects flowmeter 1.2.5.3 and can read the flow that the thick liquid that flowmeter 1.2.5.3 detected was retrieved.
The PLC analog quantity expansion module 1.2.3 is connected with the vibrating screen 8 through a vibrating screen motor frequency converter 1.2.4 and is used for controlling the input frequency of the vibrating screen motor connected with the vibrating screen 8 through controlling the vibrating screen motor frequency converter 1.2.4 to control the vibrating frequency of the vibrating screen 8. The PLC controller hardware part 1.2 further comprises a vibrating screen motor intermediate relay 1.2.7.1 connected with the corresponding output contact of the PLC controller 1.2.1 and a vibrating screen motor alternating current contactor 1.2.8.1 connected with the vibrating screen motor intermediate relay 1.2.7.1, wherein the vibrating screen motor is connected with the vibrating screen motor alternating current contactor 1.2.8.1 through a vibrating screen motor frequency converter 1.2.4, and the vibrating screen motor intermediate relay 1.2.7.1 and the vibrating screen motor alternating current contactor 1.2.8.1 can be controlled to be conducted through the PLC controller 1.2.1 to start or close the vibrating screen motor frequency converter 1.2.4.
The No. 1 bin 7 is provided with a first stirrer 6, and the compensating slurry mixing tank is provided with a second stirrer 5; the PLC controller hardware part 1.2 further comprises a first stirrer motor intermediate relay 1.2.7.3 connected with the corresponding output contact of the PLC controller 1.2.1 and a first stirrer alternating-current contactor 1.2.8.3 connected with the first stirrer motor intermediate relay 1.2.7.3, and the first stirrer motor intermediate relay 1.2.7.3 and the first stirrer alternating-current contactor 1.2.8.3 can be controlled to be conducted through the PLC controller 1.2.1 to regulate and control the stirring of the first stirrer 6 in the No. 1 bin 7.
The PLC controller hardware part 1.2 further comprises a second stirrer motor intermediate relay 1.2.7.4 connected with the corresponding output contact of the PLC controller 1.2.1 and a second stirrer alternating-current contactor 1.2.8.4 connected with the second stirrer motor intermediate relay 1.2.7.4, and the PLC controller 1.2.1 can control the second stirrer motor intermediate relay 1.2.7.4 and the second stirrer alternating-current contactor 1.2.8.4 to be conducted so as to regulate and control the stirring of the second stirrer 5 in the compensation slurry tank.
In this embodiment, the power of the second stirrer 5 is 3kw, and when the second stirrer 5 stirs in the compensation slurry preparing tank, the compensation slurry preparing tank starts to prepare slurry, and the slurry prepared by the compensation slurry preparing tank can be input to the # 1 bin 7 as compensation. The power of the first stirrer 6 is 7.5kw, when the first stirrer 6 stirs in the No. 1 bin 7, the slurry conveyed by the No. 2 bin 9 and the compensation slurry preparation tank can be mixed, the slurry in the No. 1 bin 7 can be more uniform, the No. 1 bin 7 is connected with a well through a conveying pipeline and is used for conveying the slurry in the well into the well, and the circulation of the slurry circulation purification device and the well can be realized through the No. 1 bin 7 and the No. 2 bin 9.
The PLC controller hardware part 1.2 also comprises an indication and alarm part 1.2.6 connected with the corresponding output contact of the PLC controller 1.2.1, wherein the indication and alarm part comprises an automatic indicator lamp 1.2.6.4, a manual indicator lamp 1.2.6.3, an illuminating lamp 1.2.6.2 and a liquid level alarm 1.2.6.1.
In this embodiment, all the intermediate relays of the intermediate relay portion 1.2.7 are connected to the corresponding output contacts of the PLC controller 1.2.1, for transmitting the switching value signal of the PLC controller 1.2.1, and can prevent damage to the output contacts of the PLC controller 1.2.1 when overvoltage or overcurrent occurs. All ac contactors of the ac contactor portion 1.2.8 are used to provide 380V of U/V/W three-phase power to a respective motor or pump, which responds to the driving of the U/V/W three-phase power when one ac contactor is turned on by the triggering of a corresponding intermediate relay. The intermediate relay and the alternating current contactor have the earth leakage protection function.
In this embodiment, the power of the slurry pump is 11kW, and the power of the sand pump is 7.5kW, but not limited thereto.
The embodiment of the invention provides a control method of a control system of an automatic slurry circulation and purification device for hydrogeological exploration drilling, which comprises the following steps:
And the generator is used for supplying power to the whole system through the voltage-stabilizing power supply part 1.4, and after the intermediate relay and the alternating current contactor are used for performing electric leakage protection on the whole system, the remote control subsystem 1 or the near control subsystem 2 is selected as a current dominant control system according to requirements. If the near-end control subsystem 2 is selected, the start and stop control of the corresponding pump or motor can be performed at the near end, if the far-end control subsystem 1 is selected, the remote semi-automatic and automatic operation can be realized, and different systems are selected to supply power to the corresponding systems.
Referring to fig. 1 to 5, the following description will take an example of a remote control subsystem 1 as an option:
s1: the remote control subsystem 1 comprises an automatic control mode and a manual control mode, and the control mode of the remote control subsystem 1 is selected.
If a manual control mode is selected, in the manual control mode, the PLC controller 1.2.1 controls the first liquid level meter and the second liquid level meter to perform liquid level detection on the No. 1 bin 7 and the No. 2 bin 9, meanwhile, the manual indicator lamp 1.2.6.3 is on, and if the limit liquid level of the No. 1 bin 7 or the No. 2 bin 9 is reached, the liquid level alarm 1.2.6.1 is provided. If an automatic control mode is selected, full automatic operation of the mud cleaning cycle can be achieved, with the automatic indicator light 1.2.6.4 on. In particular as described in the following steps.
S2: if the control mode is an automatic control mode, detecting whether the temperature of the No. 1 bin 7 is lower than a low value, if so, starting the heating circulating pump to heat the No. 1 bin 7, otherwise, entering step S3.
And if the temperature of the No. 1 bin 7 is not lower than a low value, the heating circulating pump is turned off.
S3: and detecting whether the liquid level of the No. 1 bin 7 reaches an upper limit, stopping the purification of the slurry pumped from the No. 1 bin 9 by the No. 1 bin 7 if the liquid level of the No. 1 bin 7 reaches the upper limit, and stopping the slurry mixing device from conveying the slurry raw material, otherwise, entering a step S4.
Specifically, if the first upper level gauge 1.2.5.1 detects that the liquid level of the # 1 bin 7 reaches the upper limit, the PLC controller 1.2.1 controls to stop the vibrating screen motor to stop the vibrating screen 8 so as to stop the purification of the slurry pumped from the # 2 bin 9 by the # 1 bin 7, and the PLC controller 1.2.1 controls to stop the sand pump 4 so as to stop the slurry mixing device from conveying slurry raw materials to the compensation slurry distribution tank.
S4: and detecting whether the liquid level of the No. 2 bin 9 reaches a lower limit, stopping the purification of the slurry pumped from the No. 2 bin 9 by the No. 1 bin 7 if the liquid level of the No. 2 bin 9 reaches the lower limit, interrupting the slurry conveying of the No. 1 bin 7 by the No. 2 bin 9, interrupting the slurry conveying device to convey the slurry raw material, and otherwise, entering a step S5.
Specifically, if the second lower level gauge 1.2.5.6 detects that the liquid level of the 2# bin 9 reaches the lower limit, the liquid level alarm 1.2.6.1 alarms, and meanwhile, the PLC controller 1.2.1 controls to stop the vibrating screen motor to stop the vibrating screen 8 so as to stop the cleaning of the slurry pumped from the 2# bin 9 by the 1# bin 7, the PLC controller 1.2.1 controls to stop the slurry pump 10 so as to stop the slurry from being delivered to the 1# bin 7 by the 2# bin 9, and the PLC controller 1.2.1 controls to stop the sand pump 4 so as to stop the slurry mixing device from delivering the slurry raw material to the compensation slurry tank. If the liquid level in the # 2 bin 9 reaches the lower limit, the process can proceed to step S5 after the slurry recovered from the well to the # 2 bin 9 is required to make the liquid level in the # 2 bin 9 normal.
S5: sequentially, the slurry mixing device is continuously used for conveying slurry raw materials, a first stirrer 6 in a No. 1 bin 7 is operated, a No. 2 bin 9 is used for conveying slurry to the No. 1 bin 7, the No. 1 bin 7 is used for purifying the slurry pumped from the No. 2 bin 9, and the compensation slurry mixing tank is used for distributing the slurry.
The PLC controller 1.2.1 controls to start the sand pump 4 so as to enable the slurry mixing device to continuously convey slurry raw materials to the compensation slurry preparation tank, the PLC controller 1.2.1 controls to conduct the first stirrer alternating-current contactor 1.2.8.3 so as to enable the first stirrer 6 to operate, the PLC controller 1.2.1 controls to start the slurry pump 11 so as to continuously convey slurry to the No. 2 bin 9, the PLC controller 1.2.1 controls to start the vibrating screen motor so as to enable the No. 1 bin 7 to clean the slurry pumped from the No. 2 bin 9, and the PLC controller 1.2.1 controls the second stirrer 5 so as to enable the compensation slurry preparation tank to configure the slurry.
S6: and detecting whether the flow recovered from drilling to the No. 2 bin 9 is lower than a threshold value, and if so, enabling the compensation slurry preparation tank to convey slurry to the No. 1 bin 7.
And detecting the flow recovered to the No. 2 bin 9 through the flowmeter 1.2.5.3 on the recovery pipeline, and reading flow data detected by the flowmeter 1.2.5.3 by the PLC analog quantity expansion module 1.2.3 and transmitting the flow data to the PLC controller 1.2.1 for analysis and judgment, wherein whether the flow data is lower than a threshold value or not. If the flow recovered from the well to the No. 2 bin 9 is lower than a threshold value, the PLC controller 1.2.1 controls the slurry supplementing pump 11 to be started so that the slurry is conveyed to the No. 1 bin 7 by the slurry compensating tank.
S7: if the control mode is a manual control mode, detecting the liquid levels of the No. 1 bin 7 and the No. 2 bin 9, and if the liquid levels 9 of the No. 1 bin 7 and the No. 2 bin are in a normal range, manually controlling the start and stop of the control system; otherwise, the control system alarms.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: the control system and the method for the exploration hydrogeology drilling mud circulation purifying device have the advantages that (1) the operation is convenient, the far-end semiautomatic and automatic control can be realized at the same time, and the start and stop control of the near end can be realized; (2) The special constant-temperature control cabinet and the explosion-proof operation panel are designed, and the stable operation of the hardware part of the PLC in the cabinet under severe conditions is ensured through an air conditioner in the constant-temperature control cabinet, so that the PLC can be well adapted to complex environments of exploration sites; (3) The heating circulation system is designed, the fluidity of the slurry in severe cold weather is ensured by the heating circulation system, and meanwhile, the voltage-stabilizing power supply part is added to the whole control system, so that the stability of power supply of the control system is ensured; (4) The control system and the method of the hydrogeology exploration drilling mud circulation purification device are specially aimed at the mud purification of shallow wells in hydrogeology, and the control system adopts modularization and reliability design, so that the system has the characteristics of convenient transportation, high reliability, good adaptability and the like.
The technical scheme provided by the embodiment of the invention has the beneficial effects that: the control system and the method for the exploration hydrogeology drilling mud circulation purifying device have the advantages that (1) the operation is convenient, the far-end semiautomatic and automatic control can be realized at the same time, and the start and stop control of the near end can be realized; (2) The special constant-temperature control cabinet and the explosion-proof operation panel are designed, and the stable operation of the hardware part of the PLC in the cabinet under severe conditions is ensured through an air conditioner in the constant-temperature control cabinet, so that the PLC can be well adapted to complex environments of exploration sites; (3) The heating circulation system is designed, the fluidity of the slurry in severe cold weather is ensured by the heating circulation system, and meanwhile, the voltage-stabilizing power supply part is added to the whole control system, so that the stability of power supply of the control system is ensured; (4) The control system and the method of the hydrogeology exploration drilling mud circulation purification device are specially aimed at the mud purification of shallow wells in hydrogeology, and the control system adopts modularization and reliability design, so that the system has the characteristics of convenient transportation, high reliability, good adaptability and the like.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the protection sought herein.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. An investigation hydrogeology probing automation mud circulation purifier control system, its characterized in that: the device comprises a mud circulation purifying device, a remote control subsystem connected with the mud circulation purifying device, a liquid level control pump and a heating circulating pump;
the mud circulation purifying device comprises a No. 2 bin for recycling the slurry circulated in the drilling process and a No. 1 bin for conveying the slurry to the drilling well, wherein the No. 2 bin is connected with the No. 1 bin for conveying the slurry to the No. 1 bin;
the remote control subsystem comprises a PLC controller hardware part, wherein the PLC controller hardware part comprises a PLC controller, a PLC analog quantity expansion module communicated with the PLC controller and a sensor connected with the PLC analog quantity expansion module; the sensor comprises a thermometer arranged in the No. 1 bin, a first liquid level meter and a second liquid level meter arranged in the No. 2 bin;
The PLC hardware part also comprises a liquid level control relay group and a heating circulating pump intermediate relay, which are connected with the output contact of the PLC to be used as output switches of the corresponding output contacts, and a liquid level control alternating current contactor which is respectively connected with the liquid level control relay group and the liquid level control pump and a heating circulating pump alternating current contactor which is connected with the heating circulating pump intermediate relay and the heating circulating pump;
a heating circulation system connected with the heating circulation pump is arranged in the No. 1 bin, and the PLC controls the intermediate relay of the heating circulation pump and the alternating current contactor of the heating circulation pump to be conducted through the temperature received by the PLC and detected by the thermometer so as to control the heating circulation pump to enable the heating circulation system to respond;
the PLC controller controls the liquid level control relay group and the liquid level control alternating current contactor to be conducted through liquid levels detected by the first liquid level meter and the second liquid level meter received by the PLC controller, and controls the liquid level control pump to enable the liquid level control system to respond;
the liquid level control relay group comprises a slurry pump intermediate relay, a sand pump intermediate relay and a slurry supplementing pump intermediate relay which are connected with the corresponding output contacts, and the liquid level control alternating current contactor comprises a slurry pump alternating current contactor, a sand pump alternating current contactor and a slurry supplementing pump alternating current contactor which are respectively connected with the slurry pump intermediate relay, the sand pump intermediate relay and the slurry supplementing pump intermediate relay;
The liquid level control pump comprises a slurry pump which can be driven by the slurry pump alternating current contactor, a sand pump which can be driven by the sand pump alternating current contactor and a slurry supplementing pump which can be driven by the slurry supplementing pump alternating current contactor, and the liquid level control system comprises a compensation slurry preparation tank, a slurry mixing device, a suction pipeline connected with a No. 1 bin and a No. 2 bin, a manifold for a spray mixing hopper connected with the No. 1 bin and the compensation slurry preparation tank and a slurry mixing device connected with the compensation slurry preparation tank and the slurry mixing device;
the slurry pump is arranged between the suction pipelines and used for driving the suction pipelines to suck slurry in the No. 2 bin to the No. 1 bin, the slurry supplementing pump is arranged between the spray mixing hopper manifolds and used for conveying slurry arranged in the compensation slurry preparation tank to the No. 1 bin, and the sand pump is arranged between the slurry mixing devices and used for conveying mixed slurry raw materials to the compensation slurry preparation tank;
the heating circulation system comprises a coiled pipe and a water circulation temperature control system, the coiled pipe is arranged at the bottom of the No. 1 bin, the water circulation temperature control system comprises a heating circulation pump and a water pipe connected with the heating circulation pump and the coiled pipe, and the heating circulation pump is arranged outside the No. 1 bin.
2. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 1, wherein: the vibrating screen is arranged on the No. 1 bin, the suction pipeline is connected with the No. 1 bin and the No. 2 bin through the connection of the No. 2 bin and the vibrating screen, the PLC analog quantity expansion module is connected with the vibrating screen through a vibrating screen motor frequency converter, and the vibrating screen motor frequency converter is used for controlling the input frequency of the vibrating screen motor to control the vibrating frequency of the vibrating screen; the No. 2 bin is connected with a well through a recovery pipeline to recycle recycled slurry through the recovery pipeline, a flowmeter is arranged on the recovery pipeline, and the PLC analog expansion module is connected with the flowmeter and can read the flow of slurry recovery detected by the flowmeter.
3. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 2, wherein: the PLC controller hardware part also comprises a vibrating screen motor intermediate relay connected with a corresponding output contact of the PLC controller and a vibrating screen motor alternating current contactor connected with the vibrating screen motor intermediate relay, wherein the vibrating screen motor is connected with the vibrating screen motor alternating current contactor through a vibrating screen motor frequency converter, and the vibrating screen motor frequency converter can be started or closed by controlling the vibrating screen motor intermediate relay and the vibrating screen motor alternating current contactor to be conducted through the PLC controller.
4. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 2, wherein: the No. 1 bin is provided with a first stirrer, and the compensating slurry mixing tank is provided with a second stirrer;
the PLC controller hardware part further comprises a first stirrer motor intermediate relay connected with a corresponding output contact of the PLC controller and a first stirrer alternating current contactor connected with the first stirrer motor intermediate relay, and the PLC controller can control the first stirrer motor intermediate relay and the first stirrer alternating current contactor to be conducted so as to regulate and control the stirring of the first stirrer in the No. 1 bin;
the PLC controller hardware part also comprises a second stirrer motor intermediate relay connected with a corresponding output contact of the PLC controller and a second stirrer alternating current contactor connected with the second stirrer motor intermediate relay, and stirring of the second stirrer in the compensation slurry distribution tank can be regulated and controlled by the PLC controller through the second stirrer motor intermediate relay and the second stirrer alternating current contactor.
5. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 2, wherein: the first liquid level meter comprises a first upper liquid level meter for detecting an upper limit liquid level and a first lower liquid level meter for detecting a lower limit liquid level; the second level gauge comprises a second upper level gauge for detecting an upper limit level and the second lower level gauge for detecting a lower limit level.
6. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 5, wherein: the PLC controller hardware part also comprises an indication and alarm part connected with the corresponding output contact of the PLC controller, and the indication and alarm part comprises an automatic indicator lamp, a manual indicator lamp, an illuminating lamp and a liquid level alarm.
7. The survey hydrogeological drilling automation mud circulation purification apparatus control system of claim 1, wherein: the remote control subsystem further comprises a constant temperature control cabinet, an explosion-proof operation panel, a voltage-stabilizing power supply part and a multi-core cable, wherein the PLC hardware part is arranged in the constant temperature control cabinet, an air conditioner is further arranged in the constant temperature control cabinet and used for keeping the temperature of the constant temperature control cabinet at 5-20 ℃, the explosion-proof operation panel is connected with the PLC hardware part in the constant temperature control cabinet through the multi-core cable, and a large number of explosion-proof operation buttons for controlling the on and off of a large number of output contacts of the PLC are arranged on the explosion-proof operation panel; the constant voltage power supply part is arranged outside the constant temperature control cabinet and is used for providing stable voltage for the hardware part of the PLC in the constant temperature control cabinet.
8. A control method of a control system of an automatic slurry circulation and purification device for hydrogeological exploration drilling is characterized by comprising the following steps of: the control system comprises a mud circulation purifying device, a remote control subsystem connected with the mud circulation purifying device, a mixing device, a compensation slurry tank and a heating circulating pump;
the mud circulation purifying device comprises a No. 2 bin for recycling the slurry circulated in the drilling process and a No. 1 bin for conveying the slurry to the drilling well, wherein the No. 2 bin is connected with the No. 1 bin for conveying the slurry to the No. 1 bin; the slurry mixing device is used for conveying slurry raw materials to the compensation slurry preparation tank, the compensation slurry preparation tank is connected with the No. 1 bin and used for preparing slurry, and the heating circulating pump is used for heating the No. 1 bin;
the control method comprises the following steps:
s1: the remote control subsystem comprises an automatic control mode and a manual control mode, and the control mode of the remote control subsystem is selected;
s2: if the control mode is an automatic control mode, detecting whether the temperature of the No. 1 bin is lower than a low value, if so, starting the heating circulating pump to heat the No. 1 bin, otherwise, entering a step S3;
s3: detecting whether the liquid level of the No. 1 bin reaches an upper limit, stopping the purification of the slurry pumped from the No. 2 bin by the No. 1 bin if the liquid level of the No. 1 bin reaches the upper limit, interrupting the slurry mixing device to convey slurry raw materials, and otherwise, entering a step S4;
S4: detecting whether the liquid level of the No. 2 bin reaches a lower limit, stopping purifying the slurry pumped from the No. 2 bin by the No. 1 bin if the liquid level of the No. 2 bin reaches the lower limit, interrupting the slurry conveying of the No. 1 bin by the No. 2 bin, interrupting the slurry conveying device to convey slurry raw materials, and otherwise, entering a step S5;
s5: sequentially causing the slurry mixing device to continue to convey slurry raw materials, operating a first stirrer in the No. 1 bin, causing the No. 2 bin to convey slurry to the No. 1 bin, causing the No. 1 bin to purify slurry pumped from the No. 2 bin, and causing the compensation slurry preparing tank to configure slurry;
s6: detecting whether the flow recovered from drilling to the No. 2 bin is lower than a threshold value, if so, enabling the compensation slurry preparation tank to convey slurry to the No. 1 bin;
s7: if the control mode is a manual control mode, detecting the liquid levels of the No. 1 bin and the No. 2 bin, and if the liquid levels of the No. 1 bin and the No. 2 bin are in a normal range, manually controlling the start and stop of the control system; otherwise, the control system alarms.
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