CN109209290B - A method for grouting and sealing of coal seam pre-draining gas boreholes - Google Patents
A method for grouting and sealing of coal seam pre-draining gas boreholes Download PDFInfo
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- CN109209290B CN109209290B CN201811293859.0A CN201811293859A CN109209290B CN 109209290 B CN109209290 B CN 109209290B CN 201811293859 A CN201811293859 A CN 201811293859A CN 109209290 B CN109209290 B CN 109209290B
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- 239000003245 coal Substances 0.000 title claims abstract description 48
- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000005303 weighing Methods 0.000 claims abstract description 76
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 238000005553 drilling Methods 0.000 claims abstract description 37
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 120
- 238000006243 chemical reaction Methods 0.000 claims description 56
- 239000003566 sealing material Substances 0.000 claims description 43
- 239000013078 crystal Substances 0.000 claims description 41
- 230000000087 stabilizing effect Effects 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 18
- 238000000605 extraction Methods 0.000 claims description 15
- 239000004615 ingredient Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000011440 grout Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
本发明公开了一种煤层预抽瓦斯钻孔注浆密封方法，配料注浆系统包括储料仓、称重仓和拌料仓，储料仓的顶部设置有进料口，称重仓内安装有称重板和旋转刮板，拌料仓上部设置有进水管，进水管上设置有流量计和水用电磁阀，拌料仓的底部出浆口通过出浆管连接有注浆泵，注浆泵上安装有压力变送器；配料注浆控制电路包括微控制器模块、重量检测电路和压力检测电路，以及水用电磁阀控制电路和注浆泵控制电路；煤层预抽瓦斯钻孔注浆密封方法包括注浆液的配料方法和循环注浆方法。本发明的装置结构简单，结合注浆密封方法，能够有效实现煤层预抽瓦斯过程中的钻孔注浆密封，配料准确度高，钻孔注浆密封效果好，便于推广使用。
The invention discloses a method for drilling grouting and sealing of coal seam pre-draining gas. The batching grouting system includes a storage bin, a weighing bin and a mixing bin. The top of the storage bin is provided with a feeding port, and a weighing bin is installed in the weighing bin. Heavy plate and rotating scraper, the upper part of the mixing bin is provided with a water inlet pipe, the water inlet pipe is provided with a flow meter and a solenoid valve for water, and the slurry outlet at the bottom of the mixing warehouse is connected with a grouting pump through a slurry outlet pipe. A pressure transmitter is installed on it; the batching grouting control circuit includes a microcontroller module, a weight detection circuit and a pressure detection circuit, as well as a water solenoid valve control circuit and a grouting pump control circuit; coal seam pre-draining gas drilling grouting seal The method includes the batching method of grouting liquid and the circulating grouting method. The device of the invention is simple in structure, combined with the grouting sealing method, can effectively realize the drilling grouting sealing in the process of coal seam pre-draining gas, has high batching accuracy, good drilling grouting sealing effect, and is convenient for popularization and application.
Description
Technical Field
The invention belongs to the technical field of coal seam gas extraction, and particularly relates to a coal seam gas pre-extraction drilling and grouting sealing method.
Background
Along with the rapid development of coal mining technology in China, coal bed gas is a main natural factor seriously threatening the safety production of a coal mine in the production process of the coal mine, casualties and property loss caused by gas disasters are huge, in order to improve the safety of the coal mine production and improve the utilization rate of the coal mine gas, a drill hole is required to be pre-pumped with gas and the drill hole is sealed before the coal mine is mined, the pre-pumping effect of the gas is directly related to the sealing effect of the drill hole, the grouting and sealing are mainly used in the existing hole sealing method, the traditional grouting and sealing method mostly adopts a one-time grouting method, if slurry is too thick, the permeability is poor, and tiny cracks around the drill hole cannot be sealed after the slurry is solidified; if the slurry is too thin, the plugging difficulty of the two ends is large, the slurry is easy to lose, and the gas extraction effect is influenced, so that the burdening link of the hole sealing slurry is particularly important in circulating grouting, and the accuracy of burdening has important influence on the hole sealing effect. In the prior art, a coal seam pre-gas-extraction drilling and grouting sealing device integrating an automatic batching system and a circulating grouting system, which can save manpower, material resources and financial resources, and a reasonable and effective grouting sealing method thereof are also lacked.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the drilling, grouting and sealing device for pre-pumping gas in the coal seam is provided, has the advantages of simple structure, reasonable design, convenience in implementation and low cost, can effectively realize drilling, grouting and sealing in the pre-pumping gas process of the coal seam, and is high in batching accuracy, good in drilling, grouting and sealing effect, good in using effect and convenient to popularize and use.
In order to solve the technical problems, the invention adopts the technical scheme that: a coal seam gas pre-pumping drilling grouting sealing device comprises a batching grouting system and a batching grouting control circuit for controlling the batching grouting system;
the batching and grouting system comprises a storage bin, a weighing bin and a mixing bin, wherein a feed inlet is formed in the top of the storage bin, a feed opening communicated with the weighing bin is formed in the bottom of the storage bin, a weighing plate is installed at the bottom of the weighing bin, a plurality of rotary scrapers for uniformly mixing grouting hole sealing materials are arranged on the upper portion of the weighing plate, a one-way discharge valve for enabling the grouting hole sealing materials to enter the mixing bin is arranged at the middle position of the bottom of the weighing bin, a water inlet pipe is arranged on the upper portion of the mixing bin, a flow meter and a water electromagnetic valve are arranged on the water inlet pipe, a motor is arranged at the central position of the bottom of the mixing bin, a rotating shaft is connected onto an output shaft of the motor, a roller is fixedly connected onto the upper portion of the rotating shaft, a slurry outlet positioned on one side of the rotating shaft is formed in the bottom of the, the grouting pump is connected to the grout outlet pipe, the outlet end of the grouting pump is connected with a grouting pipe extending into the drilled hole, and the grouting pump is provided with a pressure transmitter for detecting grouting pressure;
the batching and grouting control circuit comprises a microcontroller module and a power supply circuit for supplying power to each power utilization module in the batching and grouting control circuit, wherein the input end of the microcontroller module is connected with a weight detection circuit for detecting the weight of the grouting hole sealing material in the weighing bin, a pressure detection circuit for detecting the grouting pressure and a flow detection circuit for detecting the water flow in the water inlet pipe; the input end of the pressure detection circuit is connected with the output end of the pressure transmitter, and the input end of the flow detection circuit is connected with the output end of the flowmeter; the output end of the microcontroller module is connected with a water electromagnetic valve control circuit, an injection pump control circuit and a motor control circuit, the water electromagnetic valve is connected with the output end of the water electromagnetic valve control circuit, the injection pump is connected with the output end of the injection pump control circuit, and the motor is connected with the output end of the motor control circuit; the power supply circuit comprises a 12V switching power supply, a 12V to 5V voltage conversion circuit connected with the output end of the 12V switching power supply, and a 5V to 3.3V voltage conversion circuit connected with the output end of the 12V to 5V voltage conversion circuit; microcontroller module is connected with 5V to 3.3V voltage conversion circuit's output, weight detection circuit all is connected with 12V switching power supply's output and 12V to 5V voltage conversion circuit's output, pressure detection circuit and flow detection circuit all are connected with 12V switching power supply's output, solenoid valve control circuit for water all is connected with 12V switching power supply's output and 5V to 3.3V voltage conversion circuit's output, grouting pump control circuit and motor control circuit all are connected with 5V to 3.3V voltage conversion circuit's output.
The 12V-5V voltage conversion circuit comprises a voltage stabilizing chip LM7805, a nonpolar capacitor C6 and a nonpolar capacitor C7, a Vin pin of the voltage stabilizing chip LM7805 is connected with a 12V voltage output end of a 12V switching power supply and is grounded through a nonpolar capacitor C6, a Vout pin of the voltage stabilizing chip LM7805 is a 5V voltage output end of the 12V-5V voltage conversion circuit and is grounded through a nonpolar capacitor C7, and a GND pin of the voltage stabilizing chip LM7805 is grounded; the 5V-3.3V voltage conversion circuit comprises a voltage stabilizing chip AMS1117, a non-polar capacitor C8, a non-polar capacitor C9 and a polar capacitor C10, wherein a Vin pin of the voltage stabilizing chip AMS1117 and one end of the non-polar capacitor C8 are connected with a 5V voltage output end of the 12V-5V voltage conversion circuit, a GND pin of the voltage stabilizing chip AMS1117, the other end of the non-polar capacitor C8, one end of the non-polar capacitor C9 and the negative electrode of the polar capacitor C10 are grounded, a Vout pin of the voltage stabilizing chip AMS1117 is connected with the other end of the non-polar capacitor C9 and the positive electrode of the polar capacitor C10 and is a 3.3V voltage output end of the 5V-3.3V voltage conversion circuit.
The coal seam gas pre-pumping drilling grouting sealing device comprises an ARM microprocessor STM32F103VET6, a first crystal oscillator circuit, a second crystal oscillator circuit and a reset circuit, wherein the first crystal oscillator circuit, the second crystal oscillator circuit and the reset circuit are connected with the ARM microprocessor STM32F103VET6, a pin 11, a pin 28, a pin 50, a pin 75 and a pin 100 of the ARM microprocessor STM32F103VET6 are all connected with a 3.3V voltage output end of a 5V-3.3V voltage conversion circuit, and a pin 10, a pin 27, a pin 49, a pin 74 and a pin 99 of the ARM microprocessor STM32F103VET6 are all grounded; the first crystal oscillator circuit comprises a crystal oscillator Y1, a crystal oscillator Y2, a non-polar capacitor C1 and a non-polar capacitor C2, wherein one end of the crystal oscillator Y1, one end of the crystal oscillator Y2 and one end of the non-polar capacitor C1 are all connected with the 8 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y2 and one end of the non-polar capacitor C2 are all connected with the 9 th pin of an ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C1 and the other end of the non-polar capacitor C2 are all grounded; the second crystal oscillator circuit comprises a crystal oscillator Y3, a non-polar capacitor C3 and a non-polar capacitor C4, wherein one end of the crystal oscillator Y3 and one end of the non-polar capacitor C3 are both connected with the 12 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y3 and one end of the non-polar capacitor C4 are both connected with the 13 th pin of the ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C3 and the other end of the non-polar capacitor C4 are both grounded; the reset circuit comprises a polar capacitor C5 and a resistor R1, the negative electrode of the polar capacitor C5 and one end of the resistor R1 are both connected with the 14 th pin of an ARM microprocessor STM32F103VET6, the positive electrode of the polar capacitor C5 is connected with the 3.3V voltage output end of the 5V-3.3V voltage conversion circuit, and the other end of the resistor R1 is grounded.
The weight detection circuit comprises a weighing sensor U4 with the model number DYLY-103, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, an amplifier AR1 and an amplifier AR2 with the model numbers AD8072 JN; the weighing sensor U4 is installed at the bottom of a weighing plate, a VCC pin of the weighing sensor U4 is connected with a 12V voltage output end of a 12V switching power supply, a GND pin of the weighing sensor U4 is grounded, a 2 nd pin of the amplifier AR1 is connected with a SIG + pin of the weighing sensor U4 through a resistor R4 and is connected with a 1 st pin of the amplifier AR1 through a resistor R2, a 3 rd pin of the amplifier AR1 is connected with a SIG-pin of the weighing sensor U4 through a resistor R5 and is connected with one end of a resistor R6, a 4 th pin of the amplifier AR1 and the other end of the resistor R6 are both grounded, and an 8 th pin of the amplifier AR1 is connected with a 5V voltage output end of a 12V-5V voltage conversion circuit; the 2 nd pin of amplifier AR2 is connected with the 1 st pin of amplifier AR1 through resistance R7, and is connected with the 1 st pin of amplifier AR2 through resistance R3, the 3 rd pin of amplifier AR2 is connected with one end of resistance R8, the 4 th pin of amplifier AR2 and the other end of resistance R8 all ground, the 8 th pin of amplifier AR2 is connected with the 5V voltage output end of 12V to 5V voltage conversion circuit, the 1 st pin of amplifier AR2 is connected with the 16 th pin of ARM STM microprocessor 32F103VET 6.
The coal seam gas pre-drainage drilling grouting sealing device is characterized in that the pressure transmitter is a pressure transmitter U5 with the model of CYB-22S, and the pressure detection circuit comprises a switch diode D1, a voltage stabilizing diode D2, a nonpolar capacitor C11, a nonpolar capacitor C12 and a nonpolar capacitor C13; the VCC pin of pressure transmitter U5 is connected with switch diode D1's positive pole, switch diode D1's negative pole, zener diode D2's negative pole, nonpolar electric capacity C11's one end and nonpolar electric capacity C12's one end all are connected with 12V switching power supply's 12V voltage output end, pressure transmitter U5's SIG pin, zener diode D2's positive pole, nonpolar electric capacity C11's the other end, nonpolar electric capacity C12's the other end and nonpolar electric capacity C13's one end all are connected with ARM microprocessor STM32F103VET 6's the 17 th pin, pressure transmitter U5's GND pin and nonpolar electric capacity C13's the other end all ground connection.
The coal seam gas pre-pumping drilling grouting sealing device comprises a flow meter, wherein the flow meter is a turbine type flow meter U6, the flow detection circuit comprises a nonpolar capacitor C14, a nonpolar capacitor C15 and a nonpolar capacitor C16, one end of a VCC pin of the flow meter U6, one end of a nonpolar capacitor C14 and one end of a nonpolar capacitor C15 are connected with a 12V voltage output end of a 12V switching power supply, an SIG pin of the flow meter U6, the other end of the nonpolar capacitor C14, the other end of a nonpolar capacitor C15 and one end of the nonpolar capacitor C16 are connected with an 18 th pin of an ARM microprocessor STM32F103VET6, and the GND pin of the flow meter U6 and the other end of the nonpolar capacitor C16 are grounded.
The coal seam gas pre-pumping drilling grouting sealing device comprises an electromagnetic relay KM1, a triode Q1, a switch diode D3 and a resistor R9, wherein the base electrode of the triode Q1 is connected with the 34 th pin of an ARM microprocessor STM32F103VET6 through a resistor R9, the emitter electrode of the triode Q1 is connected with the 3.3V voltage output end of a 5V to 3.3V voltage conversion circuit, the collector electrode of the triode Q1 and the cathode of the switch diode D3 are both connected with one end of a coil of an electromagnetic relay KM1, the anode of the switch diode D3 and the other end of the coil of the electromagnetic relay KM1 are both grounded, the common contact of the electromagnetic relay KM1 is connected with the positive electrode of a water-used power supply, the normally open contact of the electromagnetic relay KM1 is connected with the 12V voltage output end of the water-used electromagnetic valve 12V switch power supply, and the normally closed contact of the electromagnetic relay KM1 is suspended, and the negative electrode of the power supply of the water electromagnetic valve is grounded.
The grouting pump control circuit comprises an electromagnetic relay KM2, a triode Q2, a switch diode D4 and a resistor R10, the base of the transistor Q2 is connected with the 63 rd pin of the ARM microprocessor STM32F103VET6 through a resistor R10, the emitter of the triode Q2 is connected with the 3.3V output terminal of the 5V to 3.3V voltage conversion circuit, the collector of the triode Q2 and the cathode of the switching diode D4 are both connected with one end of the coil of the electromagnetic relay KM2, the anode of the switching diode D4 and the other end of the coil of the electromagnetic relay KM2 are both grounded, the common contact of the electromagnetic relay KM2 is connected with the positive electrode of the power supply of the grouting pump, the normally open contact of the electromagnetic relay KM2 is connected with the output end VCC of the power supply of the grouting pump, the normally closed contact of the electromagnetic relay KM2 is suspended, and the negative electrode of the power supply of the grouting pump is grounded.
The drilling and grouting sealing device for pre-extracting gas from coal seams comprises a motor control circuit, an electromagnetic relay KM3, a triode Q3, a switch diode D5 and a resistor R11, the base of the transistor Q3 is connected with the 64 th pin of the ARM microprocessor STM32F103VET6 through a resistor R11, the emitter of the triode Q3 is connected with the 3.3V output terminal of the 5V to 3.3V voltage conversion circuit, the collector of the triode Q3 and the cathode of the switching diode D5 are both connected with one end of the coil of the electromagnetic relay KM3, the anode of the switching diode D5 and the other end of the coil of the electromagnetic relay KM3 are both grounded, the common contact of the electromagnetic relay KM3 is connected with the positive electrode of the power supply of the motor, the normally open contact of the electromagnetic relay KM3 is connected with the output end VCC of the power supply of the motor, the normally closed contact of the electromagnetic relay KM3 is suspended, and the negative pole of the power supply of the motor is grounded.
The invention also discloses a coal seam gas pre-extraction drilling grouting sealing method, which comprises the following steps:
the method comprises the following steps of firstly, mixing grouting hole sealing materials, and specifically:
step 101, closing a one-way discharge valve at the bottom of a weighing bin;
102, feeding grouting hole sealing materials into a storage bin through a feed inlet at the top of the storage bin, and feeding the grouting hole sealing materials into a weighing bin through a feed outlet at the bottom of the storage bin;
103, driving a plurality of rotary scrapers arranged in the weighing bin to rotate by the falling gravity of the grouting hole sealing materials in the weighing bin, and uniformly mixing the grouting hole sealing materials;
104, a weight detection circuit detects the weight of the grouting hole sealing material in the weighing bin in real time and outputs a detected weight value signal to a microcontroller module, and the microcontroller module records and stores the weight value signal of the grouting hole sealing material in the weighing bin;
105, opening a one-way discharge valve at the bottom of the weighing bin;
106, allowing the grouting hole sealing material in the weighing bin to enter a mixing bin through a one-way discharge valve;
step 107, the microcontroller module controls the opening of the water electromagnetic valve through the water electromagnetic valve control circuit and injects water into the mixing bin; the flow meter detects the water injection flow and outputs a detected water injection flow value signal to the microcontroller module through the flow detection circuit, the microcontroller module compares the water injection flow value signal detected in real time with a preset water quantity value required by ingredients, and when the water injection flow value reaches the preset water quantity value required by ingredients, the microcontroller module controls the water electromagnetic valve to close through the water electromagnetic valve control circuit, stops water injection and realizes accurate ingredients;
step 108, the microcontroller module controls a motor arranged at the bottom of the mixing bin to work through a motor control circuit, the motor drives a rotating shaft to rotate, and the rotating shaft drives a roller to rotate so as to mix the grouting hole sealing materials;
step two, circulating grouting, which comprises the following specific processes: the microcontroller module controls the grouting pump to be opened through a grouting pump control circuit, under the action of the grouting pump, the uniformly mixed grouting hole sealing materials enter a grout outlet pipe through a grout outlet at the bottom of the mixing bin and are conveyed into a coal seam gas pre-drainage drill hole through a grouting pipe to seal the coal seam gas pre-drainage; meanwhile, the pressure transmitter detects the grouting pressure in real time and outputs a detected grouting pressure value signal to the microcontroller module through the pressure detection circuit, and the microcontroller module records the grouting pressure value.
Compared with the prior art, the invention has the following advantages:
1. the coal seam gas pre-pumping drilling grouting sealing device is simple in structure, reasonable in design, convenient to achieve and low in cost.
2. The grouting hole sealing material is weighed by the weighing plate in the weighing bin, water quantity corresponding to the weight of the grouting hole sealing material is injected by the water inlet pipe at the upper part of the mixing bin, the grouting hole sealing material is uniformly stirred in the mixing bin through the roller, a material mixing link is completed, and the material mixing accuracy is high.
3. The invention adopts the pressure transmitter arranged on the grouting pump to monitor the grouting pressure in the grouting process in real time, so as to carry out circulating grouting, and the grouting sealing effect of the drill hole is good.
4. The grouting sealing method of the coal seam gas pre-drainage drilling grouting sealing device is simple, reasonable and effective, can give full play to the structural characteristics of the coal seam gas pre-drainage drilling grouting sealing device, and achieves the purposes of accurate proportioning and circulating grouting.
5. The method can effectively realize the drilling grouting sealing in the coal seam gas pre-pumping process, and has high material mixing accuracy and good drilling grouting sealing effect; meanwhile, the batching and grouting control circuit with simple circuit structure and high working reliability is provided; the invention has good use effect and is convenient for popularization and use.
In conclusion, the drilling and grouting sealing device for pre-pumping gas in the coal seam is simple in structure, reasonable in design, convenient to implement, low in cost, capable of effectively achieving drilling and grouting sealing in the pre-pumping gas process of the coal seam, high in proportioning accuracy, good in drilling and grouting sealing effect, good in using effect and convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of a coal seam pre-gas-extraction drilling grouting sealing device of the invention;
FIG. 2 is a schematic block diagram of the circuit of the batch grouting control circuit of the present invention;
FIG. 3 is a schematic circuit diagram of a 12V to 5V voltage conversion circuit according to the present invention;
FIG. 4 is a schematic circuit diagram of a 5V to 3.3V voltage conversion circuit according to the present invention;
FIG. 5 is a circuit schematic of a microcontroller module of the present invention;
FIG. 6 is a schematic circuit diagram of the weight sensing circuit of the present invention;
FIG. 7 is a circuit schematic of the pressure sensing circuit of the present invention;
FIG. 8 is a circuit schematic of the flow sensing circuit of the present invention;
FIG. 9 is a schematic circuit diagram of the water solenoid control circuit of the present invention;
FIG. 10 is a schematic circuit diagram of a grouting pump control circuit of the present invention;
fig. 11 is a circuit schematic of the motor control circuit of the present invention.
Description of reference numerals:
1-a microcontroller module; 2, a storage bin; 3-weighing bin;
4-mixing bunker; 5, a flow meter; 6, a feeding hole;
7-a feed opening; 8, weighing plate; 9-a rotating scraper;
10-one-way bleeder valve; 11-a roller; 12-a rotating shaft;
13-a pulp outlet; 14-electromagnetic valve for water; 15-grouting pump;
16-a motor; 17-grouting pipe; 18-a flow detection circuit;
19-a pressure transmitter; 20-a water inlet pipe; 21-slurry outlet pipe;
22-weight detection circuit; 23-a pressure detection circuit;
24-water electromagnetic valve control circuit; 25-grouting pump control circuit;
26-a power supply circuit; 26-1-12V switching power supply;
26-2-12V to 5V voltage conversion circuit; 26-3-5V to 3.3V voltage conversion circuit;
27-motor control circuit.
Detailed Description
The invention relates to a coal seam gas pre-pumping drilling grouting sealing device which comprises a batching grouting system and a batching grouting control circuit for controlling the batching grouting system;
as shown in fig. 1, the ingredient grouting system comprises a storage bin 2, a weighing bin 3 and a mixing bin 4, a feed inlet 6 is arranged at the top of the storage bin 2, a feed outlet 7 communicated with the weighing bin 3 is arranged at the bottom of the storage bin 2, a weighing plate 8 is installed at the bottom of the weighing bin 3, a plurality of rotary scrapers 9 for uniformly mixing the grouting hole sealing materials are arranged at the upper part of the weighing plate 8, a one-way discharge valve 10 for feeding the grouting hole sealing materials into the mixing bin 4 is arranged at the middle position of the bottom of the weighing bin 3, a water inlet pipe 20 is arranged at the upper part of the mixing bin 4, a flow meter 5 and a water electromagnetic valve 14 are arranged on the water inlet pipe 20, a motor 16 is arranged at the center position of the bottom of the mixing bin 4, a rotating shaft 12 is connected to an output shaft of the motor 16, and a roller 11 is fixedly connected to the upper part of the rotating shaft 12, the bottom of the mixing bin 4 is provided with a slurry outlet 13 positioned on one side of the rotating shaft 12, the slurry outlet 13 is connected with a slurry outlet pipe 21, the slurry outlet pipe 21 is connected with a grouting pump 15, the outlet end of the grouting pump 15 is connected with a grouting pipe 17 extending into a drilled hole, and the grouting pump 15 is provided with a pressure transmitter 19 for detecting grouting pressure;
with reference to fig. 2, the ingredient grouting control circuit includes a microcontroller module 1 and a power circuit 26 for supplying power to each power consumption module in the ingredient grouting control circuit, and an input end of the microcontroller module 1 is connected with a weight detection circuit 22 for detecting the weight of the grouting hole sealing material in the weighing bin 3, a pressure detection circuit 23 for detecting the grouting pressure, and a flow detection circuit 18 for detecting the flow of water in the water inlet pipe 20; the input end of the pressure detection circuit 23 is connected with the output end of the pressure transmitter 19, and the input end of the flow detection circuit 18 is connected with the output end of the flowmeter 5; the output end of the microcontroller module 1 is connected with a water electromagnetic valve control circuit 24, a grouting pump control circuit 25 and a motor control circuit 27, the water electromagnetic valve 14 is connected with the output end of the water electromagnetic valve control circuit 24, the grouting pump 15 is connected with the output end of the grouting pump control circuit 25, and the motor 16 is connected with the output end of the motor control circuit 27; the power supply circuit 26 comprises a 12V switching power supply 26-1, a 12V to 5V voltage conversion circuit 26-2 connected with the output end of the 12V switching power supply 26-1, and a 5V to 3.3V voltage conversion circuit 26-3 connected with the output end of the 12V to 5V voltage conversion circuit 26-2; the micro-controller module 1 is connected with the output end of a 5V to 3.3V voltage conversion circuit 26-3, the weight detection circuit 22 is connected with the output end of a 12V switching power supply 26-1 and the output end of a 12V to 5V voltage conversion circuit 26-2, the pressure detection circuit 23 and the flow detection circuit 18 are connected with the output end of the 12V switching power supply 26-1, the electromagnetic valve control circuit 24 for water is connected with the output end of the 12V switching power supply 26-1 and the output end of the 5V to 3.3V voltage conversion circuit 26-3, and the grouting pump control circuit 25 and the motor control circuit 27 are connected with the output end of the 5V to 3.3V voltage conversion circuit 26-3.
In this embodiment, as shown in fig. 3, the 12V to 5V voltage converting circuit 26-2 includes a voltage stabilizing chip LM7805, a non-polar capacitor C6 and a non-polar capacitor C7, a Vin pin of the voltage stabilizing chip LM7805 is connected to a 12V voltage output terminal of the 12V switching power supply 26-1 and is grounded through the non-polar capacitor C6, a Vout pin of the voltage stabilizing chip LM7805 is a 5V voltage output terminal of the 12V to 5V voltage converting circuit 26-2 and is grounded through the non-polar capacitor C7, and a GND pin of the voltage stabilizing chip LM7805 is grounded; as shown in fig. 4, the 5V to 3.3V voltage converting circuit 26-3 includes a voltage stabilizing chip AMS1117, a non-polar capacitor C8, a non-polar capacitor C9 and a polar capacitor C10, wherein a Vin pin of the voltage stabilizing chip AMS1117 and one end of the non-polar capacitor C8 are both connected to the 5V voltage output terminal of the 12V to 5V voltage converting circuit 26-2, a GND pin of the voltage stabilizing chip AMS1117, the other end of the non-polar capacitor C8, one end of the non-polar capacitor C9 and a cathode of the polar capacitor C10 are all grounded, a Vout pin of the voltage stabilizing chip AMS1117 is connected to the other end of the non-polar capacitor C9 and an anode of the polar capacitor C10, and is a 3.3V voltage output terminal of the 5V to 3.3V voltage converting circuit 26-3.
In this embodiment, as shown in fig. 5, the microcontroller module 1 includes an ARM microprocessor STM32F103VET6, and a first crystal oscillator circuit, a second crystal oscillator circuit, and a reset circuit connected to an ARM microprocessor STM32F103VET6, where the 11 th pin, the 28 th pin, the 50 th pin, the 75 th pin, and the 100 th pin of the ARM microprocessor STM32F103VET6 are all connected to a 3.3V voltage output terminal of a 5V to 3.3V voltage conversion circuit 26-3, and the 10 th pin, the 27 th pin, the 49 th pin, the 74 th pin, and the 99 th pin of the ARM microprocessor STM32F103VET6 are all grounded; the first crystal oscillator circuit comprises a crystal oscillator Y1, a crystal oscillator Y2, a non-polar capacitor C1 and a non-polar capacitor C2, wherein one end of the crystal oscillator Y1, one end of the crystal oscillator Y2 and one end of the non-polar capacitor C1 are all connected with the 8 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y2 and one end of the non-polar capacitor C2 are all connected with the 9 th pin of an ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C1 and the other end of the non-polar capacitor C2 are all grounded; the second crystal oscillator circuit comprises a crystal oscillator Y3, a non-polar capacitor C3 and a non-polar capacitor C4, wherein one end of the crystal oscillator Y3 and one end of the non-polar capacitor C3 are both connected with the 12 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y3 and one end of the non-polar capacitor C4 are both connected with the 13 th pin of the ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C3 and the other end of the non-polar capacitor C4 are both grounded; the reset circuit comprises a polar capacitor C5 and a resistor R1, the negative electrode of the polar capacitor C5 and one end of the resistor R1 are both connected with the 14 th pin of an ARM microprocessor STM32F103VET6, the positive electrode of the polar capacitor C5 is connected with the 3.3V voltage output end of the 5V-3.3V voltage conversion circuit 26-3, and the other end of the resistor R1 is grounded.
In this embodiment, as shown in fig. 6, the weight detecting circuit 22 includes a load cell U4 with model number DYLY-103, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, and an amplifier AR1 and an amplifier AR2 with model numbers AD8072 JN; the weighing sensor U4 is installed at the bottom of a weighing plate 8, a VCC pin of the weighing sensor U4 is connected with a 12V voltage output end of a 12V switching power supply 26-1, a GND pin of the weighing sensor U4 is grounded, a 2 nd pin of an amplifier AR1 is connected with a SIG + pin of a weighing sensor U4 through a resistor R4 and is connected with a 1 st pin of an amplifier AR1 through a resistor R2, a 3 rd pin of the amplifier AR1 is connected with a SIG-pin of the weighing sensor U4 through a resistor R5 and is connected with one end of a resistor R6, a 4 th pin of the amplifier AR1 and the other end of the resistor R6 are both grounded, and an 8 th pin of the amplifier AR1 is connected with a 5V voltage output end of a 12V-5V voltage conversion circuit 26-2; the 2 nd pin of amplifier AR2 is connected with the 1 st pin of amplifier AR1 through resistance R7, and is connected with the 1 st pin of amplifier AR2 through resistance R3, the 3 rd pin of amplifier AR2 is connected with one end of resistance R8, the 4 th pin of amplifier AR2 and the other end of resistance R8 all ground, the 8 th pin of amplifier AR2 is connected with the 5V voltage output end of 12V to 5V voltage conversion circuit 26-2, the 1 st pin of amplifier AR2 is connected with the 16 th pin of ARM microprocessor STM32F103VET 6.
During specific implementation, the weighing sensor U4 is installed at the bottom of the weighing plate 8 and is used for weighing the grouting hole sealing material in the weighing bin 3.
In this embodiment, as shown in fig. 7, the pressure transmitter 19 is a pressure transmitter U5 with a model of CYB-22S, and the pressure detection circuit 23 includes a switching diode D1, a zener diode D2, a non-polar capacitor C11, a non-polar capacitor C12, and a non-polar capacitor C13; the VCC pin of pressure transmitter U5 is connected with switch diode D1's positive pole, switch diode D1's negative pole, zener diode D2's negative pole, nonpolar electric capacity C11's one end and nonpolar electric capacity C12's one end all are connected with 12V switching power supply 26-1's 12V voltage output end, pressure transmitter U5's SIG pin, zener diode D2's positive pole, nonpolar electric capacity C11's the other end, nonpolar electric capacity C12's the other end and nonpolar electric capacity C13's one end all are connected with ARM microprocessor 32F103VET 6's the 17 th pin, pressure transmitter U5's GND pin and nonpolar electric capacity C13's the other end all ground connection.
In particular implementation, the pressure transmitter 19 is used to detect the grouting pressure in the grouting pump 15.
In this embodiment, as shown in fig. 8, the flow meter 5 is a turbine flow meter U6, the flow detection circuit 18 includes a non-polar capacitor C14, a non-polar capacitor C15, and a non-polar capacitor C16, a VCC pin of the flow meter U6, one end of the non-polar capacitor C14, and one end of the non-polar capacitor C15 are all connected to a 12V voltage output terminal of the 12V switching power supply 26-1, a SIG pin of the flow meter U6, the other end of the non-polar capacitor C14, the other end of the non-polar capacitor C15, and one end of the non-polar capacitor C16 are all connected to an 18 th pin of an ARM microprocessor STM32F103VET6, and a GND pin of the flow meter U6 and the other end of the non-polar capacitor C16 are all grounded.
In specific implementation, the flowmeter 5 is used for detecting the water flow in the water inlet pipe 20.
In this embodiment, as shown in fig. 9, the water solenoid valve control circuit 24 includes an electromagnetic relay KM1, a triode Q1, a switching diode D3 and a resistor R9, a base of the triode Q1 is connected to a 34 th pin of an ARM microprocessor STM32F103VET6 through a resistor R9, an emitter of the triode Q1 is connected to a 3.3V voltage output terminal of a 5V to 3.3V voltage conversion circuit 26-3, a collector of the triode Q1 and a cathode of the switching diode D3 are both connected to one end of a coil of an electromagnetic relay KM1, an anode of the switching diode D3 and the other end of the coil of the electromagnetic relay KM1 are both grounded, a common contact of the electromagnetic relay KM1 is connected to a power supply positive electrode of the water solenoid valve 14, a normally open contact of the electromagnetic relay KM1 is connected to a 12V voltage output terminal of a 12V switching power supply 26-1 of the water solenoid valve 14, a suspended contact of the normally closed relay KM1, the negative electrode of the power supply of the electromagnetic valve for water 14 is grounded.
In this embodiment, as shown in fig. 10, the grouting pump control circuit 25 includes an electromagnetic relay KM2, a transistor Q2, a switching diode D4, and a resistor R10, the base of the transistor Q2 is connected with the 63 rd pin of the ARM microprocessor STM32F103VET6 through a resistor R10, the emitter of the transistor Q2 is connected to the 3.3V output of the 5V to 3.3V voltage conversion circuit 26-3, the collector of the triode Q2 and the cathode of the switching diode D4 are both connected with one end of the coil of the electromagnetic relay KM2, the anode of the switching diode D4 and the other end of the coil of the electromagnetic relay KM2 are both grounded, the common contact of the electromagnetic relay KM2 is connected with the positive electrode of the power supply of the grouting pump 15, the normally open contact of the electromagnetic relay KM2 is connected with the output end VCC of the power supply of the grouting pump 15, the normally closed contact of the electromagnetic relay KM2 is suspended, and the negative electrode of the power supply of the grouting pump 15 is grounded.
In this embodiment, as shown in fig. 11, the motor control circuit 27 includes an electromagnetic relay KM3, a transistor Q3, a switching diode D5, and a resistor R11, the base of the transistor Q3 is connected with the 64 th pin of the ARM microprocessor STM32F103VET6 through a resistor R11, the emitter of the transistor Q3 is connected to the 3.3V output of the 5V to 3.3V voltage conversion circuit 26-3, the collector of the triode Q3 and the cathode of the switching diode D5 are both connected with one end of the coil of the electromagnetic relay KM3, the anode of the switching diode D5 and the other end of the coil of the electromagnetic relay KM3 are both grounded, the common contact of the electromagnetic relay KM3 is connected with the positive pole of the power supply of the motor 16, the normally open contact of the electromagnetic relay KM3 is connected with the output end VCC of the power supply of the motor 16, the normally closed contact of the electromagnetic relay KM3 is suspended, and the power negative electrode of the motor 16 is grounded.
The invention discloses a coal seam gas pre-pumping drilling grouting sealing method, which comprises the following steps:
the method comprises the following steps of firstly, mixing grouting hole sealing materials, and specifically:
step 101, closing a one-way discharge valve 10 at the bottom of the weighing bin 3;
102, feeding grouting hole sealing materials into a storage bin 2 through a feeding hole 6 at the top of the storage bin 2, and feeding the grouting hole sealing materials into a weighing bin 3 through a discharging hole 7 at the bottom of the storage bin 2;
103, driving a plurality of rotary scrapers 9 arranged in the weighing bin 3 to rotate by the falling gravity of the grouting hole sealing materials in the weighing bin 3, and uniformly mixing the grouting hole sealing materials;
104, the weight detection circuit 22 detects the weight of the grouting hole sealing material in the weighing bin 3 in real time and outputs a detected weight value signal to the microcontroller module 1, and the microcontroller module 1 records and stores the weight value signal of the grouting hole sealing material in the weighing bin 3;
105, opening a one-way discharge valve 10 at the bottom of the weighing bin 3;
106, allowing the grouting hole sealing material in the weighing bin 3 to enter a mixing bin 4 through a one-way discharge valve 10;
step 107, the microcontroller module 1 controls the opening of the electromagnetic valve for water 14 through the electromagnetic valve for water control circuit 24, and injects water into the mixing bin 4; the flowmeter 5 detects the water injection flow and outputs a detected water injection flow value signal to the microcontroller module 1 through the flow detection circuit 18, the microcontroller module 1 compares the water injection flow value signal detected in real time with a preset water quantity value required for batching, and when the water injection flow value reaches the preset water quantity value required for batching, the microcontroller module 1 controls the water electromagnetic valve 14 to close through the water electromagnetic valve control circuit 24, stops water injection and realizes accurate batching;
step 108, the microcontroller module 1 controls a motor 16 arranged at the bottom of the mixing bin 4 to work through a motor control circuit 27, the motor 16 drives a rotating shaft 12 to rotate, and the rotating shaft 12 drives a roller 11 to rotate so as to mix the grouting hole sealing materials;
step two, circulating grouting, which comprises the following specific processes: the microcontroller module 1 controls the grouting pump 15 to be opened through the grouting pump control circuit 25, under the action of the grouting pump 15, the uniformly mixed grouting hole sealing material enters the grout outlet pipe 21 through the grout outlet 13 at the bottom of the mixing bin 4 and is conveyed into the coal seam gas pre-pumping drill hole through the grouting pipe 17 to seal the coal seam gas pre-pumping; meanwhile, the pressure transmitter 19 detects the grouting pressure in real time and outputs a detected grouting pressure value signal to the microcontroller module 1 through the pressure detection circuit 23, and the microcontroller module 1 records the grouting pressure value.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A coal seam gas pre-extraction drilling grouting sealing method comprises a batching grouting system and a batching grouting control circuit for controlling the batching grouting system; the batching grouting system comprises a storage bin (2), a weighing bin (3) and a mixing bin (4), wherein a feeding hole (6) is formed in the top of the storage bin (2), a discharging hole (7) communicated with the weighing bin (3) is formed in the bottom of the storage bin (2), a weighing plate (8) is installed at the bottom of the weighing bin (3), a plurality of rotary scraping plates (9) used for uniformly mixing the grouting hole sealing materials are arranged on the upper portion of the weighing plate (8), a one-way discharging valve (10) used for enabling the grouting hole sealing materials to enter the mixing bin (4) is arranged at the middle position of the bottom of the weighing bin (3), a water inlet pipe (20) is arranged on the upper portion of the mixing bin (4), a flow meter (5) and a water mixing electromagnetic valve (14) are arranged on the water inlet pipe (20), and a motor (16) is arranged at the central position of the bottom of the mixing bin (4), the slurry mixing device is characterized in that a rotating shaft (12) is connected to an output shaft of the motor (16), a roller (11) is fixedly connected to the upper portion of the rotating shaft (12), a slurry outlet (13) located on one side of the rotating shaft (12) is formed in the bottom of the material mixing bin (4), a slurry outlet pipe (21) is connected to the slurry outlet (13), a grouting pump (15) is connected to the slurry outlet pipe (21), a grouting pipe (17) extending into a drill hole is connected to the outlet end of the grouting pump (15), and a pressure transmitter (19) for detecting grouting pressure is mounted on the grouting pump (15); the batching and grouting control circuit comprises a microcontroller module (1) and a power supply circuit (26) for supplying power to each power utilization module in the batching and grouting control circuit, wherein the input end of the microcontroller module (1) is connected with a weight detection circuit (22) for detecting the weight of grouting hole sealing materials in the weighing bin (3), a pressure detection circuit (23) for detecting grouting pressure and a flow detection circuit (18) for detecting the flow of water in the water inlet pipe (20); the input end of the pressure detection circuit (23) is connected with the output end of the pressure transmitter (19), and the input end of the flow detection circuit (18) is connected with the output end of the flowmeter (5); the output end of the microcontroller module (1) is connected with a water electromagnetic valve control circuit (24), a grouting pump control circuit (25) and a motor control circuit (27), the water electromagnetic valve (14) is connected with the output end of the water electromagnetic valve control circuit (24), the grouting pump (15) is connected with the output end of the grouting pump control circuit (25), and the motor (16) is connected with the output end of the motor control circuit (27); the power supply circuit (26) comprises a 12V switching power supply (26-1) and a 12V to 5V voltage conversion circuit (26-2) connected with the output end of the 12V switching power supply (26-1), and a 5V to 3.3V voltage conversion circuit (26-3) connected with the output end of the 12V to 5V voltage conversion circuit (26-2); the microcontroller module (1) is connected with the output end of the 5V to 3.3V voltage conversion circuit (26-3), the weight detection circuit (22) is connected with the output end of the 12V switching power supply (26-1) and the output end of the 12V to 5V voltage conversion circuit (26-2), the pressure detection circuit (23) and the flow detection circuit (18) are both connected with the output end of a 12V switching power supply (26-1), the water electromagnetic valve control circuit (24) is connected with the output end of a 12V switching power supply (26-1) and the output end of a 5V to 3.3V voltage conversion circuit (26-3), the grouting pump control circuit (25) and the motor control circuit (27) are both connected with the output end of the 5V to 3.3V voltage conversion circuit (26-3), and the method is characterized by comprising the following steps:
the method comprises the following steps of firstly, mixing grouting hole sealing materials, and specifically:
step 101, closing a one-way discharge valve (10) at the bottom of a weighing bin (3);
102, feeding the grouting hole sealing material into a storage bin (2) through a feeding hole (6) at the top of the storage bin (2), and feeding the grouting hole sealing material into a weighing bin (3) through a feeding hole (7) at the bottom of the storage bin (2);
103, driving a plurality of rotary scrapers (9) arranged in the weighing bin (3) to rotate by the falling gravity of the grouting hole sealing materials in the weighing bin (3), and uniformly mixing the grouting hole sealing materials;
104, a weight detection circuit (22) detects the weight of the grouting hole sealing material in the weighing bin (3) in real time and outputs a detected weight value signal to a microcontroller module (1), and the microcontroller module (1) records and stores the weight value signal of the grouting hole sealing material in the weighing bin (3);
105, opening a one-way discharge valve (10) at the bottom of the weighing bin (3);
106, allowing the grouting hole sealing material in the weighing bin (3) to enter a mixing bin (4) through a one-way discharge valve (10);
step 107, the microcontroller module (1) controls the opening of the electromagnetic valve (14) for water through the electromagnetic valve control circuit (24) for water, and water is injected into the mixing bin (4); the flow meter (5) detects the water injection flow and outputs a detected water injection flow value signal to the microcontroller module (1) through the flow detection circuit (18), the microcontroller module (1) compares the water injection flow value signal detected in real time with a preset water quantity value required by ingredients, and when the water injection flow value reaches the preset water quantity value required by ingredients, the microcontroller module (1) controls the closing of the electromagnetic valve (14) for water through the electromagnetic valve control circuit (24) for water, stops water injection and realizes accurate ingredients;
108, controlling a motor (16) arranged at the bottom of the mixing bin (4) to work by the microcontroller module (1) through a motor control circuit (27), driving a rotating shaft (12) to rotate by the motor (16), driving a roller (11) to rotate by the rotating shaft (12), and mixing the grouting hole sealing materials;
step two, circulating grouting, which comprises the following specific processes: the microcontroller module (1) controls an injection pump (15) to be opened through an injection pump control circuit (25), under the action of the injection pump (15), the uniformly mixed grouting hole sealing materials enter a slurry outlet pipe (21) through a slurry outlet (13) at the bottom of the mixing bin (4), and are conveyed into a coal seam gas pre-pumping drill hole through a grouting pipe (17) to seal the coal seam gas pre-pumping drill hole; meanwhile, the pressure transmitter (19) detects the grouting pressure in real time and outputs a detected grouting pressure value signal to the microcontroller module (1) through the pressure detection circuit (23), and the microcontroller module (1) records the grouting pressure value.
2. The coal seam gas pre-extraction drilling grouting sealing method according to claim 1, characterized in that: the 12V-5V voltage conversion circuit (26-2) comprises a voltage stabilizing chip LM7805, a nonpolar capacitor C6 and a nonpolar capacitor C7, wherein a Vin pin of the voltage stabilizing chip LM7805 is connected with a 12V voltage output end of a 12V switching power supply (26-1) and is grounded through the nonpolar capacitor C6, a Vout pin of the voltage stabilizing chip LM7805 is a 5V voltage output end of the 12V-5V voltage conversion circuit (26-2) and is grounded through the nonpolar capacitor C7, and a GND pin of the voltage stabilizing chip LM7805 is grounded; the 5V-3.3V voltage conversion circuit (26-3) comprises a voltage stabilizing chip AMS1117, a non-polar capacitor C8, a non-polar capacitor C9 and a polar capacitor C10, wherein a Vin pin of the voltage stabilizing chip AMS1117 and one end of the non-polar capacitor C8 are connected with a 5V voltage output end of the 12V-5V voltage conversion circuit (26-2), a GND pin of the voltage stabilizing chip AMS1117, the other end of the non-polar capacitor C8, one end of the non-polar capacitor C9 and a cathode of a polar capacitor C10 are grounded, a Vout pin of the voltage stabilizing chip AMS1117 is connected with the other end of the non-polar capacitor C9 and an anode of the polar capacitor C10 and is a 3.3V voltage output end of the 5V-3.3V voltage conversion circuit (26-3).
3. The coal seam gas pre-extraction drilling grouting sealing method according to claim 1, characterized in that: the microcontroller module (1) comprises an ARM microprocessor STM32F103VET6, and a first crystal oscillator circuit, a second crystal oscillator circuit and a reset circuit which are connected with an ARM microprocessor STM32F103VET6, wherein the 11 th pin, the 28 th pin, the 50 th pin, the 75 th pin and the 100 th pin of the ARM microprocessor STM32F103VET6 are all connected with a 3.3V voltage output end of a 5V-3.3V voltage conversion circuit (26-3), and the 10 th pin, the 27 th pin, the 49 th pin, the 74 th pin and the 99 th pin of the ARM microprocessor STM32F103VET6 are all grounded; the first crystal oscillator circuit comprises a crystal oscillator Y1, a crystal oscillator Y2, a non-polar capacitor C1 and a non-polar capacitor C2, wherein one end of the crystal oscillator Y1, one end of the crystal oscillator Y2 and one end of the non-polar capacitor C1 are all connected with the 8 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y1, the other end of the crystal oscillator Y2 and one end of the non-polar capacitor C2 are all connected with the 9 th pin of an ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C1 and the other end of the non-polar capacitor C2 are all grounded; the second crystal oscillator circuit comprises a crystal oscillator Y3, a non-polar capacitor C3 and a non-polar capacitor C4, wherein one end of the crystal oscillator Y3 and one end of the non-polar capacitor C3 are both connected with the 12 th pin of an ARM microprocessor STM32F103VET6, the other end of the crystal oscillator Y3 and one end of the non-polar capacitor C4 are both connected with the 13 th pin of the ARM microprocessor STM32F103VET6, and the other end of the non-polar capacitor C3 and the other end of the non-polar capacitor C4 are both grounded; the reset circuit comprises a polar capacitor C5 and a resistor R1, the negative electrode of the polar capacitor C5 and one end of the resistor R1 are both connected with the 14 th pin of an ARM microprocessor STM32F103VET6, the positive electrode of the polar capacitor C5 is connected with the 3.3V voltage output end of a 5V-3.3V voltage conversion circuit (26-3), and the other end of the resistor R1 is grounded.
4. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the weight detection circuit (22) comprises a weighing sensor U4 with the model number DYLY-103, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a resistor R7, and an amplifier AR1 and an amplifier AR2 which are AD8072 JN; the weighing sensor U4 is installed at the bottom of a weighing plate (8), a VCC pin of the weighing sensor U4 is connected with a 12V voltage output end of a 12V switching power supply (26-1), a GND pin of the weighing sensor U4 is grounded, a 2 nd pin of the amplifier AR1 is connected with a SIG + pin of the weighing sensor U4 through a resistor R4 and is connected with a 1 st pin of an amplifier AR1 through a resistor R2, a 3 rd pin of the amplifier AR1 is connected with a SIG-pin of the weighing sensor U4 through a resistor R5 and is connected with one end of a resistor R6, a 4 th pin of the amplifier AR1 and the other end of the resistor R6 are grounded, and an 8 th pin of the amplifier AR1 is connected with a 5V voltage output end of a 12V-5V voltage conversion circuit (26-2); the 2 nd pin of the amplifier AR2 is connected with the 1 st pin of the amplifier AR1 through a resistor R7, and is connected with the 1 st pin of the amplifier AR2 through a resistor R3, the 3 rd pin of the amplifier AR2 is connected with one end of a resistor R8, the 4 th pin of the amplifier AR2 and the other end of the resistor R8 are both grounded, the 8 th pin of the amplifier AR2 is connected with the 5V voltage output end of a 12V-to-5V voltage conversion circuit (26-2), and the 1 st pin of the amplifier AR2 is connected with the 16 th pin of an ARM microprocessor STM32F103VET 6.
5. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the pressure transmitter (19) is a pressure transmitter U5 with the model number of CYB-22S, and the pressure detection circuit (23) comprises a switch diode D1, a voltage stabilizing diode D2, a non-polar capacitor C11, a non-polar capacitor C12 and a non-polar capacitor C13; pressure transmitter U5's VCC pin is connected with switch diode D1's positive pole, switch diode D1's negative pole, zener diode D2's negative pole, nonpolar electric capacity C11's one end and nonpolar electric capacity C12's one end all are connected with 12V voltage output end of 12V switching power supply (26-1), pressure transmitter U5's SIG pin, zener diode D2's positive pole, nonpolar electric capacity C11's the other end, nonpolar electric capacity C12's the other end and nonpolar electric capacity C13's one end all are connected with ARM microprocessor 32F103VET 6's the 17 th pin, pressure transmitter U5's GND pin and nonpolar electric capacity C13's the other end all ground connection.
6. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the flowmeter (5) is a turbine flowmeter U6, the flow detection circuit (18) comprises a nonpolar capacitor C14, a nonpolar capacitor C15 and a nonpolar capacitor C16, a VCC pin of the flowmeter U6, one end of the nonpolar capacitor C14 and one end of the nonpolar capacitor C15 are all connected with a 12V voltage output end of a 12V switching power supply (26-1), a SIG pin of the flowmeter U6, the other end of the nonpolar capacitor C14, the other end of the nonpolar capacitor C15 and one end of the nonpolar capacitor C16 are all connected with an 18 th pin of an ARM microprocessor STM32F103VET6, and a GND pin of the flowmeter U6 and the other end of the nonpolar capacitor C16 are all grounded.
7. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the water solenoid valve control circuit (24) comprises an electromagnetic relay KM1, a triode Q1, a switch diode D3 and a resistor R9, wherein the base electrode of the triode Q1 is connected with the 34 th pin of an ARM microprocessor STM32F103VET6 through a resistor R9, the emitter electrode of the triode Q1 is connected with the 3.3V voltage output end of a 5V-3.3V voltage conversion circuit (26-3), the collector electrode of the triode Q1 and the cathode of the switch diode D3 are both connected with one end of a coil of the electromagnetic relay KM1, the anode of the switch diode D3 and the other end of the coil of the electromagnetic relay KM1 are both grounded, the common contact of the electromagnetic relay KM1 is connected with the positive power supply electrode of the water solenoid valve (14), the normally-open contact of the electromagnetic relay KM1 is connected with the 12V voltage output end of a 12V switch power supply (26-1) of the water solenoid valve (14), and the normally closed contact of the electromagnetic relay KM1 is suspended, the negative electrode of the power supply of the electromagnetic valve (14) for water is grounded.
8. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the grouting pump control circuit (25) comprises an electromagnetic relay KM2, a triode Q2, a switch diode D4 and a resistor R10, the base of the transistor Q2 is connected with the 63 rd pin of the ARM microprocessor STM32F103VET6 through a resistor R10, the emitter of the triode Q2 is connected with the 3.3V output end of the 5V to 3.3V voltage conversion circuit (26-3), the collector of the triode Q2 and the cathode of the switching diode D4 are both connected with one end of the coil of the electromagnetic relay KM2, the anode of the switching diode D4 and the other end of the coil of the electromagnetic relay KM2 are both grounded, the common contact of the electromagnetic relay KM2 is connected with the positive electrode of the power supply of the grouting pump (15), the normally open contact of the electromagnetic relay KM2 is connected with the output end VCC of the power supply of the grouting pump (15), the normally closed contact of the electromagnetic relay KM2 is suspended, and the negative electrode of the power supply of the grouting pump (15) is grounded.
9. The coal seam gas pre-extraction drilling grouting sealing method according to claim 3, characterized in that: the motor control circuit (27) comprises an electromagnetic relay KM3, a triode Q3, a switch diode D5 and a resistor R11, the base of the transistor Q3 is connected with the 64 th pin of the ARM microprocessor STM32F103VET6 through a resistor R11, the emitter of the triode Q3 is connected with the 3.3V output end of the 5V to 3.3V voltage conversion circuit (26-3), the collector of the triode Q3 and the cathode of the switching diode D5 are both connected with one end of the coil of the electromagnetic relay KM3, the anode of the switching diode D5 and the other end of the coil of the electromagnetic relay KM3 are both grounded, the common contact of the electromagnetic relay KM3 is connected with the positive pole of the power supply of the motor (16), the normally open contact of the electromagnetic relay KM3 is connected with the output end VCC of the power supply of the motor (16), the normally closed contact of the electromagnetic relay KM3 is suspended, and the power negative electrode of the motor (16) is grounded.
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| CN111894659A (en) * | 2020-09-07 | 2020-11-06 | 中煤能源研究院有限责任公司 | Full-automatic dynamic hole sealing system |
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| CN201136222Y (en) * | 2007-11-20 | 2008-10-22 | 浙江杭钻机械制造股份有限公司 | Auto batching and pulping system |
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