A fully automatic dynamic sealing system

Abstract

The present invention discloses a fully automatic dynamic sealing system, including several execution units and a control unit for controlling the execution units; the execution unit includes an adaptive dynamic sealer and an automatic batching and grouting device, the control unit is a central controller, the adaptive dynamic sealer includes a front sealing capsule, an intermediate connecting section, and a rear sealing capsule, the automatic batching and grouting device includes a tank body, a stirring device, a feeding device, a water adding device, a boosting device, a pressure sensor and several solenoid valves; the pressure sensors are respectively located inside the feeding device, inside the tank body, and inside the grouting pipeline of the adaptive sealer. The sensor is connected to the input end of the central controller; each valve and device control end is connected to the output end of the central controller, and the central controller is used to receive signals fed back by various sensors and output control instructions to control the opening and closing of the solenoid valves and the operation of the equipment. The present invention has high automation, high control accuracy, high stability, and high safety.

Description

Technical Field

[0001] The invention belongs to the field of mine gas prevention and control, and specifically relates to a full-automatic dynamic sealing system. Background Art

[0002] Gas disaster is one of the main disasters that currently affects the safe production of coal mines. The most commonly used means of gas disaster management is extraction. During extraction, whether it is pre-extraction of the coal seam, through-layer drilling extraction, high-position drilling extraction, etc., borehole sealing is required. The effect of borehole sealing will directly affect the gas extraction efficiency. Therefore, improving the quality of borehole sealing is of great significance to the management of gas disasters.

[0003] At present, the drilling hole sealing in my country often adopts the one-time sealing method. Therefore, after the sealing is completed, if the drilling hole is disturbed by mining or the stress is affected, the hole will be broken or cracks will develop, and it will not be able to achieve automatic sealing. In addition, most of the current sealing is manual one-time sealing, which cannot achieve dynamic sealing, and the sealing effect cannot be determined. Therefore, in order to improve the sealing effect during coal seam gas extraction, reduce the sealing cost, and reduce the inevitable errors caused by manual sealing, it is urgent to establish a set of fully automatic dynamic sealing devices. The sealing material in the device uses liquid non-condensable solid materials, which can achieve fully automatic dynamic sealing, and has the characteristics of good stability, obvious sealing effect, low cost, and high degree of automation. Summary of the invention

[0004] The purpose of the present invention is to provide a fully automatic dynamic sealing system to solve the problems of cumbersome manual operation and poor sealing effect. It is particularly suitable for gas extraction and pressure measurement sealing. The device only needs to be connected manually and sent into the borehole to achieve fully automatic dynamic sealing. The main technical problem solved by the fully automatic dynamic sealing system is to achieve fully automatic dynamic real-time sealing.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] A fully automatic dynamic sealing system comprises a plurality of execution units and a control unit for controlling the execution units;

[0007] Each execution unit includes an automatic batching and grouting device and an adaptive dynamic hole sealer, and the control unit includes a central controller;

[0008] The automatic batching and slurry replenishing device includes a tank body, a stirring device and a pressure-boosting device arranged on the top of the tank body and extending into the tank body, a feeding device, a water-adding device and a slurry outlet arranged on the side wall of the tank body; a hydraulic sensor is installed at the bottom of the tank body, and pressure sensors are respectively installed at the upper part of the tank body, the bottom of the feeding device, the water-adding device and the slurry outlet, and electromagnetic valves are respectively installed on the feeding pipeline of the feeding device, the water inlet pipeline of the water-adding device and the slurry outlet; an electromagnetic flowmeter is installed on the pipeline of the water-adding device, a first electric control switch is arranged on the stirring device, and a second electric control switch is arranged on the pressure-boosting device;

[0009] The adaptive dynamic hole sealer comprises a front hole sealing device, a rear hole sealing device and an intermediate connecting section which are connected in sequence, and the slurry outlet is used to be connected with the front hole sealing device;

[0010] The central controller is used to receive pressure sensor signals inside the tank and from the stirring device, boosting device, feeding device and water adding device, and control the switches of the stirring device, boosting device, feeding device and water adding device, and control the opening and closing of the solenoid valve.

[0011] A further improvement of the present invention is that a gas pressure inlet is provided on the pressure boosting device, and a pressure of 1 to 5 MPa is provided to the tank body through the gas pressure inlet.

[0012] A further improvement of the present invention is that the stirrer of the stirring device extends into the tank body, and its rotation speed is controllable and has a viscosity measuring function.

[0013] A further improvement of the present invention is that the feeding device is a tank structure, in which raw materials are stored; the water adding pipeline of the water adding device is connected to the water pipeline of the mining party to provide water for the system.

[0014] A further improvement of the present invention is that an electromagnetic flow meter is also installed on the pipeline of the water adding device, and the electromagnetic flow meter is connected to the central controller for feeding back monitoring signals to the central controller.

[0015] A further improvement of the present invention is that the first electrically controlled switch of the stirring device, the second electrically controlled switch of the boosting device, the first solenoid valve of the feeding device, the second solenoid valve of the water adding device, and the third solenoid valve of the slurry outlet are all connected to the central controller, and the central controller outputs an open / close signal.

[0016] A further improvement of the present invention is that the front sealing device and the rear sealing device of the adaptive dynamic sealer expand as a plug after grouting, and the middle connecting section is grouting for the middle sealing section.

[0017] A further improvement of the present invention is that the pre-sealing device comprises a first extraction pipe, a first grouting pipe and a first expansion capsule pipe, the post-sealing device comprises a second extraction pipe, a second grouting pipe and a second expansion capsule pipe, and the middle connecting section comprises a third extraction pipe and a third grouting pipe;

[0018] The first grouting pipe, the second grouting pipe and the third grouting pipe are located inside the first extraction pipe, the second extraction pipe and the third extraction pipe, and a three-way pipe is arranged on the extraction pipe opening in the middle area of ​​the bag to extend out of the extraction pipe, wherein the front capsule grouting port and the rear capsule grouting port both extend into the capsule, using an open pipe, and the opening on the extraction pipe is sealed with the capsule opening to prevent air leakage and liquid leakage; a pressure valve is installed at the middle section grouting port, which is used to open the valve for grouting under the set pressure, so that the internal pressure of the capsule is always greater than the grouting pressure of the middle section.

[0019] A further improvement of the present invention is that a pressure flow acquisition module, an Ethernet communication module, a valve control module, a switch control module, a data display module and a data processing module are provided in the central controller. The pressure flow acquisition module collects pressure flow data through a pressure sensor and an electromagnetic flowmeter, performs data analysis through the data processing module, and feeds back the data to the control valve control module and the switch control module to control the first electric control switch, the second electric control switch, the first solenoid valve, the second solenoid valve and the third solenoid valve respectively, and feeds back the control result to the Ethernet communication module, and uploads the monitoring information and control information to the mine control station through the Ethernet communication module. The data display module is used to display the monitored pressure data and each switch status in real time.

[0020] The present invention has at least the following beneficial technical effects:

[0021] The present invention provides a fully automatic dynamic sealing system, which can automatically batch, grout and seal multiple times according to the on-site conditions, and has good sealing after sealing and grouting. The system can calculate and analyze the monitored signals, and provide real-time feedback on the various accessories of the automatic batching and grouting device. An intuitive and visual display of the observation results is achieved. The control unit adopts a modular design, has strong interactivity, and is easy to operate. Equipped with relevant control modules, the system's sealing operation can be automatically and controllably carried out, eliminating the inconvenience of manual operation of previous equipment. Equipped with a liquid sealing method, the adaptive sealer can be recycled and reused after pressure relief, greatly reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the connection of a fully automatic dynamic sealing system provided by an embodiment of the present invention;

[0023] Figure 2A schematic structural diagram of an automatic batching and slurry filling device provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of an adaptive dynamic hole sealer provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of a central controller provided by an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1: Automatic batching and grouting device 2: Adaptive dynamic sealer 3: Central controller

[0028] 10: Tank 11: Stirring device 12: Pressurizing device

[0029] 13: Feeding device 14: Water adding device 15: Slurry outlet

[0030] 20: Pre-sealing device 21: Post-sealing device 22: Intermediate connecting section

[0031] 10-1: First pressure sensor 10-2: Hydraulic pressure sensor 11-1: First electric control switch

[0032] 11-2: Agitator 12-1: Second electric switch 12-2: Air pressure inlet

[0033] 13-1: Second pressure sensor 13-2: First solenoid valve 14-1: Electromagnetic flow meter

[0034] 14-2: Second solenoid valve 14-3: Water supply pipeline 15-1: Third pressure sensor

[0035] 15-2: The third solenoid valve 20-1: The first extraction pipe 20-2: The first grouting pipe

[0036] 20-3: Pre-capsule grouting port 20-4: First expansion capsule tube 21-1: Second extraction tube

[0037] 21-2: Second grouting pipe 21-3: Post-capsule grouting port 21-4: Second expansion capsule pipe

[0038] 22-1: The third extraction pipe 22-2: The third grouting pipe 22-3: Pressure valve DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention is further described below in conjunction with the accompanying drawings.

[0041] like Figures 1 to 3 As shown, the present invention provides a fully automatic dynamic sealing system, including an automatic batching and slurry filling device 1, an adaptive dynamic sealer 2 and a central controller 3. The automatic batching and slurry filling device 1 includes a tank body 10, a stirring device 11, a booster device 12, a feeding device 13, a water adding device 14 and a slurry outlet 15, wherein the tank body 10 includes a first pressure sensor 10-1 and a hydraulic sensor 10-2, the stirring device 11 includes a first electric control switch 1-1 and a stirrer 11-2, the booster device 12 includes a first electric control switch 12-1 and an air pressure inlet 12-2; the feeding device 13 includes a second pressure sensor 13-1 and a first solenoid valve 13-2, the water adding device 14 includes an electromagnetic flowmeter 14-1, a second solenoid valve 14-2, a water adding pipeline 14-3, and the slurry outlet 15 includes a pressure sensor 10-1 and a hydraulic sensor 10-2; the stirring device 11 includes a first electric control switch 1-1 and a stirrer 11-2; the booster device 12 includes a first electric control switch 12-1 and an air pressure inlet 12-2; the feeding device 13 includes a second pressure sensor 13-1 and a first solenoid valve 13-2; the water adding device 14 includes an electromagnetic flowmeter 14-1 and a second solenoid valve 14-2; the water adding pipeline 14-3; the slurry outlet 15 includes a pressure sensor 10-1 and a pressure sensor 10-2; the stirring device 11 includes a first electric control switch 1-1 and a stirrer 11-2; the booster device 12 includes a first electric control switch 12-1 and an air pressure inlet 12-2; the feeding device 13 includes a second pressure sensor 13 The adaptive dynamic sealer 2 includes a front sealing device 20, a rear sealing device 21 and an intermediate connecting section 22, wherein the front sealing device 20 includes a first extraction tube 20-1, a first grouting tube 20-2, a front capsule grouting hole 20-3, and a first expansion capsule tube 20-4; the rear sealing device 21 includes a second extraction tube 21-1, a second grouting tube 21-2, a rear capsule grouting port 21-3, and a second expansion capsule tube 21-4; the intermediate connecting section 22 includes a third extraction tube 22-1, a third grouting tube 22-2, and a pressure valve 22-3.

[0042] The stirring device 11, the boosting device 12, the feeding device 13, the water adding device 14 and the slurry outlet 15 on the automatic batching and slurry filling device 1 are all fixed on the outside of the tank body 10, and holes are opened on the tank body 10 to extend the pipelines of each device into the interior of the tank body to achieve the functions of feeding, adding water, stirring, boosting and slurry discharge.

[0043] The first pressure sensor 10-1 can be responsible for detecting the gas pressure in the tank, and judging whether the pressure in the tank has reached the required pressure for grouting by the gas pressure. The hydraulic pressure sensor 10-2 detects the liquid pressure in the tank, and judges the slurry remaining in the tank by the hydraulic pressure, and whether to mix the materials. The third pressure sensor 15-1 monitors the pressure in the grouting pipeline, and is used to judge the sealing effect and status.

[0044] The central controller feeds back the pressure monitoring results and control conditions to the mine monitoring system through the Ethernet communication module, and manual intervention can be achieved through the monitoring system.

[0045] like Figure 1 As shown, the slurry outlet 15 of the automatic batching grouting device 1 is connected to the first grouting pipe 20-2 of the adaptive dynamic hole sealer 2, and the adaptive dynamic hole sealer 2 is placed inside the borehole. The water supply pipeline 14-3 is connected to the water supply pipeline on the mine, and the feeding device 13 has a cavity inside to store grouting materials.

[0046] like Figure 2 As shown, the stirring device 11, the pressurizing device 12, the feeding device 13, and the water adding device 14 in the automatic batching and slurry filling device 1 are all installed outside the tank body 10 and connected to the inside of the tank body through pipelines.

[0047] like Figure 3 As shown, the adaptive dynamic sealer 2 is composed of a front sealing device 20, a rear sealing device 21, and an intermediate connecting section 22. The extraction pipes of these three parts are connected by threaded connection, and the grouting pipe connection is connected by a quick connector.

[0048] like Figure 3 As shown, both the front capsule grouting port 20-3 and the rear capsule outlet 21-3 are open outlets, and the outlets are connected from the grouting pipe to the inside of the expansion capsule pipe, and a pressure valve 22-3 is installed at the grouting outlet of the middle connecting section 22 to form a slurry outlet pressure different from 20-3 and 21-3.

[0049] like Figure 4 As shown, the central processor 3 is provided with a pressure (flow) acquisition module, an Ethernet communication module, a valve control module, and a data display module. The pressure (flow) acquisition module collects pressure data through pressure sensors and electromagnetic flow meters, performs data analysis through processing software, and feeds back to the valve control module to control each valve and motor, and uploads the control result to the mining monitoring system through the Ethernet communication module. The mining monitoring system can also manually control the status of each motor and valve through the Ethernet communication module. The data display module is used to display the monitored pressure data and each switch status in real time.

[0050] like Figure 4 As shown, the first pressure sensor 10-1, the hydraulic sensor 10-2, the second pressure sensor 13-1, the electromagnetic flowmeter 14-1, and the third pressure sensor 15-1 are all connected to the central processor 3, and the first electrically controlled switch 11-1, the second electrically controlled switch 12-1, the first solenoid valve 13-2, the second solenoid valve 14-2, and the third solenoid valve 15-2 are also controlled by the central processor 3.

[0051] The automatic control system also includes an analysis and operation software, through which the system is regulated.

[0052] The working principle of the present invention is:

[0053] The pressure and flow sensor signals are used as the basis for judging the operation of each system. The third pressure sensor 15-1 can monitor the grouting pressure inside the borehole to determine whether it is necessary to continuously replenish the slurry. The first pressure sensor 10-1 can be used to determine whether the air pressure inside the tank meets the grouting pressure. The hydraulic sensor 10-2 can be used to determine whether the slurry in the tank 10 is sufficient. The bed dryer 13-1 can be used to determine how much grouting raw material needs to be injected. The sensor 14-1 can be used to determine the amount of water to be added. All of the above sensors are used together to control each valve and switch to achieve a fully automatic dynamic sealing effect.

[0054] Embodiment 1:

[0055] The specific workflow in this implementation is as follows:

[0056] Connect the adaptive dynamic sealer 2 and send it into the borehole, connect the slurry outlet 15 of the automatic batching and grouting device 1 to the first grouting pipe 20-1, connect the water supply pipeline 14-3 to the water supply pipeline of the mine, and power on the system.

[0057] When grouting starts, the third pressure sensor 15-1 detects that there is no pressure in the adaptive dynamic sealer in the borehole, and grouting operation is required. The hydraulic sensor 10-2 detects that there is not enough slurry in the tank, and grouting is required. Therefore, the first solenoid valve 13-2 and the second solenoid valve 14-2 are opened to perform material and water replenishment operations, and the second pressure sensor 13-1 and the electromagnetic flowmeter 14-1 are used to determine the amount of raw materials and water added. After enough material is added, the first electric control switch 1-1 is turned on to stir the material in the tank body 10. After stirring for a period of time, the agitator 11-2 will automatically determine the viscosity of the slurry. If the viscosity is appropriate, the next step is performed. If the viscosity is not appropriate, material or water is added. When there is sufficient slurry in the tank, the central controller 3 makes a judgment, turns off the first electric control switch 1-1 of the agitator 11, opens the third solenoid valve 15-2 and turns on the second electric control switch 12-1 to perform grouting operations. Under normal grouting conditions, the second electric control switch 12-1 is in a normally open state to ensure that there is sufficient pressure in the tank body 10 for grouting.

[0058] After the grouting is completed, the pressure device 12 and the third electromagnetic valve 15-2 are both in a normally open state. Due to the development of cracks or the occurrence of drilling holes, continuous grouting can be carried out.

[0059] If there is insufficient slurry inside the tank body 10 during the subsequent slurry filling process, secondary batching is performed. Before batching, the third solenoid valve 15-2 and the second electric control switch 12-1 of the pressurizing device 12 are closed, and the batching and stirring are performed in the same judgment and operation sequence as the above operation. After completion, the slurry filling operation is repeated.

Claims

1. A fully automatic dynamic sealing system, characterized in that: It includes a plurality of execution units and a control unit for controlling the execution units; Each execution unit includes an automatic batching and grouting device (1) and an adaptive dynamic hole sealer (2), and the control unit includes a central controller (3); The automatic batching and slurry replenishing device (1) comprises a tank body (10), a stirring device (11) and a pressure increasing device (12) arranged on the top of the tank body (10) and extending into the tank body (10), and a feeding device (13), a water adding device (14) and a slurry outlet (15) arranged on the side wall of the tank body (10); a hydraulic sensor (10-2) is installed at the bottom of the tank body (10); pressure sensors are installed at the top of the tank body (10), the bottom of the feeding device (13), the water adding device (14) and the slurry outlet (15); and pressure sensors are installed on the feeding pipeline of the feeding device (13), the water inlet pipeline of the water adding device (14) and the slurry outlet (15). Solenoid valve; the water adding device (14) is provided with an electromagnetic flowmeter (14-1) on the pipeline; the stirring device (11) is provided with a first electrically controlled switch (11-1); the boosting device (12) is provided with a second electrically controlled switch (12-1); the slurry outlet (15) comprises a third pressure sensor (15-1) and a third solenoid valve (15-2); when grouting starts, the third pressure sensor (15-1) detects that the adaptive dynamic hole sealer in the borehole has no pressure and grouting needs to be performed; after grouting is completed, the boosting device (12) and the third solenoid valve (15-2) are both in a normally open state; and continuous grouting can be performed due to the development of cracks or the occurrence of borehole breaches; The adaptive dynamic hole sealer (2) comprises a front hole sealing device (20), a rear hole sealing device (21) and an intermediate connecting section (22) which are connected in sequence, and the slurry outlet (15) is used to communicate with the front hole sealing device (20); The central controller (3) is used to receive pressure sensor signals in the tank (10) and the stirring device (11), the pressurizing device (12), the feeding device (13) and the water adding device (14), and to control the switching of the stirring device (11), the pressurizing device (12), the feeding device (13) and the water adding device (14), and to control the opening and closing of the solenoid valve.

2. A fully automatic dynamic sealing system according to claim 1, characterized in that: The boosting device (12) is provided with an air pressure inlet (12-2), and a pressure of 1 to 5 MPa is provided to the tank body (10) through the air pressure inlet (12-2).

3. The fully automatic dynamic sealing system according to claim 1, characterized in that: The stirrer (11-2) of the stirring device (11) extends into the tank body (10), and its rotation speed is controllable and has a viscosity measurement function.

4. The fully automatic dynamic sealing system according to claim 1, characterized in that: The feeding device (13) is a tank structure, in which raw materials are stored; the water adding pipeline (14-3) of the water adding device (14) is connected to the water pipeline of the mining party to provide water for the system.

5. The fully automatic dynamic sealing system according to claim 1, characterized in that: The electromagnetic flowmeter (14-1) is connected to the central controller (3) and is used to feed back monitoring signals to the central controller.

6. The fully automatic dynamic sealing system according to claim 1, characterized in that: The first electrically controlled switch (11-1) of the stirring device (11), the second electrically controlled switch (12-1) of the boosting device (12), the first solenoid valve (13-2) of the feeding device (13), the second solenoid valve (14-2) of the water adding device (14), and the third solenoid valve (15-2) of the pulp outlet (15) are all connected to the central controller (3), and the central controller outputs an on / off signal.

7. The fully automatic dynamic sealing system according to claim 1, characterized in that: The front hole sealing device (20) and the rear hole sealing device (21) of the adaptive dynamic hole sealer (2) expand after grouting to serve as a plug, and the middle connecting section (22) is grouting for the middle hole sealing section.

8. The fully automatic dynamic sealing system according to claim 7, characterized in that: The front sealing device (20) comprises a first extraction tube (20-1), a first grouting tube (20-2) and a first expansion capsule tube (20-4); the rear sealing device (21) comprises a second extraction tube (21-1), a second grouting tube (21-2) and a second expansion capsule tube (21-4); and the middle connecting section (22) comprises a third extraction tube (22-1) and a third grouting tube (22-2); The first grouting pipe (20-2), the second grouting pipe (21-2), and the third grouting pipe (22-2) are located inside the first extraction pipe (20-1), the second extraction pipe (21-1), and the third extraction pipe (22-1), and a three-way pipe is provided at the opening of the extraction pipe in the middle area of ​​the bag to extend out of the extraction pipe, wherein the front capsule grouting port (20-3) and the rear capsule grouting port (21-3) both extend into the capsule, using an open pipe, and the opening on the extraction pipe and the capsule opening are sealed to prevent air and liquid leakage; a pressure valve (22-3) is installed at the middle section grouting port for opening the valve at a set pressure for grouting, so that the internal pressure of the capsule is always greater than the grouting pressure of the middle section.

9. The fully automatic dynamic sealing system according to claim 1, characterized in that: The central controller (3) is provided with a pressure flow acquisition module, an Ethernet communication module, a valve control module, a switch control module, a data display module and a data processing module. The pressure flow acquisition module acquires pressure flow data through a pressure sensor and an electromagnetic flow meter, performs data analysis through the data processing module, and feeds back the data to the valve control module and the switch control module so as to control the first electric control switch (11-1), the second electric control switch (12-1), the first electromagnetic valve (13-2), the second electromagnetic valve (14-2) and the third electromagnetic valve (15-2) respectively, and feeds back the control result to the Ethernet communication module, and uploads the monitoring information and the control information to the mine control center through the Ethernet communication module. The data display module is used to display the monitored pressure data and the status of each switch in real time.

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