阅读说明：本技术 一种煤矿井下火区进回风巷自动启闭风门 (Automatic opening and closing air door for air inlet and return roadway of underground fire zone of coal mine ) 是由 翟小伟 潘文俊 宋波波 王凯 贺龙 尚博 成倬 杨冲 胡冕 于 2019-11-12 设计创作，主要内容包括：本发明提供了一种煤矿井下火区进回风巷自动启闭风门,包括砌筑墙体、气体检测组件和移动窗门,移动窗门外周有防火膨胀密封条,在移动窗门的砌筑墙体一侧有安装空腔,安装空腔内有制动装置,制动装置包括电磁阀、油泵、交流接触器、传感器数据监测反馈控制器、油管、液压顶杆、固定支架和电源,液压顶杆活塞端连接移动窗门,液压顶杆通过固定支架固定连接在砌筑墙体上,传感器数据监测反馈控制器的输入端通过采集电缆与气体检测组件连接。本发明能实时监测巷道内气体含量,在灾害发生时控制移动窗门自行完成巷道密闭任务,实现煤矿井下灾害救援密闭墙快速建立,对灾害治理有着重大的意义,提高工作人员的健康安全指数和减小灾害经济损失。(The invention provides an automatic opening and closing air door of an air inlet and return roadway of an underground fire zone of a coal mine, which comprises a masonry wall body, a gas detection assembly and a movable window door, wherein the periphery of the movable window door is provided with a fireproof expansion sealing strip, one side of the masonry wall body of the movable window door is provided with an installation cavity, a brake device is arranged in the installation cavity, the brake device comprises an electromagnetic valve, an oil pump, an alternating current contactor, a sensor data monitoring feedback controller, an oil pipe, a hydraulic ejector rod, a fixed support and a power supply, the piston end of the hydraulic ejector rod is connected with the movable window door, the hydraulic ejector rod is fixedly connected to the masonry wall body through the fixed support, and the input end of the sensor data monitoring. The system can monitor the gas content in the roadway in real time, control the movable window door to automatically complete the roadway sealing task when a disaster occurs, realize the rapid establishment of the disaster rescue sealing wall under the coal mine, has great significance for disaster management, improves the health safety index of workers and reduces the economic loss of the disaster.)

1. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine is characterized by comprising a masonry wall body (1), a gas detection assembly (4) embedded in the inner side of the masonry wall body (1) and two movable window doors (13) which are slidably mounted on the outer wall of the masonry wall body (1) and are arranged in a bilateral symmetry mode, fireproof expansion sealing strips are arranged on the peripheries of the movable window doors (13), an installation cavity (3) is formed in the masonry wall body (1), a braking device for controlling the sliding of the movable window doors (13) is mounted in the installation cavity (3), and the braking device comprises an electromagnetic valve (11), an oil pump (16), an alternating current contactor (17), a sensor data monitoring feedback controller (18), an oil pipe (19), a hydraulic ejector rod (8), a fixed support (7) and a power supply (12); the piston end of the hydraulic ejector rod (8) is connected with the movable window door (13), and the hydraulic ejector rod (8) is fixedly connected to the masonry wall (1) through the fixing support (7); the output end of the power supply (12) is respectively connected with the sensor data monitoring feedback controller (18) and the alternating current contactor (17), the input end of the sensor data monitoring feedback controller (18) is connected with the gas detection component (4) through a collection cable (5), the output end of the sensor data monitoring feedback controller (18) is respectively connected with the alternating current contactor (17) and the electromagnetic valve (11), the input end of the oil pump (16) is connected with the alternating current contactor (17), the output end of the oil pump (16) is connected with the electromagnetic valve (11), one output end of the electromagnetic valve (11) is connected with the oil inlet (9) of the hydraulic ejector rod (8) oil cylinder through an oil inlet pipe (19), the other output end of the electromagnetic valve (11) is connected with an oil outlet (10) of the hydraulic ejector rod (8) oil cylinder through an oil outlet pipe (2).

2. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine according to claim 1, wherein the two movable window doors (13) are respectively in sliding fit with an upper frame sliding groove (6) and a lower frame sliding groove (15) which are embedded in the masonry wall body (1).

3. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine according to claim 2, wherein a limit switch (14) is arranged in the middle of the upper frame sliding groove (6).

4. The automatic opening and closing air door for the coal mine underground fire zone air inlet and return roadway according to claim 1, wherein the gas detection assembly (4) consists of a carbon monoxide sensor, a gas sensor, a hydrogen sulfide sensor, a nitrogen oxide sensor, a smoke sensor and a dust sensor.

5. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine according to claim 1, wherein the inner wall of the movable window door (13) is a high-strength light alloy layer, the middle layer is a wood board layer, and the outer wall is a flexible waterproof coating layer.

6. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine according to claim 5, wherein the flexible waterproof coating layer is prepared from the following raw materials in parts by weight: 1-2 parts of high-molecular emulsion and 1 part of inorganic powder; the polymer emulsion is more than one of acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, neoprene latex and styrene-acrylic emulsion; the inorganic powder is a mixture of cement and an auxiliary agent, the cement is more than one of Portland cement and aluminum sulfate cement, and the auxiliary agent is more than one of silica powder, slag powder, polymer fiber and quartz powder.

7. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine according to claim 1, wherein the thickness of the masonry wall (1) is 800 mm.

8. The automatic opening and closing air door for the air inlet and return roadway of the underground fire zone of the coal mine as claimed in claim 1, wherein the hydraulic ejector rod (8) is a GYCD-130-750 hydraulic support rod, the oil pipe (19) is a 60213-2-70MPa hydraulic oil pipe, the model of the electromagnetic valve (11) is DBQ1.5L-70MPa, the model of the oil pump (16) is ZHH-700, and the model of the alternating current contactor (17) is CJX 2-1210.

Technical Field

The invention belongs to the technical field of coal mine underground disaster prevention and disaster emergency rescue, and particularly relates to an automatic opening and closing air door for an air inlet and return roadway of a coal mine underground fire zone.

Background

Coal mine fire is one of important disasters affecting coal mine safety production, and once a fire disaster occurs under a coal mine, a fire area needs to be sealed when the fire disaster cannot be extinguished by a direct fire extinguishing method. At present, the most widely applied method for sealing the fire area is to construct a sealing wall on the air inlet and return side roadway of the fire area, reserve a ventilation opening respectively, and then seal the ventilation opening simultaneously. The method mainly comprises the steps that the vent holes are sealed by workers, two vent holes cannot be sealed simultaneously, the workers can be subjected to life risks when sealing the vent holes, and a large amount of manpower, material resources and financial resources can be wasted.

Disclosure of Invention

The invention aims to solve the technical problem that the prior art is not enough, and provides an automatic opening and closing air door for an air inlet and return roadway of a fire area under a coal mine, a gas detection assembly of the automatic opening and closing air door detects the content of toxic and harmful gas, the detected content information is transmitted to a sensor data monitoring feedback controller, when the difference between any detected content information and a set value in the sensor data monitoring feedback controller exceeds a threshold value, the sensor data monitoring feedback controller simultaneously sends an instruction to an electromagnetic valve and an alternating current contactor, the sensor data monitoring feedback controller indicates the alternating current contactor to be closed, the alternating current contactor indicates an oil pump to start working and start oil supply, the sensor data monitoring feedback controller simultaneously indicates the electromagnetic valve to open an oil inlet of a hydraulic ejector rod, crude oil in the oil pump enters an oil inlet pipe through the electromagnetic valve and supplies oil to the oil cylinder of the hydraulic ejector, the hydraulic push rod extends a piston of the hydraulic push rod, the hydraulic push rod pushes the movable window door to move to a position contacting with the limit switch, the task of sealing a roadway is finished, when an air door is opened, crude oil in an oil cylinder of the hydraulic push rod flows out from an oil outlet and flows back to the oil pump through the oil outlet pipe and the electromagnetic valve in sequence, and the movable window door can be opened and closed manually.

In order to solve the technical problems, the invention adopts the technical scheme that: an automatic opening and closing air door of an air inlet and return roadway of a coal mine underground fire zone comprises a masonry wall body, a gas detection assembly embedded in the inner side of the masonry wall body and two movable window doors which are slidably mounted on the outer wall of the masonry wall body and are arranged in a bilateral symmetry mode, fireproof expansion sealing strips are arranged on the peripheries of the movable window doors, an installation cavity is formed in the masonry wall body, a braking device for controlling the movable window doors to slide is mounted in the installation cavity, and the braking device comprises an electromagnetic valve, an oil pump, an alternating current contactor, a sensor data monitoring feedback controller, an oil pipe, a hydraulic ejector rod, a fixed support and a power supply; the piston end of the hydraulic ejector rod is connected with the movable window and door, and the hydraulic ejector rod is fixedly connected to the masonry wall through the fixed support; the output of power respectively with sensor data monitoring feedback controller with ac contactor links to each other, sensor data monitoring feedback controller's input through gather the cable with gaseous detection subassembly is connected, sensor data monitoring feedback controller's output links to each other with ac contactor and solenoid valve respectively, the input of oil pump with ac contactor links to each other, the output of oil pump with the solenoid valve links to each other, an output of solenoid valve is through advancing oil pipe connection the oil inlet of hydraulic ram hydro-cylinder, another output of solenoid valve is through going out oil pipe connection the oil-out of hydraulic ram hydro-cylinder.

Preferably, the two movable windows and doors are respectively matched with an upper frame sliding groove and a lower frame sliding groove which are embedded in the masonry wall body in a sliding mode.

Preferably, the middle part of the upper frame sliding groove is provided with a limit switch.

Preferably, the gas detection assembly is composed of a carbon monoxide sensor, a gas sensor, a hydrogen sulfide sensor, a nitrogen oxide sensor, a smoke sensor and a dust sensor.

Preferably, the inner wall of the movable window door is a high-strength light alloy layer, the middle layer is a wood board layer, and the outer wall is a flexible waterproof coating layer.

Preferably, the flexible waterproof coating layer is prepared from the following raw materials in parts by weight: 1-2 parts of high-molecular emulsion and 1 part of inorganic powder; the polymer emulsion is more than one of acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, neoprene latex and styrene-acrylic emulsion; the inorganic powder is a mixture of cement and an auxiliary agent, the cement is more than one of Portland cement and aluminum sulfate cement, and the auxiliary agent is more than one of silica powder, slag powder, polymer fiber and quartz powder.

Preferably, the thickness of the masonry wall is 800 mm.

Preferably, the hydraulic ejector rod is a GYCD-130-750 hydraulic support rod, the oil pipe is a 60213-2-70MPa hydraulic oil pipe, the model of the electromagnetic valve is DBQ1.5L-70MPa, the model of the oil pump is ZHH-700, and the model of the alternating current contactor is CJX 2-1210.

Compared with the prior art, the invention has the following advantages:

the gas detection component of the invention detects the content of poisonous and harmful gas, transmits the detected content information to the sensor data monitoring feedback controller, when the difference between any detected content information and the set value in the sensor data monitoring feedback controller exceeds the threshold value, the sensor data monitoring feedback controller simultaneously sends an instruction to the electromagnetic valve and the alternating current contactor, the sensor data monitoring feedback controller indicates the alternating current contactor to be closed, the alternating current contactor indicates the oil pump to start working and start oil supply, the sensor data monitoring feedback controller simultaneously indicates the electromagnetic valve to open the oil inlet of the hydraulic ejector rod, crude oil in the oil pump enters the oil inlet pipe through the electromagnetic valve to supply oil to the oil cylinder of the hydraulic ejector rod, so that the piston of the hydraulic ejector rod extends, the hydraulic ejector rod pushes the movable window door to move to contact with the limit switch to finish the task of sealing the roadway, when the air door is opened, crude oil in the hydraulic ejector rod oil cylinder flows out from the oil outlet and sequentially flows back into the oil pump through the oil outlet pipe and the electromagnetic valve, the movable window door can be opened and closed manually, when the movable window door is closed, the fireproof expansion sealing strips on the periphery of the movable window door can seal gaps between the two movable window doors and between the movable window door and a masonry wall body, and a roadway sealing task and a coal mine underground disaster rescue sealing wall are established quickly. The system can monitor the gas content in the roadway in real time, controls the movable window door to automatically complete the roadway sealing task when a disaster occurs, realizes the rapid establishment of the disaster rescue sealing wall under the coal mine, has great significance for disaster management, plays a key role in improving the health safety index of workers and reducing the disaster economic loss, is simple, practical, efficient and economical, and can be widely popularized and used.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a partial enlarged view of the interior of the mounting cavity of the present invention.

Description of reference numerals:

1, building a wall body; 2, an oil outlet pipe; 3, installing a cavity;

4-a gas monitoring assembly; 5-data acquisition cable; 6, sliding grooves of the upper frame;

7, fixing a bracket; 8, hydraulic ejector rods; 9-an oil inlet;

10-oil outlet; 11-a solenoid valve; 12-a power supply;

13-sliding window and door; 14-limit switch; 15-lower frame sliding groove;

16-an oil pump; 17-an ac contactor; 18-sensor data monitoring feedback controller; 19-oil inlet pipe.

Detailed Description

As shown in fig. 1-2, the invention comprises a masonry wall 1, a gas detection assembly 4 embedded in the masonry wall 1, and two movable windows 13 which are arranged on the outer wall of the masonry wall 1 in a bilateral symmetry manner, wherein the peripheries of the movable windows 13 are all provided with fireproof expansion sealing strips, when the movable windows 13 are closed, the fireproof expansion sealing strips are used for sealing gaps between the two movable windows 13 and between the movable windows 13 and the masonry wall 1, an installation cavity 3 is formed in the masonry wall 1, a braking device for controlling the sliding of the movable windows 13 is installed in the installation cavity 3, and the braking device comprises an electromagnetic valve 11, an oil pump 16, an alternating current contactor 17, a sensor data monitoring feedback controller 18, an oil pipe 19, a hydraulic ejector rod 8, a fixed support 7 and a power supply 12; the piston end of the hydraulic ejector rod 8 is connected with the movable window door 13, and the hydraulic ejector rod 8 is fixedly connected to the masonry wall 1 through the fixed support 7; the output end of the power supply 12 is respectively connected with the sensor data monitoring feedback controller 18 and the alternating current contactor 17, the input end of the sensor data monitoring feedback controller 18 is connected with the gas detection assembly 4 through an acquisition cable 5, the output end of the sensor data monitoring feedback controller 18 is respectively connected with the alternating current contactor 17 and the electromagnetic valve 11, the input end of the oil pump 16 is connected with the alternating current contactor 17, the output end of the oil pump 16 is connected with the electromagnetic valve 11, one output end of the electromagnetic valve 11 is connected with the oil inlet 9 of the hydraulic ejector 8 oil cylinder through an oil inlet pipe 19, and the other output end of the electromagnetic valve 11 is connected with the oil outlet 10 of the hydraulic ejector 8 oil cylinder through an oil outlet pipe 2; in the process of mining a mine, disaster prevention construction operation is carried out on a design place in a roadway, the masonry wall body 1 can enable the movable window and door 13 to be installed in a regular geometric space by considering the irregularity of the roadway, the movable window and door 13 is overlapped with the outer wall of the masonry wall body 1 when being in an open state, and the movable window and door 13 is integrated with the masonry wall body 1 when being in a closed state to form a closed space.

In the invention, the two movable windows and doors 13 are respectively matched with the upper frame sliding groove 6 and the lower frame sliding groove 15 which are embedded in the masonry wall 1 in a sliding manner to open and close the air door.

In the invention, the middle part of the upper frame sliding groove 6 is provided with a limit switch 14.

According to the invention, the gas detection assembly 4 consists of a carbon monoxide sensor, a gas sensor, a hydrogen sulfide sensor, a nitrogen oxide sensor, a smoke sensor and a dust sensor, the installation position of the gas detection assembly 4 is located at the inner side of the automatic opening and closing air door, and the content information of carbon monoxide, gas, hydrogen sulfide, nitrogen oxide, smoke and dust in the air inlet and return roadway of the underground fire zone of the coal mine is monitored in real time.

In the invention, the inner wall of the movable window door 13 is a high-strength light alloy layer, the middle layer is a wood board layer, and the outer wall is a flexible waterproof coating layer; the high-strength light alloy layer can be made of Al-Si alloy heat-resistant aluminum alloy; the high-strength light alloy layer of the movable window door 13 is close to one side in the roadway, so that when a fire disaster happens, the movable window door 13 can be prevented from being burnt by the fire; the protective effect of the flexible waterproof coating layer can ensure that the wood board layer of the movable window door 13 is not easy to corrode in a wet roadway, and the requirement of long service life is met.

In the invention, the flexible waterproof coating layer is prepared from the following raw materials in parts by weight: 1-2 parts of high-molecular emulsion and 1 part of inorganic powder; the polymer emulsion is more than one of acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, neoprene latex and styrene-acrylic emulsion; the inorganic powder is a mixture of cement and an auxiliary agent, the cement is more than one of Portland cement and aluminum sulfate cement, and the auxiliary agent is more than one of silica powder, slag powder, polymer fiber and quartz powder.

In the invention, the thickness of the masonry wall 1 is 800 mm.

In the invention, the hydraulic ejector rod 8 is a GYCD-130-750 hydraulic support rod, the oil pipe 19 is a 60213-2-70MPa hydraulic oil pipe, the electromagnetic valve 11 is DBQ1.5L-70MPa, the oil pump 16 is ZHH-700, and the alternating current contactor 17 is CJX 2-1210.

The working principle of the invention is as follows:

the gas detection component 4 detects the content of poisonous and harmful gas, the detected content information is transmitted to the sensor data monitoring feedback controller 18, when the difference between any detected content information and a set value in the sensor data monitoring feedback controller 18 exceeds a threshold value, the sensor data monitoring feedback controller 18 simultaneously sends an instruction to the electromagnetic valve 11 and the alternating current contactor 17, the sensor data monitoring feedback controller 18 indicates that the alternating current contactor 17 is closed, the alternating current contactor 17 indicates that the oil pump 16 starts to work and starts to supply oil, the sensor data monitoring feedback controller 18 simultaneously indicates that the electromagnetic valve 11 opens the oil inlet 9 of the hydraulic ejector rod 8, crude oil in the oil pump 16 enters the oil inlet pipe 19 through the electromagnetic valve 11 to supply oil to the oil cylinder of the hydraulic ejector rod 8, so that the piston of the hydraulic ejector rod 8 extends, and the hydraulic ejector rod 8 pushes the movable window door 13 to move to contact with the limit switch 14 to stop the task of roadway sealing, when the air door is opened, crude oil in the oil cylinder in the hydraulic ejector rod 8 flows out from the oil outlet 10 and sequentially flows back to the oil pump 16 through the oil outlet pipe 2 and the electromagnetic valve 11, and the movable window door 13 can also be opened and closed manually. When the movable window door 13 is closed, the fireproof expansion sealing strips on the periphery of the movable window door 13 can seal gaps between the two movable window doors 13 and between the movable window door 13 and the masonry wall 1, so that a roadway sealing task and a coal mine underground disaster rescue sealing wall can be quickly established.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.