阅读说明：本技术 井下无线充电安全屋的充氮正压防爆系统及其工作方法 (Nitrogen-filled positive pressure explosion-proof system of underground wireless charging safety house and working method thereof ) 是由 朱和平 潘克修 于 2021-09-14 设计创作，主要内容包括：本发明属于煤矿井下巡检机器人应用技术领域,具体公开了井下无线充电安全屋的充氮正压防爆系统,包括氮气罐、氮气导管、主氮气导管、抽气泵、分氮气导管、第一氮气输气管和第二氮气输气管等,其中,第一氮气输气管与井下无线充电安全屋的控制舱外壁连接,第二氮气输气管与井下无线充电安全屋的充电舱外壁连接。本发明的有益效果在于：巡检机器人在井下无线充电安全屋内充电时,井下无线充电安全屋内无易燃、易爆气体进入,给巡检机器人提供一个安全可靠、快速高效地自动无线充电环境,杜绝充电装置可能发生高温爆燃的隐患；实现充氮正压防爆智能控制,无需人工干预,省力且可靠性、安全性有效提升,确保巡检机器人自动充电过程及设备符合GB3836.1-5要求。(The invention belongs to the technical field of application of underground coal mine inspection robots, and particularly discloses a nitrogen-filled positive pressure explosion-proof system of an underground wireless charging safety room. The invention has the beneficial effects that: when the inspection robot is charged in the underground wireless charging safety room, no inflammable and explosive gas enters the underground wireless charging safety room, a safe, reliable, rapid and efficient automatic wireless charging environment is provided for the inspection robot, and the potential danger that a charging device possibly generates high-temperature deflagration is avoided; the nitrogen-filled positive-pressure explosion-proof intelligent control is realized, manual intervention is not needed, labor is saved, reliability and safety are effectively improved, and the automatic charging process and equipment of the inspection robot are ensured to meet the requirements of GB 3836.1-5.)

1. The explosion-proof system of nitrogen positive pressure that fills in wireless safe room that charges in pit, its characterized in that: including nitrogen gas jar (1), and nitrogen gas pipe (2) of being connected with nitrogen gas jar (1), and main nitrogen gas pipe (3) of being connected with nitrogen gas pipe (2), and branch nitrogen gas pipe (6) of being connected with main nitrogen gas pipe (3), and with branch nitrogen gas pipe (6) two-way joint (5) that cooperate and use, aspiration pump (4), and branch nitrogen gas pipe (7) of being connected with two-way joint (5), and first nitrogen gas-supply pipe (8) of being connected with branch nitrogen gas pipe (7) respectively, second nitrogen gas-supply pipe (9), wherein, first nitrogen gas-supply pipe (8) are connected with the control outer wall of wireless charging safety cabin in the pit, second nitrogen gas-supply pipe (9) are connected with the cabin outer wall that charges of wireless charging safety cabin in the pit.

2. The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house according to claim 1, characterized in that: the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house further comprises a first pressure sensor (13) and a second pressure sensor (14) which are arranged on the main nitrogen guide pipe (3) and the branch nitrogen guide pipe (7), a control cabin pressure sensor (15) which is arranged on the outer wall of the control cabin of the underground wireless charging safety house, and a charging cabin pressure sensor (16) which is arranged on the outer wall of the charging cabin of the underground wireless charging safety house.

3. The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house according to claim 2, characterized in that: the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house further comprises a first electromagnetic valve (10) and a second electromagnetic valve (11) which are arranged on the first nitrogen gas conveying pipe (8) and the second nitrogen gas conveying pipe (9).

4. The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house according to claim 3, characterized in that: the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house further comprises a standby nitrogen guide pipe (18) connected with the main nitrogen guide pipe (3), a standby nitrogen tank (17) connected with the standby nitrogen guide pipe (18), and a third electromagnetic valve (19) which is arranged on the main nitrogen guide pipe (3) and located between the standby nitrogen guide pipe (18) and the nitrogen guide pipe (2).

5. The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house according to claim 4, characterized in that: the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house further comprises a pressurizing air guide pipe (21) connected with the nitrogen-dividing guide pipe (7), a fourth electromagnetic valve (22) arranged on the pressurizing air guide pipe (21), a pressurizing fan (20) connected with the pressurizing air guide pipe (21), a fifth electromagnetic valve (23) arranged on the nitrogen-dividing guide pipe (7) and located on one side of the two-way connector (5), and a far-end intelligent controller matched with the nitrogen-filled positive pressure explosion-proof system for use.

6. The working method of the underground wireless charging safety house nitrogen-charging positive pressure explosion-proof system according to claim 5, characterized by comprising the following steps:

step 1, after a far-end intelligent controller receives a nitrogen filling control signal of a safety house, starting an air pump (4) to pump out nitrogen in a nitrogen tank (1) through a two-way connector (5), a branch nitrogen guide pipe (6), a nitrogen guide pipe (2), a main nitrogen guide pipe (3), a branch nitrogen guide pipe (7), a first nitrogen gas transmission pipe (8) and a second nitrogen gas transmission pipe (9) and fill a control cabin of the underground wireless charging safety house and a charging cabin of the underground wireless charging safety house, wherein a fifth electromagnetic valve (23), a first electromagnetic valve (10) and a second electromagnetic valve (11) are all in an open state in the nitrogen filling process;

step 2, the far-end intelligent controller monitors the pipeline pressure states of the main nitrogen guide pipe (3) and the nitrogen distribution guide pipe (7) through feedback signals of a first pressure sensor (13) and a second pressure sensor (14), monitors the pressure states in the control cabin and the charging cabin through a control cabin pressure sensor (15) and a charging cabin pressure sensor (16), and repeats the action of the step 1 when the pressure states in the control cabin and the charging cabin are lower than preset values;

and 3, when the pressure in the control cabin and the charging cabin is lower than a preset value, and the pressure in the control cabin and the charging cabin is still lower than the preset value after the action of the step 1 is repeated, at the moment, the far-end intelligent controller controls to start the booster fan (20) and open the fourth electromagnetic valve (22) to synchronously boost the pressure in the control cabin and the charging cabin through the booster air duct (21) and the air suction pump (4).

7. The working method of the underground wireless charging safety room nitrogen-charging positive-pressure explosion-proof system according to claim 6, characterized in that: in another working mode of the step 3, when the pressure in the control cabin and the charging cabin is lower than a preset value, the far-end intelligent controller controls the air pump (4) to be closed and the fifth electromagnetic valve (23) to be closed, and simultaneously the far-end intelligent controller controls the booster fan (20) to be started and the fourth electromagnetic valve (22) to be opened to boost the pressure in the control cabin and the charging cabin through the booster air duct (21).

8. The working method of the underground wireless charging safety room nitrogen-charging positive-pressure explosion-proof system according to claim 6, characterized in that: when the nitrogen in the nitrogen tank (1) is insufficient, the remote intelligent controller opens the third electromagnetic valve (19), and the step 1 is repeated to pump out the nitrogen in the standby nitrogen tank (17) and fill the control cabin of the underground wireless charging safety room and the charging cabin of the underground wireless charging safety room.

Technical Field

The invention belongs to the technical field of application of a wireless charging safety house in a coal mine, and particularly relates to a nitrogen-charging positive pressure explosion-proof system of the wireless charging safety house in the coal mine and a working method thereof.

Background

The underground coal mine guide rail type inspection robot is charged by a storage battery, and can be used after the inspection frequency is high or low and the battery power is used quickly (before the power is exhausted) in time.

Because there is the environmental factor that probably explodes in the pit in the colliery, according to the safety standard requirement of colliery borehole operation, can not charge for patrolling and examining robot directly under naked environment. At present, the charging mode of the inspection robot is that the battery of the inspection robot is separated from the underground environment for manual operation and then is charged, the battery is charged after the charging is completed, the battery is returned to the underground coal mine for installation and use, the charging mode is adopted, the inspection work of the robot needs to be stopped, the work complexity of corresponding operators is increased, the labor and the time are wasted, and a plurality of uncertain safety risk factors are increased.

When the underground charging safety room (the application number of the technical scheme applied by the applicant is '2021110043018') is adopted for charging (wireless charging) operation, because the external pressure in the underground coal mine is large, namely, the pressure difference exists between the underground charging safety room and the outside, the external inflammable and explosive gas can enter the underground charging safety room under the action of the pressure, and unsafe factors exist; in the charging process, the charging device may have potential safety hazards of high-temperature detonation.

Therefore, based on the above problems, the present invention provides a nitrogen-filled positive pressure explosion-proof system for an underground wireless charging safety house and a working method thereof.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a nitrogen-charging positive-pressure explosion-proof system of an underground wireless charging safety house and a working method thereof, which solve the potential safety hazard of the underground charging safety house due to pressure difference and the problem that a charging device possibly has high-temperature detonation in the charging process, ensure that an inspection robot carries out safe charging in the charging safety house, avoid the potential high-temperature detonation hazard of the charging device, simultaneously realize intelligent control of nitrogen-charging positive-pressure explosion-proof, do not need manual intervention, save labor and improve reliability, effectively improve safety and meet the requirement of underground coal mine safety production.

The technical scheme is as follows: the invention provides a nitrogen-filled positive pressure explosion-proof system of an underground wireless charging safety house, which comprises a nitrogen tank, a nitrogen guide pipe connected with the nitrogen tank, a main nitrogen guide pipe connected with the nitrogen guide pipe, a branch nitrogen guide pipe connected with the main nitrogen guide pipe, a two-way joint, an air pump, a branch nitrogen guide pipe connected with the two-way joint, and a first nitrogen gas pipe and a second nitrogen gas pipe which are respectively connected with the branch nitrogen guide pipe, wherein the first nitrogen gas pipe is connected with the outer wall of a control cabin of the underground wireless charging safety house, and the second nitrogen gas pipe is connected with the outer wall of a charging cabin of the underground wireless charging safety house.

This technical scheme the safe room of charging of wireless in pit fill nitrogen malleation explosion-proof system, still including setting up first pressure sensor, the second pressure sensor on main nitrogen gas pipe, branch nitrogen gas pipe, and set up the control cabin pressure sensor at the control cabin outer wall of the safe room of charging of wireless in pit, and set up the cabin pressure sensor that charges of the cabin outer wall of charging of the safe room of charging of wireless in pit.

This technical scheme the safe room of wireless charging in pit fill nitrogen malleation explosion-proof system, still including setting up first solenoid valve, the second solenoid valve on first nitrogen gas-supply pipe, second nitrogen gas-supply pipe.

This technical scheme wireless safety house that charges in pit fill nitrogen malleation explosion-proof system, still include the reserve nitrogen gas pipe of being connected with main nitrogen gas pipe, and with reserve nitrogen gas tank of reserve nitrogen gas pipe connection, and set up on main nitrogen gas pipe and be located the third solenoid valve between reserve nitrogen gas pipe, the nitrogen gas pipe.

This technical scheme wireless charge safety house's in pit fill nitrogen malleation explosion-proof system still include with divide nitrogen gas pipe connection's pressure boost air duct, and set up the fourth solenoid valve on the pressure boost air duct, and the booster fan who is connected with the pressure boost air duct, and set up on dividing the nitrogen gas pipe and be located the fifth solenoid valve of two-way joint one side, and with fill the distal end intelligent control ware that nitrogen malleation explosion-proof system cooperateed and uses.

The invention provides a working method of a nitrogen-filled positive pressure explosion-proof system of an underground wireless charging safety house, which comprises the following steps:

step 1, after a far-end intelligent controller receives a nitrogen filling control signal of a safety house, starting an air pump to pump out nitrogen in a nitrogen tank through a two-way joint, a branch nitrogen guide pipe, a main nitrogen guide pipe, a branch nitrogen guide pipe, a first nitrogen gas conveying pipe and a second nitrogen gas conveying pipe and fill a control cabin of the underground wireless charging safety house and a charging cabin of the underground wireless charging safety house, wherein a fifth electromagnetic valve, a first electromagnetic valve and a second electromagnetic valve are all in an open state in the nitrogen filling process; step 2, the far-end intelligent controller monitors the pipeline pressure states of the main nitrogen guide pipe and the nitrogen distribution guide pipe through feedback signals of the first pressure sensor and the second pressure sensor, monitors the pressure states in the control cabin and the charging cabin through the control cabin pressure sensor and the charging cabin pressure sensor, and repeats the action of the step 1 when the pressure states in the control cabin and the charging cabin are lower than preset values; and 3, when the pressure in the control cabin and the charging cabin is lower than a preset value and the pressure in the control cabin and the charging cabin is still lower than the preset value after the action of the step 1 is repeated, at the moment, the far-end intelligent controller controls to start the booster fan and open the fourth electromagnetic valve to synchronously boost the pressure in the control cabin and the charging cabin through the booster air duct and the air pump.

According to the other working mode of the step 3 in the technical scheme, when the pressure in the control cabin and the charging cabin is lower than a preset value, the far-end intelligent controller controls the air pump to be closed and the fifth electromagnetic valve to be closed, and meanwhile, the far-end intelligent controller controls the booster fan to be started and the fourth electromagnetic valve to be opened to boost the pressure in the control cabin and the charging cabin through the booster air duct.

When nitrogen in the nitrogen tank is not enough, the remote intelligent controller opens the third electromagnetic valve, and step 1 is repeated to pump out the nitrogen in the standby nitrogen tank to fill the control cabin of the underground wireless charging safety room and the charging cabin of the underground wireless charging safety room.

Compared with the prior art, the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house and the working method thereof have the advantages that: 1. when the underground wireless charging safety house is closed or opened, the inside of the underground wireless charging safety house (after nitrogen charging) is always maintained to be a positive-pressure environment system (the internal environmental pressure of the underground wireless charging safety house is greater than the external environmental pressure of the underground wireless charging safety house), and external inflammable and explosive gases cannot enter; 2. the intelligent nitrogen-filling positive-pressure explosion-proof control can be realized, manual control is not needed, intelligent control reaction is timely, labor is saved, reliability and safety are effectively improved, and the automatic charging process and equipment of the inspection robot are ensured to meet the requirements of GB 3836.1-5; 3. when patrolling and examining the robot and getting into wireless safety house that charges in the pit, because of the inside nitrogen gas that is full of wireless safety house that charges in the pit under the encapsulated situation, nitrogen gas has explosion-proof characteristic simultaneously, charges for patrolling and examining the robot and provides a charging environment who stops charging device and probably take place high temperature detonation hidden danger.

Drawings

FIG. 1 is a block diagram of the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house of the present invention in combination with the underground wireless charging safety house;

fig. 2 is a schematic structural diagram of a downhole wireless charging safety house.

Detailed Description

The invention will be further elucidated with reference to the drawing.

The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house comprises a nitrogen tank 1, a nitrogen guide pipe 2 connected with the nitrogen tank 1, a main nitrogen guide pipe 3 connected with the nitrogen guide pipe 2, a branch nitrogen guide pipe 6 connected with the main nitrogen guide pipe 3, a two-way connector 5 matched with the branch nitrogen guide pipe 6 for use, an air pump 4, a branch nitrogen guide pipe 7 connected with the two-way connector 5, and a first nitrogen gas pipe 8 and a second nitrogen gas pipe 9 respectively connected with the branch nitrogen guide pipe 7, wherein the first nitrogen gas pipe 8 is connected with the outer wall of a control cabin (shown in figure 2) of the underground wireless charging safety house, and the second nitrogen gas pipe 9 is connected with the outer wall of a charging cabin (shown in figure 2) of the underground wireless charging safety house.

The nitrogen-charging positive pressure explosion-proof system of the underground wireless charging safety house in the technical scheme is preferable, and further comprises a first pressure sensor 13 and a second pressure sensor 14 which are arranged on the main nitrogen guide pipe 3 and the nitrogen distribution guide pipe 7, a control cabin pressure sensor 15 which is arranged on the outer wall of a control cabin of the underground wireless charging safety house, and a charging cabin pressure sensor 16 which is arranged on the outer wall of the charging cabin of the underground wireless charging safety house.

The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house in the technical scheme is preferable and further comprises a first electromagnetic valve 10 and a second electromagnetic valve 11 which are arranged on a first nitrogen gas conveying pipe 8 and a second nitrogen gas conveying pipe 9.

The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house in the technical scheme is preferable, and further comprises a standby nitrogen guide pipe 18 connected with the main nitrogen guide pipe 3, a standby nitrogen tank 17 connected with the standby nitrogen guide pipe 18, and a third electromagnetic valve 19 arranged on the main nitrogen guide pipe 3 and located between the standby nitrogen guide pipe 18 and the nitrogen guide pipe 2.

The nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house of the technical scheme is preferable, and further comprises a pressurizing air guide pipe 21 connected with the nitrogen-dividing guide pipe 7, a fourth electromagnetic valve 22 arranged on the pressurizing air guide pipe 21, a pressurizing fan 20 connected with the pressurizing air guide pipe 21, a fifth electromagnetic valve 23 arranged on the nitrogen-dividing guide pipe 7 and located on one side of the two-way connector 5, and a far-end intelligent controller matched with the nitrogen-filled positive pressure explosion-proof system for use.

The working method of the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house comprises the following steps: step 1, after a far-end intelligent controller receives a nitrogen filling control signal of a safety house, starting an air pump 4 to pump out nitrogen in a nitrogen tank 1 through a two-way connector 5, a branch nitrogen guide pipe 6, a nitrogen guide pipe 2, a main nitrogen guide pipe 3, a branch nitrogen guide pipe 7, a first nitrogen gas conveying pipe 8 and a second nitrogen gas conveying pipe 9 and fill a control cabin of the underground wireless charging safety house and a charging cabin of the underground wireless charging safety house, wherein a fifth electromagnetic valve 23, a first electromagnetic valve 10 and a second electromagnetic valve 11 are all in an open state in the nitrogen filling process; step 2, the far-end intelligent controller monitors the pipeline pressure states of the main nitrogen guide pipe 3 and the nitrogen distribution guide pipe 7 through feedback signals of the first pressure sensor 13 and the second pressure sensor 14, monitors the pressure states in the control cabin and the charging cabin through the control cabin pressure sensor 15 and the charging cabin pressure sensor 16, and repeats the action of the step 1 when the pressure states in the control cabin and the charging cabin are lower than a preset value (preset pressure data information of the far-end intelligent controller) (a negative pressure state, and inflammable gas contained in the underground coal mine enters the control cabin and the charging cabin); and 3, when the pressure in the control cabin and the charging cabin is lower than a preset value (a negative pressure state, flammable gas contained in the underground coal mine enters the control cabin and the charging cabin), and the pressure in the control cabin and the charging cabin is still lower than the preset value after the action of the step 1 is repeated, at the moment, the remote intelligent controller controls to start the booster fan 20, open the fourth electromagnetic valve 22 and synchronously pressurize the control cabin and the charging cabin through the booster air duct 21 and the air pump 4.

In another working mode of step 3 of the technical scheme, when the pressure in the control cabin and the charging cabin is lower than a preset value (a negative pressure state, flammable gas contained in the underground coal mine enters the control cabin and the charging cabin), the far-end intelligent controller controls the air extracting pump 4 to be closed and the fifth electromagnetic valve 23 to be closed, and simultaneously, the far-end intelligent controller controls the booster fan 20 to be started and the fourth electromagnetic valve 22 to be opened to pressurize the control cabin and the charging cabin through the booster air duct 21.

Wherein, when nitrogen gas is not enough in nitrogen gas jar 1 among this technical scheme, third solenoid valve 19 is opened to distal end intelligent control ware, and step 1 is repeated to take out the nitrogen gas in reserve nitrogen gas jar 17 and fill in the control cabin of wireless safety room that charges in the pit, the cabin that charges in the cabin that charges of wireless safety room in the pit.

According to the working method of the nitrogen-filled positive pressure explosion-proof system of the underground wireless charging safety house, when the pressure states in the control cabin and the charging cabin are still lower than the preset value after the processing, the far-end intelligent controller sends out early warning information to warn.

The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.