An auxiliary rescue device for mine fire

Abstract

The present invention discloses an auxiliary rescue device for mine fire period. It includes a crawler mobile chassis, a smoke elimination unit, a fire extinguishing unit, a detection unit, a respiratory protection unit, a roof protection unit, and a control unit. There is a rotating platform above the crawler mobile chassis, and a housing is fixedly arranged on the rotating platform. Inside the housing, there are a water storage tank, a smoke elimination agent storage tank, and a fire extinguishing agent storage tank. At the bottom of the water storage tank, there are a first water pump, a second water pump, and a third water pump. The water outlet end of the first water pump is connected to the water inlet end of the smoke elimination unit through a first water pipe, the water outlet end of the second water pump is connected to the water inlet end of the fire extinguishing unit through a second water pipe, and the water outlet end of the third water pump is connected to the water inlet end of the roof protection unit through a third water pipe. The structure of the present invention is simple and flexible, and it can complete complex work in harsh environments. It can achieve single-point fire extinguishing and multi-point fire extinguishing, is easy to manufacture, has a stable structure, is convenient to operate, and has a good market promotion and application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of mine fire prevention and control, and particularly relates to an auxiliary rescue device for mine fires. Background Art

[0002] Underground mines are typical complex confined spaces. In the event of a fire during production, on-site flue gas and the like will pose great challenges to emergency rescue. If the underground hazards cannot be timely detected or an effective safe space cannot be created for rescue personnel during the emergency rescue process, it will affect the effective control of the fire scene or the carrying out of effective rescue, and may cause major rescue accidents. Therefore, it is very necessary to create an auxiliary rescue device for mine rescue personnel during fires, which is of great significance for the effective development of mine fire rescue work.

[0003] Application No. 202021545436.6 discloses a strong wind fire extinguishing robot. This robot creates strong winds by driving an impeller to rotate at high speed by a motor to disperse the flue gas, thereby reducing the temperature of the combustibles and extinguishing the fire. However, the flexibility of this robot is insufficient, and it cannot achieve the conversion between single-point and multi-point fire extinguishing and smoke elimination. At the same time, creating strong winds is not conducive to rescue personnel following up for rescue simultaneously, and it is not suitable for use in auxiliary rescue in underground confined spaces.

[0004] Application No. 202110569330.2 discloses a fire fighting robot with a smoke purification function. This robot generates a pressure difference by an air pump, uses a flow deflector to expand the range of smoke absorption, and the inhaled smoke is mixed with water and then passes through a filter plate in a water tank to achieve the purification of the smoke. However, the smoke elimination efficiency of this robot is not high, and it is not suitable for the complex environment of underground mines. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the present invention provides an auxiliary rescue device for mine fires, which can automatically navigate, avoid obstacles and perform intelligent smoke elimination and fire extinguishing, with a significant smoke purification effect; it can achieve single-point fire extinguishing and multi-point fire extinguishing, and make targeted protection for respiratory safety, roof safety, etc.

[0006] To achieve the above object, the present invention adopts the following technical solutions. An auxiliary rescue device for mine fire period includes a crawler mobile chassis, a smoke elimination unit, a fire extinguishing unit, a detection unit, a respiratory protection unit, a roof protection unit, and a control unit. A rotating platform is provided above the crawler mobile chassis, and a housing is fixedly provided on the rotating platform. A water storage tank, a smoke elimination agent storage tank, and a fire extinguishing agent storage tank are provided inside the housing. A first water pump, a second water pump, and a third water pump are provided at the bottom of the water storage tank. The water outlet end of the first water pump is connected to the water inlet end of the smoke elimination unit through a first water pipe. The water outlet end of the second water pump is connected to the water inlet end of the fire extinguishing unit through a second water pipe. The water outlet end of the third water pump is connected to the water inlet end of the roof protection unit through a third water pipe. The liquid outlet end of the smoke elimination agent storage tank is communicated with the first water pipe. The upper end of the fire extinguishing agent storage tank is connected to a fire extinguishing agent activation device, and the fire extinguishing agent activation device and the second water pipe are connected to the fire extinguishing unit through a pressure pump.

[0007] The smoke elimination unit includes a telescopic support rod, a Venturi injection pipe, and a centrifugal fan. The Venturi injection pipe is provided on the telescopic support rod. The right side of the Venturi injection pipe is connected to the centrifugal fan. The base of the centrifugal fan is connected to the housing, and the connection part is driven by a steering gear.

[0008] The smoke elimination agent storage tank is used to store the smoke elimination agent solution, which is prepared by mixing sodium dodecylbenzenesulfonate, coconut oil amide propyl-2-hydroxy-3-sulfopropyl betaine, polyacrylamide, sodium benzoate, sodium chloride, and water in proportion.

[0009] The fire extinguishing unit includes a new type of multifunctional intelligent sprinkler head, a rotating arm, and a fire extinguishing driver. The new type of multifunctional intelligent sprinkler head is composed of a main sprinkler head and small multi-directional sprinkler heads. The main sprinkler head is located in the center of the sprinkler head. The small multi-directional sprinkler heads are composed of eight tiny sprinkler heads, and the small sprinkler heads are distributed in an array around the main sprinkler head. The fire extinguishing driver switches between a single-point fire extinguishing mode and a multi-point fire extinguishing mode according to the detection results and adjusts the sprinkler head direction.

[0010] The detection unit includes an infrared thermal imaging sensor, a gas sensor, a laser sensor, and a ultrasonic sensor. The infrared thermal imaging sensor is arranged above the housing to detect the fire source or high-temperature point in cooperation. The gas sensor is arranged above the housing and is connected to the control unit through a circuit. The laser sensor and the ultrasonic sensor are arranged at the front end of the crawler mobile chassis to achieve intelligent navigation and obstacle avoidance.

[0011] When the gas sensor detects that the preset gas concentration exceeds the range, it issues an audible and visual alarm command. When the oxygen concentration is detected to be too low, it reminds the rescue personnel to wear a breathing mask effectively; when the concentrations of gases such as carbon monoxide, nitric oxide, and nitrogen dioxide are detected to be too high, it reminds the rescue personnel to strengthen respiratory protection; when the methane gas concentration is within the explosion concentration range, it reminds the rescue personnel to evacuate.

[0012] The respiratory protection unit includes a gas storage tank, a pressure stabilizing valve, an air filter, a gas-water separator, a breathing mask, and an air delivery pipe. An interface connected to the underground compressed air pipeline is provided outside the gas storage tank, and a gas-water separator is provided at the interface; an air filter is provided at the connection between the gas storage tank and the air delivery pipe; the breathing mask is arranged in the storage box outside the housing for easy use by personnel.

[0013] The roof protection unit includes a support plate, a water spraying rod, small nozzles, and a support grip. The support plate is fixed above the housing through a first base, and it is used in a folded manner by connecting a rotating robotic arm; multiple small nozzles are provided above the water spraying rod, and it is connected and fixed above the housing through a second base. The small nozzles are connected to the water tank through a third water pipe.

[0014] The control unit is a PLC controller, which is arranged inside the housing to receive the external signals feedback by the detection unit and the internal signals indicating the operating states of each unit, and transmits the received signals to the wearable mobile device of the rescue personnel. The rescue personnel receive the feedback and alarm information of the auxiliary rescue device through the wearable mobile device and issue commands to the auxiliary rescue device to achieve intelligent emergency rescue with human-machine combination.

[0015] The beneficial effects of the present invention:

[0016] An auxiliary rescue device for mine fire period of the present invention has a simple and flexible structure, and can complete complex work in a harsh environment. It can achieve single-point fire extinguishing and multi-point fire extinguishing, is easy to manufacture, has a stable structure, is convenient to operate, and has a good market promotion and application prospect. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an auxiliary rescue device for mine fire period of the present invention;

[0018] Figure 2 It is a schematic structural diagram of a new multi-functional intelligent nozzle of an auxiliary rescue device for mine fire period of the present invention;

[0019] Figure 3 It is a schematic structural diagram of an auxiliary rescue device for mine fire period of the present invention in the use state of the roof protection unit.

[0020] Wherein: 1 - crawler mobile chassis; 2 - rotating platform; 3 - pressure stabilizing valve; 4 - water storage tank; 5 - smoke suppressant storage tank; 6 - fire extinguishing agent storage tank; 7 - proportional addition device; 8 - telescopic support rod; 9 - liquid injection pipe; 10 - Venturi injection pipe; 11 - centrifugal fan; 12 - steering gear; 13 - ultrasonic sensor; 14 - laser sensor; 15 - infrared thermal imaging sensor; 16 - gas-water separator; 17 - pressure pump; 18 - second water pipe; 19 - new type multifunctional intelligent sprinkler head; 1901 - main sprinkler head; 1902 - small multi-directional sprinkler head; 20 - gas sensor; 21 - control unit; 22 - rotating robotic arm; 23 - small sprinkler head; 24 - water spraying rod; 25 - support plate; 26 - compressed air pipeline interface; 27 - breathing mask; 28 - air delivery pipe; 29 - first base; 30 - second base; 31 - air filter; 32 - third water pipe; 33 - support grip; 34 - third water pump; 35 - first water pump; 36 - second water pump; 37 - water supply port; 38 - first water pipe; 39 - fire extinguishing agent activation device; 40 - housing; 41 - gas storage tank; 42 - fire extinguishing driver; 43 - rotating arm. Detailed implementation mode

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] As Figures 1 - 3 shown, an auxiliary rescue device for mine fire period includes: a crawler mobile chassis 1, a smoke elimination unit, a fire extinguishing unit, a detection unit, a respiratory protection unit, a roof protection unit, and a control unit 21; a rotating platform 2 is arranged above the crawler mobile chassis 1, and a housing 40 is fixedly arranged on the rotating platform 2; a water storage tank 4, a smoke suppressant storage tank 5, and a fire extinguishing agent storage tank 6 are arranged inside the housing 40; a first water pump 35, a second water pump 36, and a third water pump 34 are arranged at the bottom of the water storage tank 4, and the water outlet end of the first water pump 35 is connected to the water inlet end of the smoke elimination unit through a first water pipe 38; the water outlet end of the second water pump 36 is connected to the water inlet end of the fire extinguishing unit through a second water pipe 18; the water outlet end of the third water pump 34 is connected to the water inlet end of the roof protection unit through a third water pipe 32; the liquid outlet end of the smoke suppressant storage tank 5 is communicated with the first water pipe 38; the upper end of the fire extinguishing agent storage tank 6 is connected to a fire extinguishing agent activation device 39, and the fire extinguishing agent activation device 39 and the second water pipe 18 are connected to the fire extinguishing unit through a pressure pump 17; the smoke elimination unit and the fire extinguishing unit are connected to both ends of the housing 40; the detection unit is installed at the upper end of the housing 40; the respiratory protection unit is installed above the inside of the housing 40; the roof protection unit is installed above the housing 40; the control unit 21 is installed inside the housing 40.

[0023] The smoke elimination unit includes a smoke elimination agent storage tank 5, a centrifugal fan 11, and a Venturi injection pipe 10. The water inlet end of the smoke elimination agent storage tank 5 and the left outlet of the water storage tank 4 are connected by a first water pipe 38, and the smoke elimination agent and water are mixed in proportion through a proportional addition device 7. The Venturi injection pipe 10 is fixed by a telescopic support rod 8, and the bottom end of the throat is connected to a liquid injection pipe 9; the base of the centrifugal fan 11 is connected to the upper end of the housing through a steering gear 12, and the smoke elimination agent mixture passing through the throat of the Venturi injection pipe 10 is blown out for smoke elimination.

[0024] The fire extinguishing unit includes a fire extinguishing agent storage tank 6, a pressure pump 17, a fire extinguishing agent activation device 39, and a new type of multi-functional intelligent sprinkler 19. The upper outlet of the fire extinguishing agent storage tank 6 is provided with a fire extinguishing agent activation device 39. The fire extinguishing agent activation device 39 and the right outlet of the water storage tank 4 are joined together through a second water pipe 18 and flow into the water inlet of the pressure pump 17; the pressure pump 17 is connected to the new type of multi-functional intelligent sprinkler 19, and the end of the new type of multi-functional intelligent sprinkler 19 is connected to the housing 40 through a rotating arm 43; the fire extinguishing agent activation device 39 has the effect of improving the fire extinguishing effect of the fire extinguishing agent; the new type of multi-functional intelligent fire sprinkler 19 swings up and down through the lower rotating arm 43; the water storage tank 4 can be connected to an external water source. When there is no external water source, the water storage tank 4 serves as a temporary water source supply; the fire extinguishing agent storage tank 6 is provided with a replenishment port.

[0025] The new type of multi-functional intelligent sprinkler 19 includes a main sprinkler 1901 located in the middle position and peripheral small multi-directional sprinklers 1902. The main sprinkler 1901 is located in the center of the sprinkler; the small multi-directional sprinklers 1902 are composed of eight tiny sprinklers, and the small sprinklers are distributed in an array around the main sprinkler; the new type of multi-functional intelligent sprinkler 19 can achieve single-point concentrated fire extinguishing or multi-point high-efficiency fire extinguishing.

[0026] The detection unit includes an ultrasonic sensor 13, a laser sensor 14, an infrared thermal imaging sensor 15, and a gas sensor 20. The ultrasonic sensor 13 and the laser sensor 14 are located at the front end of the rotating platform 2, used to locate the fuselage to determine the position, and are connected to the control unit 21 through a circuit; the infrared thermal imaging sensor 15 and the gas sensor 20 are placed on the upper cover of the housing 40 from left to right in sequence; the infrared thermal imaging sensor 15 serves to discover the position of the fire source or high-temperature point for emergency rescue; the gas sensor 20 is used to detect the smoke components, and the infrared thermal imaging sensor 15 and the gas sensor 20 are connected to the control unit 21 through a circuit.

[0027] The respiratory protection unit includes an air storage tank 41, a pressure stabilizing valve 3, a gas-water separator 16, a breathing mask 27, and an air delivery pipe 28 between the air storage interface of the air storage tank 41 and the air intake interface of the breathing mask 27. An interface for connecting to the underground compressed air pipeline 26 is provided outside the air storage tank 41, and a gas-water separator 16 is provided at the connection; an air filter 31 is provided at the connection between the air storage tank 41 and the air delivery pipe 28, and the air filter 31 is used to filter impurities; the breathing mask 27 is arranged in the storage box outside the housing for easy use by rescue workers.

[0028] The rescue protection unit includes a support plate 25, a water spraying rod 24, small spray nozzles 23, and a support grip 33. The support plate 25 is fixed above the housing 40 through a first base 29 and is folded using a connecting rotating belt; multiple small spray nozzles 23 are provided above the water spraying rod 24, and it is connected and fixed above the housing through a second base 30. The small spray nozzles 23 are connected to the water storage tank 4 through a third water pipe 32 to spray water mist to form a mist curtain to block the spread of fire.

[0029] The control unit 21 is a PLC controller. The PLC controller is installed at the central position on the right side of the housing to receive external signals fed back by the detection unit and internal signals indicating the operating states of each unit, and transmit the received signals to the mobile devices of the rescue workers. The rescue workers receive the feedback and alarm signals of the robot through a remote controller and send instructions to the robot to achieve intelligent emergency rescue with human-machine combination.

[0030] The following describes the usage process and principle of the present invention with reference to the accompanying drawings:

[0031] First, according to the actual situation of the mine, the auxiliary rescue device can be externally connected to the underground water supply pipeline or water can be injected into the water storage tank 4 in advance. Fire extinguishing agent is added to the fire extinguishing agent storage tank 6, and the passage for the fire extinguishing agent to enter the pressurizing pump 17 is opened; if not in use, water is injected into the pressurizing pump 17. At the same time, smoke extinguishing agent is injected into the smoke extinguishing agent storage tank 5 for standby.

[0032] After the above preparatory work is completed, the infrared thermal imaging sensor 15 and the gas sensor 20 are started, and the auxiliary rescue device starts to move forward in the underground roadway under the accompaniment of the rescue workers. During the forward movement, the ultrasonic sensor 13 identifies obstacles in the front fan-shaped area and avoids them, and then the laser sensor 14 is used to assist in judging the safe distance.

[0033] After determining the location of the fire source or high-temperature point, the auxiliary rescue device rotates the rotating platform 2 to orient the fire extinguishing unit towards the fire source. According to the distribution of the fire source, the fire extinguishing mode of the new multi-functional intelligent sprinkler 19 is adjusted through the fire extinguishing driver 42: single-point fire extinguishing or multi-point fire extinguishing. The rotating arm 43 drives the new multi-functional intelligent sprinkler 19 to swing up and down to adjust the position. After adjustment, the fire extinguishing agent and water flow into the pressure pump 17 to form pressurized fire extinguishing agent, which is ejected from the sprinkler for fire extinguishing. When the fire spreads and approaches the rescue personnel and the auxiliary rescue device, the support plate 25 and the water spraying rod 24 are driven to move around by the rotating robotic arm 22 to form the protection of the support plate 25 and the fog curtain, blocking the spread of the fire or preventing the collapse of the support plate 25.

[0034] Meanwhile, after the gas sensor 20 detects the smoke signal, the proportional addition device 7 mixes water and the smoke suppressant in a fixed proportion, transports the smoke suppressant to the throat of the Venturi injection pipe 10 through the liquid injection pipe 9, and at the same time starts the centrifugal fan 11 to eject the smoke suppressant with the help of the air flow to achieve large-scale smoke elimination. When the gas sensor 20 detects that the oxygen concentration in the environment is too low or the concentration of toxic and harmful gases exceeds the standard, the switch of the respiratory protection unit is activated to provide auxiliary supplement for the respiratory protection of the rescue personnel.

[0035] When each unit is operating, the control unit 21 will always feedback the sensor signals to the portable mobile device of the rescue personnel to achieve real-time communication. The auxiliary rescue device can eliminate smoke and extinguish fire according to the established procedure or be controlled by the rescue personnel for effective disposal.

Claims

1. An auxiliary rescue device for use during mine fires, characterized in that: It includes a crawler mobile chassis, a smoke elimination unit, a fire extinguishing unit, a detection unit, a respiratory protection unit, a roof protection unit, and a control unit; a rotating platform is provided above the crawler mobile chassis, and a housing is fixedly provided on the rotating platform; a water storage tank, a smoke elimination agent storage tank, and a fire extinguishing agent storage tank are provided inside the housing; a first water pump, a second water pump, and a third water pump are provided at the bottom of the water storage tank, and the water outlet end of the first water pump is connected to the water inlet end of the smoke elimination unit through a first water pipe; the water outlet end of the second water pump is connected to the water inlet end of the fire extinguishing unit through a second water pipe; the water outlet end of the third water pump is connected to the water inlet end of the roof protection unit through a third water pipe; the liquid outlet end of the smoke elimination agent storage tank is communicated with the first water pipe; the upper end of the fire extinguishing agent storage tank is connected to a fire extinguishing agent activation device, and the fire extinguishing agent activation device and the second water pipe are connected to the fire extinguishing unit through a pressure pump; The roof protection unit includes a support plate, a water spray rod, small nozzles, and a support grip; the support plate is fixed above the housing through a first base, and the support plate is connected to a rotating robotic arm for folding use; multiple small nozzles are provided above the water spray rod, the water spray rod is connected and fixed above the housing through a second base, and the small nozzles are connected to the water tank through a third water pipe; The respiratory protection unit includes an air storage tank, a pressure stabilizing valve, an air filter, a gas-water separator, a breathing mask, and an air delivery pipe; an interface connected to the underground compressed air pipeline is provided outside the air storage tank, and a gas-water separator is provided at the interface; an air filter is provided at the connection between the air storage tank and the air delivery pipe; the breathing mask is arranged in the storage box outside the housing for easy use by personnel.

2. The auxiliary rescue device for use during mine fires according to claim 1, wherein: The smoke elimination unit includes a telescopic support rod, a Venturi injection pipe, and a centrifugal fan; the Venturi injection pipe is provided on the telescopic support rod, the right side of the Venturi injection pipe is connected to the centrifugal fan, and the base of the centrifugal fan is connected to the upper end of the housing through a steering gear.

3. An auxiliary rescue device for mine fire period according to claim 1, characterized in that: The smoke elimination agent storage tank is used to store the smoke elimination agent solution, and the smoke elimination agent solution is prepared by mixing sodium dodecylbenzenesulfonate, cocamidopropyl-2-hydroxy-3-sulfopropyl betaine, polyacrylamide, sodium benzoate, sodium chloride, and water in proportion.

4. The auxiliary rescue device for mine fire period according to claim 1, wherein: The fire extinguishing unit includes a new type of multi-functional intelligent nozzle, a rotating arm, and a fire extinguishing driver; the new type of multi-functional intelligent nozzle is composed of a main nozzle and small multi-directional nozzles; the main nozzle is located in the center of the nozzle, and the small multi-directional nozzles are composed of eight tiny nozzles combined, and the eight tiny nozzles are distributed in an array around the main nozzle; the fire extinguishing driver switches between a single-point fire extinguishing mode and a multi-point fire extinguishing mode according to the detection results and adjusts the nozzle direction.

5. An auxiliary rescue device for mine fire period according to claim 1, characterized in that: The detection unit includes an infrared thermal imaging sensor, a gas sensor, a laser sensor, and an ultrasonic sensor; the infrared thermal imaging sensor is arranged above the housing to detect a fire source or a high-temperature point in cooperation; the gas sensor is arranged above the housing and is connected to the control unit through a circuit; the laser sensor and the ultrasonic sensor are arranged at the front end of the crawler mobile chassis to achieve intelligent navigation and obstacle avoidance.

6. The auxiliary rescue device for use during mine fires according to claim 5, characterized in that: When the gas sensor detects that the preset gas concentration exceeds the range, it issues an audible and visual alarm instruction; when the oxygen concentration is detected to be too low, it reminds the rescue personnel to wear a breathing mask effectively; when the gas concentrations of carbon monoxide, nitric oxide, and nitrogen dioxide are detected to be too high, it reminds the rescue personnel to strengthen respiratory protection; when the methane gas concentration is within the explosion concentration range, it reminds the rescue personnel to evacuate.

7. The auxiliary rescue device for mine fire period according to claim 1, characterized in that: The control unit is a PLC controller, which is arranged inside the housing to receive the external signals fed back by the detection unit and the internal signals indicating the operating states of each unit, and transmits the received signals to the wearable mobile device of the rescue personnel; the rescue personnel receive the feedback and alarm information of the auxiliary rescue device through the wearable mobile device and issue instructions to the auxiliary rescue device to achieve intelligent emergency rescue with human-machine combination.

Images