Automatic fire extinguishing device for coal mine tunnel

Abstract

The utility model provides an automatic fire extinguishing device for a coal mine tunnel, which comprises an upper management machine, the upper management machine is connected with a ZigBee coordinator, and the ZigBee coordinator is in communication connection with a plurality of fire extinguishing units; the fire extinguishing unit is provided with a dry powder storage tank and a controller, a connecting pipe is arranged at the bottom end of the dry powder storage tank, a spraying head is arranged at the bottom end of the connecting pipe, an electromagnetic valve, a temperature sensor and a pressure sensor are arranged on the connecting pipe, and the electromagnetic valve, the temperature sensor and the pressure sensor are all connected with the controller. The controller is connected with a ZigBee node which is in communication connection with the ZigBee coordinator; manual regular inspection is not needed, labor expenditure is reduced, pressure abnormity can be found in time, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire fighting equipment, and in particular relates to an automatic fire extinguishing device for a coal mine tunnel. Background Art

[0002] Coal mine tunnels refer to passages used for coal transportation during coal mining. Some fires in coal mine tunnels are caused by fires in electromechanical equipment, which have the characteristics of obvious fire sources, sudden occurrence, and fierceness. At present, such fires are extinguished by hanging dry powder fire extinguishers above electromechanical equipment.

[0003] The suspended dry powder fire extinguishing device is equipped with a temperature-sensitive glass ball at the nozzle of the sprinkler head. Under normal circumstances, the upper end of the glass ball presses against the sealing piece at the nozzle. When a fire occurs, the temperature rises, and the liquid in the glass ball automatically expands and breaks due to the heat, and the sealing piece automatically falls off. The dry powder agent in the fire extinguishing device is sprayed out from the nozzle under the action of nitrogen to extinguish the fire. In order to ensure that the dry powder agent can be sprayed out after the glass ball breaks, it is necessary to manually check the pressure gauge of the fire extinguisher regularly to ensure that its pressure is normal; the number of suspended dry powder fire extinguishing devices used in coal mine tunnels is large and relatively scattered, and manual regular inspections usually take a lot of time; and it is difficult to detect abnormal pressure in time, which poses a safety hazard.

[0004] Therefore, it is necessary to design an automatic fire extinguishing device for coal mine tunnels that does not require manual regular inspections, reduces labor costs, can detect abnormal pressure in time, and reduces safety hazards to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides an automatic fire extinguishing device for coal mine tunnels which does not require manual regular inspections, reduces labor costs, can promptly detect abnormal pressure, and reduces safety hazards.

[0006] The technical solution of the utility model is: an automatic fire extinguishing device for coal mine tunnels, comprising an upper management machine, the upper management machine is connected to a ZigBee coordinator, and the ZigBee coordinator is communicatively connected to a plurality of fire extinguishing units; the fire extinguishing unit has a dry powder storage tank and a controller, a connecting pipe is provided at the bottom end of the dry powder storage tank, a spray head is provided at the bottom end of the connecting pipe, a solenoid valve, a temperature sensor and a pressure sensor are provided on the connecting pipe, the solenoid valve, the temperature sensor and the pressure sensor are all connected to the controller, and the controller is connected to a ZigBee node communicatively connected to the ZigBee coordinator; the pressure sensor is used to detect the pressure value of the dry powder storage tank and send it to the controller; the temperature sensor is used to detect the temperature value of the environment in which it is located and send it to the controller.

[0007] A control box is fixedly arranged on one side of the connecting pipe, and the controller and the ZigBee node are arranged inside the control box.

[0008] The ZigBee coordinator is connected with an Ethernet module, and the Ethernet module is connected with the upper management machine.

[0009] A detachable hanging mechanism is arranged on the top of the dry powder storage tank.

[0010] The detachable suspension mechanism has a connection seat rotatably arranged on the top of the dry powder storage tank, a screw tube is rotatably arranged on the connection seat, a screw rod is threadedly assembled on the upper end of the screw tube, and a fixing plate is arranged on the upper end of the screw rod.

[0011] The outer side of the screw rod is equipped with a locking nut corresponding to the end of the screw tube, and the locking nut is a hand-tightening nut.

[0012] The controller is a single chip microcomputer minimum system.

[0013] The controller is connected to an analog-to-digital converter, and the temperature sensor and the pressure sensor are both connected to the analog-to-digital converter.

[0014] The controller is connected with an audible and visual alarm.

[0015] Beneficial effects of the utility model:

[0016] (1) In the present invention, the pressure sensor can obtain the pressure value of the dry powder storage tank in real time. The controller receives the pressure value of the dry powder storage tank and compares it with the pressure setting value. When the pressure value of the dry powder storage tank is lower than the pressure setting value, the controller communicates with the ZigBee coordinator through the ZigBee node, and the ZigBee coordinator transmits the signal to the upper management machine through the internal network. When the pressure of the dry powder storage tank is abnormal, it can be discovered in time, without the need for manual regular inspections, thereby reducing labor costs;

[0017] (2) The temperature sensor can obtain the temperature value of the environment in real time. The controller receives the temperature value of the environment and compares it with the temperature setting value. When the temperature value of the environment reaches the temperature setting value, the controller controls the solenoid valve to open, and the dry powder agent in the dry powder storage tank is sprayed out from the spray head under the action of nitrogen to extinguish the fire. When a fire occurs, the solenoid valve can be directly controlled to open for fire extinguishing;

[0018] (3) The controller transmits the temperature value of the environment to the ZigBee coordinator through the ZigBee node, and the ZigBee coordinator then transmits the temperature value of the environment to the upper management machine through the internal network, thereby realizing remote temperature monitoring in the lane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the fire extinguishing unit in the utility model.

[0020] Figure 2 The utility model is a functional block diagram of the automatic fire extinguishing device for coal mine tunnels. DETAILED DESCRIPTION

[0021] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to be any limitation on the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limitations.

[0022] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] like Figure 1 and 2As shown, the automatic fire extinguishing device for coal mine tunnels includes an upper management machine 4, the upper management machine 4 is connected to a ZigBee coordinator 2, and the ZigBee coordinator 2 is communicatively connected to a plurality of fire extinguishing units 1; the fire extinguishing unit 1 has a dry powder storage tank 11 and a controller 19, a connecting pipe 14 is arranged at the bottom end of the dry powder storage tank 11, a spray head 15 is arranged at the bottom end of the connecting pipe 14, a solenoid valve 16, a temperature sensor 17 and a pressure sensor 13 are arranged on the connecting pipe 14, and the solenoid valve 16, the temperature sensor 17 and the pressure sensor 13 are arranged on the connecting pipe 14. 13 are connected to the controller 19, and the controller 19 is connected to a ZigBee node 191 that is connected to the ZigBee coordinator 2; the pressure sensor 13 is used to detect the pressure value of the dry powder storage tank 11 and send it to the controller 19; the temperature sensor 17 is used to detect the temperature value of the environment in which it is located and send it to the controller 19; in this embodiment, the pressure sensor 13 can obtain the pressure value of the dry powder storage tank 11 in real time, and the controller 19 receives the pressure value of the dry powder storage tank 11 and compares it with the pressure setting value. When the pressure value of 11 is lower than the pressure setting value, the controller 19 communicates with the ZigBee coordinator 2 through the ZigBee node 191, and the ZigBee coordinator 2 transmits the signal to the upper management machine 4 through the internal network. When the pressure abnormality occurs in the dry powder storage tank 11, it can be discovered in time, without the need for manual regular inspections, thereby reducing labor costs; the temperature sensor 17 can obtain the temperature value of the environment in real time, and the controller 19 receives the temperature value of the environment and compares it with the temperature setting value. When the temperature value of the environment reaches the temperature setting value, the controller 19 controls the solenoid valve 16 to open, and the dry powder agent in the dry powder storage tank 11 is sprayed out from the spray head 15 under the action of nitrogen to extinguish the fire. When a fire occurs, the solenoid valve 16 can be directly controlled to open for fire extinguishing; at the same time, the controller 19 communicates and transmits the temperature value of the environment with the ZigBee coordinator 2 through the ZigBee node 191, and the ZigBee coordinator 2 transmits the temperature value of the environment to the upper management machine 4 through the internal network, thereby realizing remote temperature monitoring in the lane.

[0024] In some embodiments, a control box 18 is fixedly installed on one side of the connecting pipe 14, and a controller 19 and a ZigBee node 191 are arranged inside the control box 18; the fire extinguishing unit 1 is powered by an external power supply, and the external power supply conditions the power supply and then supplies power to the fire extinguishing unit 1.

[0025] In some embodiments, the ZigBee coordinator 2 is connected to an Ethernet module 3 , and the Ethernet module 3 is connected to a host management machine 4 , thereby achieving data transmission between the ZigBee coordinator 2 and the host management machine 4 via Ethernet.

[0026] In some embodiments, a detachable suspension mechanism 12 is provided on the top of the dry powder storage tank 11, and the dry powder storage tank 11 can be detachably installed on the top of the tunnel through the detachable suspension mechanism 12. When the pressure of the dry powder storage tank 11 is abnormal, it is convenient to remove it for replacement or maintenance.

[0027] In some embodiments, the detachable suspension mechanism 12 has a connecting seat 121 rotatably set on the top of the dry powder storage tank 11, and a screw tube 122 is rotatably set on the connecting seat 121. The upper end of the screw tube 122 is internally threaded with a screw rod 124, and the upper end of the screw rod 124 is provided with a fixing plate 125, wherein the upper end of the screw rod 124 can be fixedly assembled on the top of the alley through the fixing plate 125, and the dry powder storage tank 11 is detachably threadedly connected with the screw rod 124 through the screw tube 122 at its top. When the pressure of the dry powder storage tank 11 is abnormal, the screw tube 122 and the screw rod 124 are separated, and the dry powder storage tank 11 can be removed for replacement or maintenance; in addition, by screwing to adjust the relative position between the screw tube 122 and the screw rod 124, the suspension height of the dry powder storage tank 11 can be adjusted to meet different height suspension requirements.

[0028] In some embodiments, the outer side of the screw rod 124 is equipped with a locking nut 123 corresponding to the end of the screw tube 122. After the height of the dry powder storage tank 11 is adjusted, the screw rod 124 and the screw tube 122 are locked and fixed by the locking nut 123 to ensure the stability of the suspension of the dry powder storage tank 11; more specifically, the locking nut 123 is a hand-tightened nut.

[0029] In some embodiments, the controller 19 is a single chip microcomputer minimum system.

[0030] In some embodiments, the controller 19 is connected to an analog-to-digital converter, and the temperature sensor 17 and the pressure sensor 13 are both connected to the analog-to-digital converter. The analog-to-digital converter is used to convert the analog signals output by the temperature sensor 17 and the pressure sensor 13 into digital signals.

[0031] In some embodiments, the controller 19 is connected to an audible and visual alarm 192. When the dry powder storage tank 11 has abnormal pressure or the ambient temperature reaches the set temperature value, the controller 19 activates the audible and visual alarm 192 to facilitate on-site personnel to detect and handle it in time.

[0032] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0033] The above-mentioned embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An automatic fire extinguishing device for coal mine tunnels, characterized in that: It includes an upper management machine, the upper management machine is connected to a ZigBee coordinator, and the ZigBee coordinator is communicatively connected to a plurality of fire extinguishing units; The fire extinguishing unit comprises a dry powder storage tank and a controller, a connecting pipe is provided at the bottom end of the dry powder storage tank, a spray head is provided at the bottom end of the connecting pipe, a solenoid valve, a temperature sensor and a pressure sensor are provided on the connecting pipe, the solenoid valve, the temperature sensor and the pressure sensor are all connected to the controller, and a ZigBee node connected to the ZigBee coordinator for communication is connected to the controller; The pressure sensor is used to detect the pressure value of the dry powder storage tank and send it to the controller; The temperature sensor is used to detect the temperature value of the environment in which it is located and send it to the controller.

2. The automatic fire extinguishing device for coal mine tunnels according to claim 1 is characterized in that: A control box is fixedly arranged on one side of the connecting pipe, and the controller and the ZigBee node are arranged inside the control box.

3. The automatic fire extinguishing device for coal mine tunnels according to claim 1 is characterized in that: The ZigBee coordinator is connected with an Ethernet module, and the Ethernet module is connected with the upper management machine.

4. The automatic fire extinguishing device for coal mine tunnels according to claim 1 is characterized in that: A detachable hanging mechanism is arranged on the top of the dry powder storage tank.

5. The automatic fire extinguishing device for coal mine tunnels according to claim 4 is characterized in that: The detachable suspension mechanism has a connection seat rotatably arranged on the top of the dry powder storage tank, a screw tube is rotatably arranged on the connection seat, a screw rod is threadedly assembled on the upper end of the screw tube, and a fixing plate is arranged on the upper end of the screw rod.

6. The automatic fire extinguishing device for coal mine tunnels according to claim 5 is characterized in that: The outer side of the screw rod is equipped with a locking nut corresponding to the end of the screw tube, and the locking nut is a hand-tightening nut.

7. The automatic fire extinguishing device for coal mine tunnels according to claim 1 is characterized in that: The controller is a single chip microcomputer minimum system.

8. The automatic fire extinguishing device for coal mine tunnels according to claim 1 is characterized by: The controller is connected to an analog-to-digital converter, and the temperature sensor and the pressure sensor are both connected to the analog-to-digital converter.

9. The automatic fire extinguishing device for coal mine tunnels according to claim 1, characterized in that: The controller is connected with an audible and visual alarm.

Images