Multifunctional potting intrinsically safe methane breaker

Abstract

The utility model provides a kind of multifunctional pouring seal intrinsically safe type methane power-off instrument, including shell, fixedly methane probe, explosion-proof cable introduction device, aviation plug, audible and visual alarm of being equipped on shell, pouring seal shell body being insulatedly arranged in shell with shell, circuit board for being controlled equipment power on-off control is implemented according to detection signal in pouring seal shell body, distributed methane probe for detecting methane concentration at the installed position is installed in the four around vehicle and is electrically connected with circuit board, more than one carbon monoxide sensor for real-time detection of carbon monoxide concentration is fixedly arranged on vehicle and is electrically connected with circuit board, and for the emergency power on-off control and parameter setting adjustment of battery output arranged on circuit board Remote controller. The utility model improves structure, its function is obviously enhanced relative to prior art, it is more convenient to use, cost-effective is higher, and can significantly improve the level of coal mine underground vehicle safety operation guarantee.

Description

Technical Field

[0001] This utility model relates to the technical field of explosion-proof monitoring tools and equipment in coal mines, specifically to a multifunctional intrinsically safe methane power-off device. Background Technology

[0002] To prevent methane (a flammable and explosive gas) concentrations in underground coal mines from igniting and exploding due to potential electrical sparks generated by vehicles, intrinsically safe methane cut-off devices are required on all vehicles. If the device detects a methane concentration exceeding a set threshold during operation, it forcibly cuts off power to the relevant electrical equipment (controlled devices) on the vehicle to prevent a methane explosion. Traditional intrinsically safe methane cut-off devices use an explosion-proof housing containing a circuit board, power module, and battery. A methane probe (also called a methane sensor) is fixedly mounted on the housing to detect methane concentration, and a rotary switch controls the supply of emergency DC power (typically DC 12-15V) after a power outage. Traditional intrinsically safe methane interruptors have large and heavy explosion-proof housings, making them bulky and expensive to install on vehicles. They are gradually being replaced by relatively cheaper and smaller potted intrinsically safe methane interruptors. However, like traditional explosion-proof housing methane interruptors, the currently used potted intrinsically safe methane interruptors also have a single methane probe fixed to the housing. When fixed in one location on a vehicle, they can only detect the methane concentration at the installation point, failing to comprehensively detect the methane concentration around the vehicle. Therefore, there is still a certain risk of methane ignition. Furthermore, besides detecting the methane concentration at the installation point, they cannot detect methane concentrations in other areas, such as coal mines. The function is to control the concentration of a common explosive gas, carbon monoxide (CO). Furthermore, according to relevant national standards, the casing of an intrinsically safe methane power-off device cannot be fitted with a rotary switch for controlling the on / off of emergency power output, as is the case with explosion-proof intrinsically safe methane power-off devices. Therefore, when external power is interrupted, the battery inside the existing intrinsically safe methane power-off device cannot control its output according to actual needs, regardless of whether the emergency equipment requires it. The battery continues to output power until it is depleted. The methane power-off device and the corresponding equipment can only be recharged and powered again when external power is restored. Moreover, changing the relevant parameters of the power-off device during use is extremely inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a structurally improved, multifunctional, intrinsically safe methane power-off device with encapsulation, in order to solve the problems existing in the current technology.

[0004] The technical solution of this utility model is as follows: This utility model's multifunctional encapsulated intrinsically safe methane power-off device includes a housing, a fixed methane probe fixedly mounted on the housing for detecting the methane concentration at the installation location, an explosion-proof cable entry device for power line entry and exit, an aviation plug for electrical connection of the signal line, an audible and visual alarm for issuing an alarm signal when the methane concentration reaches a set threshold, an encapsulated housing fixedly mounted inside the housing insulated from the housing, and a circuit board encapsulated in the encapsulated housing by epoxy resin for controlling the power supply of the controlled equipment according to the detection signal. The fixed methane probe and the audible and visual alarm are both electrically connected to the circuit board. Its structural feature is that it also includes a distributed methane probe fixedly mounted on the vehicle at a location away from the fixed methane probe and electrically connected to the circuit board for detecting the methane concentration at the installation location.

[0005] A further solution is that the aforementioned multifunctional encapsulated intrinsically safe methane power-off device also includes one or more carbon monoxide sensors that are electrically connected to the circuit board and used to detect the carbon monoxide concentration in coal mines in real time, which are fixedly installed on the vehicle.

[0006] A further solution is as follows: The aforementioned circuit board is equipped with a main control module for running the main control, a signal processing module for receiving and processing real-time detection information and sending it to the main control module, an execution module for controlling the power supply of the controlled equipment according to the instructions of the main control module, a power supply module for providing working power, a battery that is bidirectionally electrically connected to the power supply module for providing backup power, and a display for information display; the aforementioned fixed methane probe and distributed methane probe are both electrically connected to the signal processing module, and the audible and visual alarm, display, signal processing module, execution module, and power supply module are all electrically connected to the main control module, while the controlled equipment is electrically connected to the execution module.

[0007] A further solution is as follows: The aforementioned multifunctional potted intrinsically safe methane power-off device also includes a remote control, and the aforementioned circuit board is also provided with a wireless communication module for realizing wireless communication between the main control module and the remote control; an emergency on / off control module is provided on the circuit of the battery's external emergency DC power output for controlling the on / off of the battery's emergency DC power output according to the instructions of the main control module; the aforementioned wireless communication module and emergency on / off control module are both electrically connected to the main control module.

[0008] A further embodiment is as follows: the aforementioned housing includes a box-shaped housing with an opening at the top and a top cover that is detachably fixed to the top of the housing via an installed sealing ring; the aforementioned audible and visual alarm includes an alarm light and a buzzer fixed to the housing; the aforementioned explosion-proof cable entry device and aviation plug 4 are both fixed to the housing.

[0009] A further solution is to: fix a transparent observation window in the middle of the above-mentioned top cover; and provide a handle on the above-mentioned housing for easy handling.

[0010] This utility model has the following positive effects: (1) Based on the existing fixed methane probe, this utility model adds a distributed methane probe that is fixedly installed around the vehicle to detect the methane concentration around the vehicle. When the methane concentration detected by either the fixed methane probe or any of the distributed methane probes reaches the set threshold, an alarm is triggered and the power supply of the controlled equipment is cut off to prevent methane explosion accidents. This further improves the safety of underground vehicle operation in coal mines compared to existing similar equipment. (2) In addition to expanding the real-time methane concentration detection and explosion prevention function, this utility model also includes a carbon monoxide sensor for real-time detection of carbon monoxide concentration in coal mines to prevent carbon monoxide explosion accidents. This expands the function of this utility model, improves its cost-effectiveness, and further enhances the safety of underground vehicle operation in coal mines. (3) This utility model improves the structure by setting a remote control, adding a wireless communication module on the circuit board, and adding an emergency on / off control module on the circuit of the battery output emergency DC power supply, so that the battery output emergency power supply can be controlled by the remote control. When the battery power supply is not needed, the power supply is actively disconnected to extend the effective use time of the battery, thereby effectively solving the technical problem of uncontrollable battery emergency power supply output in the prior art. At the same time, by cooperating with the remote control and the display, the relevant parameters can be conveniently modified according to actual needs, thereby solving the technical problem of very inconvenient parameter modification in the prior art. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention when it is in a flat position, excluding the remote control, the distributed methane probe, and the carbon monoxide sensor. Figure 2 for Figure 1 A schematic diagram of the structure in its upright position; Figure 3 To remove Figure 2 A schematic diagram of the structure behind the upper and middle covers; Figure 4 This is a schematic diagram of the circuit structure of this utility model.

[0012] The reference numerals in the above figures are as follows: 1. Outer shell, 11. Handle 11-1, 12. Top cover, 12-1. Sealing ring, 12-2. Transparent observation window 12-2. 2. Fixed methane probe. 3. Explosion-proof cable entry device. 31. Rubber-sheathed flexible cable. 4. Aviation plug. 5. Audible and visual alarm. 51. Alarm light. 52. Buzzer. 6. Encapsulated shell. 7. Circuit board. 71. Display. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] (Example 1) See Figures 1 to 4 The multifunctional intrinsically safe methane power-off device of this embodiment mainly consists of a shell 1, a fixed methane probe 2, an explosion-proof cable entry device 3, an aviation plug 4, an audible and visual alarm 5, a potted shell 6, a circuit board 7, a distributed methane probe, a carbon monoxide sensor, and a remote control.

[0015] The outer casing 1 includes a box-shaped casing 11 with an opening at the top and an upper cover 12 that is detachably fixed to the upper end of the casing 11 by a sealing ring 12-1; a transparent observation window 12-1 made of transparent glass is fixedly provided in the middle of the upper cover 12; as a preferred embodiment, the casing 11 is provided with a handle 11-1 for easy handling.

[0016] The fixed methane probe 2 is fixedly mounted on the housing 11 of the outer casing 1, similar to existing technology. The housing 11 is equipped with an explosion-proof cable entry device 3, through which a rubber-sheathed flexible cable 31 for power cord entry and exit is provided. The housing 11 also has an aviation plug 4 for signal line electrical connection and an audible and visual alarm 5, including an alarm light 51 and a buzzer 52, for triggering an audible and visual alarm when the gas concentration exceeds a set threshold. A potted housing 6 is fixedly mounted inside the housing 11 insulated from it. A circuit board 7 is encapsulated in epoxy resin within the potted housing 6. A display 71 for information display is fixedly mounted on the circuit board 7, and the display 71 is located below the transparent observation window 12-1 of the upper cover 12.

[0017] The circuit board 7 also includes a main control module for the main control of the power failure device in this embodiment, a signal processing module for receiving and processing detection information sent by each probe and sensor and sending it to the main control module, an execution module for controlling the power supply on / off of the controlled device according to the instructions of the main control module, a power supply module for providing working power, a battery bidirectionally electrically connected to the power supply module for providing backup power, an emergency on / off control module for controlling the on / off of the battery's emergency DC power output, and a wireless communication module for enabling wireless communication between the main control module and the remote controller. The signal processing module, execution module, power supply module, emergency on / off control module, wireless communication module, as well as the aforementioned display 71 and audible and visual alarm 5, are all electrically connected to the main control module. The controlled device is electrically connected to the execution module. It should be noted that the structure and working principle of each functional module on the circuit board 7 are mature existing technologies and will not be described in detail.

[0018] Unlike existing technologies that only have a single fixed methane probe 2 fixed to the outer casing, the multifunctional encapsulated intrinsically safe methane power-off device of this embodiment also includes at least one distributed methane probe. The distributed methane probes are fixedly installed on the vehicle at a position away from the fixed methane probe 2. Each distributed methane probe and the fixed methane probe 2 are electrically connected to the main control module through the signal processing module on the circuit board 7. By adding distributed methane probes, the multifunctional encapsulated intrinsically safe methane power-off device of this embodiment can detect methane concentration information at more locations of vehicles operating in coal mines. When the methane concentration detected by either the fixed methane probe 2 or any of the distributed methane probes reaches the set threshold built into the main control module, the main control module will forcibly cut off the power supply to the controlled equipment through the execution module to prevent methane combustion and explosion accidents, thereby further improving the safety of vehicle operation in coal mines.

[0019] Unlike existing technologies that only have a fixed methane probe 2 fixed to the outer casing, this embodiment of the multifunctional intrinsically safe methane power-off device also has one or more carbon monoxide sensors fixed on the vehicle it is installed in for real-time detection of carbon monoxide concentration in coal mines. Each carbon monoxide sensor is electrically connected to the main control module through a signal processing module on a circuit board 7. By adding carbon monoxide sensors, this embodiment of the multifunctional intrinsically safe methane power-off device can detect the carbon monoxide concentration information in the environment where the vehicle is operating in the coal mine. When the carbon monoxide concentration reaches the set threshold built into the main control module, the main control module also forcibly cuts off the power supply to the controlled equipment through an execution module to prevent carbon monoxide combustion and explosion accidents. This allows the multifunctional intrinsically safe methane power-off device of this embodiment to be used for multiple purposes, improves cost-effectiveness, and further enhances the safety of vehicle operation in coal mines.

[0020] The third significant difference between this embodiment and existing technologies and intrinsically safe methane power-off devices is that the multifunctional intrinsically safe methane power-off device in this embodiment is also equipped with a remote control. Accordingly, a wireless communication module that is electrically connected to the main control module and wirelessly communicates with the remote control is added to the circuit board 7, and an emergency on / off control module that controls the on / off of the emergency DC power output from the battery according to the instructions of the main control module is added to the circuit of the battery outputting emergency DC power. With this improvement, when the multifunctional encapsulated intrinsically safe methane power-off device of this embodiment cuts off the power supply of the vehicle's controlled equipment and is powered by the battery in an emergency, if it is necessary to disconnect the DC power output of the battery according to the actual situation, a power-off command is sent to the main control module via the wireless communication module through the remote control. The main control module can then disconnect the emergency power output of the battery through the emergency on / off control module according to the command (the emergency power output can also be connected via the remote control). This effectively solves the problem in the prior art that the battery emergency power output is uncontrollable and can only output continuously until the battery is depleted. At the same time, by cooperating with the remote control and the display 71, the multifunctional encapsulated intrinsically safe methane power-off device of this embodiment can also conveniently modify relevant parameters such as threshold values ​​according to actual needs during use, thereby solving the technical problem that parameter modification is very inconvenient in the prior art.

[0021] The above embodiments are descriptions of specific implementations of this utility model, and not limitations thereof. Those skilled in the art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should be included in the patent protection scope of this utility model.

Claims

1. A multifunctional potted intrinsically safe methane power-off device, comprising a housing, a fixed methane probe fixedly mounted on the housing for detecting methane concentration at the installation location, an explosion-proof cable entry device for power line entry and exit, an aviation plug for electrical connection of signal lines, an audible and visual alarm for emitting an alarm signal when the methane concentration reaches a set threshold, a potted shell insulated from the housing and fixed inside the housing, and a circuit board encapsulated in the potted shell by epoxy resin for controlling the power supply of the controlled equipment according to the detection signal, wherein the fixed methane probe and the audible and visual alarm are both electrically connected to the circuit board, characterized in that: It also includes a distributed methane probe that is fixedly installed on the vehicle at a location away from the fixed methane probe and electrically connected to the circuit board, for detecting the methane concentration at the installation location.

2. The multifunctional encapsulated intrinsically safe methane power-off device according to claim 1, characterized in that: It also includes installing one or more carbon monoxide sensors on the vehicle that are electrically connected to a circuit board and used to detect the carbon monoxide concentration in coal mines in real time.

3. The multifunctional encapsulated intrinsically safe methane power-off device according to claim 1, characterized in that: The circuit board is equipped with a main control module for running the main control, a signal processing module for receiving and processing real-time detection information and sending it to the main control module, an execution module for controlling the power supply of the controlled device according to the instructions of the main control module, a power supply module for providing working power, a battery that is bidirectionally electrically connected to the power supply module for providing backup power, and a display for displaying information. The fixed methane probe and the distributed methane probe are both electrically connected to the signal processing module. The audible and visual alarm, the display, the signal processing module, the execution module, and the power supply module are all electrically connected to the main control module, and the controlled device is electrically connected to the execution module.

4. The multifunctional encapsulated intrinsically safe methane power-off device according to claim 3, characterized in that: It also includes a remote controller, and the circuit board is further provided with a wireless communication module for realizing wireless communication between the main control module and the remote controller; and an emergency on / off control module located on the circuit for the battery to output emergency DC power, for controlling the on / off of the battery emergency DC power output according to the instructions of the main control module; both the wireless communication module and the emergency on / off control module are electrically connected to the main control module.

5. The multifunctional encapsulated intrinsically safe methane power-off device according to claim 1, characterized in that: The outer casing includes a box-shaped housing with an opening at the top and a top cover that is detachably fixed to the upper end of the housing by a sealing ring; the audible and visual alarm includes an alarm light and a buzzer fixed to the housing; the explosion-proof cable entry device and the aviation plug 4 are both fixed to the housing.

6. The multifunctional encapsulated intrinsically safe methane power-off device according to claim 5, characterized in that: A transparent observation window is fixedly provided in the middle of the top cover; the housing is provided with a handle for easy handling.

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