阅读说明：本技术 一种回风巷瓦斯排放监测方法 (Return airway gas emission monitoring method ) 是由 隆清明 刘见中 陈德敏 苏莉 张志刚 邱飞 常宇 兰祥云 张卫东 刘娟 周燕 于 2021-08-23 设计创作，主要内容包括：本发明涉及一种回风巷瓦斯排放监测方法,包括以下步骤：S1：在回风巷道内安装两个相互交叉的拱形轨道；S2：在所述的两个拱形轨道上安装一对风速传感器,并分别安装一个甲烷浓度传感器和一个多参数传感器；S3：通过两个风速传感器实时监测风速,并计算平均风速；S4：通过两个轨道上的一对甲烷浓度传感器和一对多参数传感器监测回风巷内的甲烷浓度、一氧化碳浓度、二氧化碳浓度；S5：通过回风巷瓦斯排放监测仪接收平均风速、甲烷浓度、一氧化碳浓度、二氧化碳浓度；S6：回风巷瓦斯排放监测仪根据接收到的数据计算回风巷实时瓦斯排放量、一氧化碳排放量、二氧化碳排放量、累计排放量。(The invention relates to a method for monitoring gas emission of a return airway, which comprises the following steps: s1: two mutually crossed arched rails are arranged in the return air roadway; s2: a pair of wind speed sensors are arranged on the two arched tracks, and a methane concentration sensor and a multi-parameter sensor are respectively arranged on the two arched tracks; s3: monitoring wind speed in real time through two wind speed sensors, and calculating average wind speed; s4: monitoring the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration in the return airway through a pair of methane concentration sensors and a pair of multi-parameter sensors on the two tracks; s5: receiving the average wind speed, the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration through a return airway gas emission monitor; s6: and calculating the real-time gas emission amount, the carbon monoxide emission amount, the carbon dioxide emission amount and the accumulated emission amount of the return airway according to the received data by the return airway gas emission monitor.)

1. A method for monitoring gas emission of a return airway is characterized by comprising the following steps: the method comprises the following steps:

s1: two mutually crossed arched rails are arranged in the return air roadway;

s2: a pair of wind speed sensors are arranged on the two arched tracks, and a methane concentration sensor and a multi-parameter sensor are respectively arranged on the two arched tracks;

s3: monitoring wind speed in real time through two wind speed sensors, and calculating average wind speed;

s4: monitoring the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration in the return airway through a pair of methane concentration sensors and a pair of multi-parameter sensors on the two tracks;

s5: receiving the average wind speed, the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration through a return airway gas emission monitor;

s6: and calculating the real-time gas emission amount, the carbon monoxide emission amount, the carbon dioxide emission amount and the accumulated emission amount of the return airway according to the received data by the return airway gas emission monitor.

2. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: the two arched tracks and the cross section of the return air roadway are arranged at an included angle of 45 degrees.

3. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: the wind speed sensor is an ultrasonic correlation type wind speed sensor.

4. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: real-time gas discharge Q of return airway_CH4＝V is multiplied by S multiplied by A, wherein V represents average wind speed, S represents return air lane section area, and A represents methane concentration.

5. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: real-time carbon monoxide emission Q of return airway_COWhere V denotes the average wind speed, S denotes the area of the return portion, and B denotes the carbon monoxide concentration.

6. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: real-time carbon dioxide emission Q of return airway_CO2Where V denotes the average wind speed, S denotes the area of the return portion, and C denotes the carbon dioxide concentration.

7. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: the multi-parameter sensor is integrated with a carbon monoxide concentration sensor, a carbon dioxide concentration sensor and a temperature sensor.

8. The method for monitoring the gas emission from a return airway as claimed in claim 1, wherein: further comprising step S7: the return airway gas emission detector periodically sends the average wind speed, the methane concentration, the carbon monoxide concentration, the carbon dioxide concentration, the real-time gas emission, the carbon monoxide emission, the carbon dioxide emission and the accumulated emission to the handheld device through a wireless network, and irregularly sends the abnormal conditions of the gas emission with the concentration exceeding the limit and the temperature exceeding the limit to the handheld device.

Technical Field

The invention belongs to the technical field of coal mining safety, and relates to a method for monitoring gas emission of a return airway.

Background

Climate change due to greenhouse gas emissions is a common challenge for all humans. Coal mine gas is a strong greenhouse effect gas, and the greenhouse effect of methane in the coal mine gas is 21 times that of carbon dioxide. Due to the fact that the concentration of ventilation air methane in the air return roadway is low, the difficulty in utilization of incineration, power generation and the like of the part of methane is high, and the utilization value is low. Therefore, most coal mines emit ventilation air directly into the atmosphere.

The accurate metering of return airway gas and other greenhouse gas emissions is the foundation and core of enhanced emissions management. At present, the concentration of the gas in the return airway of the coal mine is mainly detected by monitoring the gas in the return airway of the coal mine, the aim of the monitoring is mainly to serve mine ventilation and coal mine safety, the monitoring on the gas discharge amount in the return airway is less, and necessary monitoring means and methods are also lacked. On the other hand, the monitoring of the carbon dioxide and carbon monoxide emission of the return airway is basically in a blank state. Therefore, the search for a simple, efficient and accurate method for measuring the emission quantity of the coal mine return airway gas and other greenhouse gases is not slow enough.

Under this background, realize colliery return airway gas and other greenhouse gas and discharge accurate measurement, will greatly promote ventilation air methane and discharge the management, to reducing greenhouse gas and discharging, realize economic high quality development and have the significance.

Disclosure of Invention

In view of the above, the present invention provides a method for monitoring gas emission in a return airway, which implements accurate measurement of gas, carbon monoxide and carbon dioxide emissions in the return airway by arranging an arched cross rail and a measurement sensor in the return airway, and provides a technical support for coal mine carbon emission measurement.

In order to achieve the purpose, the invention provides the following technical scheme:

a method for monitoring gas emission of a return airway comprises the following steps:

s1: two mutually crossed arched rails are arranged in the return air roadway;

s2: a pair of wind speed sensors are arranged on the two arched tracks, and a methane concentration sensor and a multi-parameter sensor are respectively arranged on the two arched tracks;

s3: monitoring wind speed in real time through two wind speed sensors, and calculating average wind speed;

s4: monitoring the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration in the return airway through a pair of methane concentration sensors and a pair of multi-parameter sensors on the two tracks;

s5: receiving the average wind speed, the methane concentration, the carbon monoxide concentration and the carbon dioxide concentration through a return airway gas emission monitor;

s6: and calculating the real-time gas emission amount, the carbon monoxide emission amount, the carbon dioxide emission amount and the accumulated emission amount of the return airway according to the received data by the return airway gas emission monitor.

Furthermore, the two arched rails and the cross section of the return air roadway are arranged at an included angle of 45 degrees.

Further, the wind speed sensor is an ultrasonic correlation type wind speed sensor.

Furthermore, the real-time gas discharge Q of the return airway_CH4＝V is multiplied by S multiplied by A, wherein V represents average wind speed, S represents return air lane section area, and A represents methane concentration.

Furthermore, the real-time carbon monoxide emission Q of the return airway_COWhere V denotes the average wind speed, S denotes the area of the return portion, and B denotes the carbon monoxide concentration.

Furthermore, the real-time carbon dioxide emission Q of the return airway_CO2Where V denotes the average wind speed, S denotes the area of the return portion, and C denotes the carbon dioxide concentration.

Further, the multi-parameter sensor is integrated with a carbon monoxide concentration sensor, a carbon dioxide concentration sensor and a temperature sensor.

Further, the method also includes step S7: the return airway gas emission detector periodically sends the average wind speed, the methane concentration, the carbon monoxide concentration, the carbon dioxide concentration, the real-time gas emission, the carbon monoxide emission, the carbon dioxide emission and the accumulated emission to the handheld device through a wireless network, and irregularly sends the abnormal conditions of the gas emission with the concentration exceeding the limit and the temperature exceeding the limit to the handheld device.

The invention has the beneficial effects that: the invention provides a method for monitoring gas emission of a return airway, which realizes accurate measurement of gas, carbon monoxide and carbon dioxide emission of the return airway in a mode of accurately measuring the wind speed and the methane concentration in the return airway and provides technical support for coal mine carbon emission measurement.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram illustrating the general principle of a method for monitoring the gas emission of a return airway according to the present invention;

reference numerals: the system comprises an air return roadway 1, a track 2, a multi-parameter sensor 3, a methane concentration sensor 4, an air speed sensor 5, an air return roadway gas emission monitor 6 and a mobile phone 7.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.

Please refer to fig. 1, which is a schematic diagram of the general principle of the method for monitoring the gas emission in the return airway. The method comprises an arched cross track 2 arranged in a return air tunnel 1, a wind speed sensor 5, a methane concentration sensor 4, a multi-parameter sensor 3 and a return air tunnel gas emission monitor 6. The wind speed sensor is an ultrasonic correlation type wind speed sensor.

The two arched crossed rails form an included angle of 45 degrees with the cross section of the return air roadway.

The 2 groups of ultrasonic correlation type wind speed sensors are respectively arranged on two arched crossed rails and can move on the arched rails.

And the real-time gas discharge quantity Q of the return airway is equal to the wind speed V multiplied by the area S multiplied by the methane concentration percent of the return airway section.

The wind speed is the average value of the values measured by the two groups of ultrasonic correlation type wind speed sensors.

The multi-parameter sensor 3 integrates a carbon monoxide concentration sensor, a carbon dioxide concentration sensor, a temperature sensor and the like.

Monitoring software is integrated in the return airway gas emission monitor 6, the software calculates the emission and accumulated emission of gas, carbon monoxide and carbon dioxide in the return airway in real time, and the emission measurement method of carbon monoxide and carbon dioxide is the same as the emission calculation method of gas.

Optionally, the return airway gas emission monitor 6 may push the monitoring data to the mobile phone 7, including the return airway real-time gas emission amount and the accumulated emission amount which are periodically pushed, and the abnormal conditions such as the excess concentration and the excess temperature of the discharged gas which are not regularly pushed.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.