CN211980003U - Coal mine gas extraction pipeline leakage simulation system - Google Patents
Coal mine gas extraction pipeline leakage simulation system Download PDFInfo
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- CN211980003U CN211980003U CN202021004385.6U CN202021004385U CN211980003U CN 211980003 U CN211980003 U CN 211980003U CN 202021004385 U CN202021004385 U CN 202021004385U CN 211980003 U CN211980003 U CN 211980003U
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- 239000003245 coal Substances 0.000 title claims abstract description 84
- 238000004088 simulation Methods 0.000 title claims description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000009423 ventilation Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
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- 238000004891 communication Methods 0.000 claims description 3
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- 238000003915 air pollution Methods 0.000 description 1
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Abstract
The utility model provides a colliery gas drainage pipeline leakage analog system, include: the coal mine tunnel model is of a tubular structure, one end of the coal mine tunnel model is provided with a first sealing flange, the other end of the coal mine tunnel model is provided with a second sealing flange, the first sealing flange is provided with an air inlet, and the second sealing flange is provided with an air outlet; the gas extraction pipeline model is of a tubular structure and is arranged in the coal mine roadway model, one end of the gas extraction pipeline model is connected with the gas supply device, and the other end of the gas extraction pipeline model is connected with the fan; the regulating valve is arranged in the gas extraction pipeline model and used for simulating a gas leakage condition; and the sensor is arranged in the gas extraction pipeline model and is used for detecting various parameters under the condition of simulating gas leakage. The pressure and the concentration change condition of the gas in the simulated gas leakage condition are effectively monitored, and the data can be used for carrying out equipment control aiming at the actual leakage condition.
Description
Technical Field
The utility model belongs to the technical field of the coal mine safety, especially, relate to a colliery gas drainage pipeline leaks analog system.
Background
In recent years, with the rapid development of coal mining technology, coal mine production is more efficient. Due to the increase of the coal mining depth and the improvement of the coal mining intensity, the gas emission quantity of a mine is increased sharply compared with the gas emission quantity of a traditional coal mine, so that the danger of coal and gas outburst is increased continuously, an important measure for preventing the gas outburst in a mine area is to extract gas from a coal layer containing the gas, and the method can not only realize the control of gas disasters, but also utilize the extracted gas as clean energy. However, the gas extraction pipeline is inevitably easy to age and corrode or is subjected to external impact, and the leakage phenomenon of the coal mine gas extraction pipeline occurs sometimes. When leakage occurs, external air is sucked into the pipeline due to the negative pressure effect inside the extraction pipeline, so that the concentration of gas in the pipeline is reduced. Therefore, the gas extraction efficiency can be reduced, the energy consumption of an extraction system can be increased, and if the gas near the leakage port reaches the explosive concentration range, the consequences are very serious once an explosion accident occurs.
Therefore, various conditions of coal mine gas extraction pipeline leakage need to be integrated, corresponding various parameters are obtained, and a corresponding model is established. The model can provide operation guidance of various devices under the condition that the coal mine gas extraction pipeline leaks in the later period, and can reduce the risk of coal mine gas explosion.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a colliery gas drainage pipeline leakage analog system to realize the purpose of the various parameter models of comprehensive simulation colliery gas drainage pipeline leakage analog state.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a coal mine gas extraction pipeline leakage simulation system comprises:
the coal mine tunnel model is of a tubular structure, one end of the coal mine tunnel model is provided with a first sealing flange, the other end of the coal mine tunnel model is provided with a second sealing flange, the first sealing flange is provided with an air inlet, and the second sealing flange is provided with an air outlet;
the gas extraction pipeline model is of a tubular structure and is arranged in the coal mine roadway model, one end of the gas extraction pipeline model is connected with the gas supply device, and the other end of the gas extraction pipeline model is connected with the fan;
the regulating valve is arranged in the gas extraction pipeline model and used for simulating a gas leakage condition;
and the sensor is arranged in the gas extraction pipeline model and is used for detecting various parameters under the condition of simulating gas leakage.
Furthermore, the air inlet is connected with an air inlet pipeline of the ventilation system, and the air outlet is connected with an air outlet pipeline of the ventilation system.
Further, the system further comprises: and the adjusting valve is respectively connected with the gas extraction pipeline model and the gas supply device.
Further, the system further comprises: and the gas flowmeter is respectively connected with the gas supply device and the regulating valve.
Further, the system further comprises: and the gas tail gas treatment device is connected with the fan.
Further, the regulating valve is a needle valve, and the needle valve includes: the needle valve comprises a needle valve body, an inlet, an outlet and a bending section, wherein the inlet is connected with the outlet through the bending section, and a valve clack of the needle valve body is movably arranged in the bending section.
Furthermore, the gas extraction pipeline model is provided with at least two communicating holes matched with the needle valves, and the communicating holes are provided with movably arranged plugs.
Further, the sensor includes: the methane sensor and the pressure sensor are arranged at intervals.
Further, the coal mine tunnel model comprises: and an included angle is formed between the at least two sections of tubular structures, and correspondingly, the gas extraction pipeline model and the coal mine roadway model are correspondingly arranged.
Furthermore, the coal mine gas extraction pipeline leakage simulation system further comprises: and the synchronous controller is respectively and electrically connected with the ventilation system, the regulating valve, the fan and the regulating valve and is used for synchronously controlling the ventilation system, the regulating valve, the fan and the regulating valve.
The coal mine gas extraction pipeline leakage simulation system provided by the embodiment of the utility model simulates a coal mine tunnel model through a tubular structure, and sets the gas extraction pipeline model in the coal mine tunnel model, the two sides of the gas extraction pipeline model are respectively connected with a gas supply device and a fan, the actual operation condition of the coal mine gas extraction pipeline can be simulated, the gas leakage condition can be simulated by the regulating valve arranged on the gas extraction pipeline model, the various conditions of the gas extraction pipeline can be conveniently simulated through the structure, the pressure in the gas extraction pipeline and the concentration change condition of the gas in the simulated gas leakage condition can be effectively monitored by the arranged various sensors, the corresponding leakage digital model can be established by the data, and the model can be utilized to carry out equipment control guidance aiming at the actual leakage condition, and the risk of coal mine gas explosion is reduced.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of a coal mine gas extraction pipeline leakage simulation system according to an embodiment of the present invention;
fig. 2 is a schematic side view of a coal mine gas extraction pipeline leakage simulation system according to an embodiment of the present invention;
fig. 3 is the embodiment of the utility model provides a coal mine gas drainage pipeline leak simulation system in needle type valve's connection structure's schematic diagram.
Description of reference numerals:
1-coal mine tunnel model; 2-gas extraction pipeline model; 3-a first sealing flange; 4-a second sealing flange; 5-air inlet; 6-air outlet; 7-a leak port; 8-a gas supply device; 9-adjusting the valve; 10-a gas flow meter; 11-a scaffold; 12-a fan; 13-a gas tail gas treatment device; 14-a synchronous controller; 15-a sensor; 17-a valve flap; 18-an outlet; 19-inlet.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic structural diagram of a coal mine gas extraction pipeline leakage simulation system according to an embodiment of the present invention; fig. 2 is the embodiment of the utility model provides a coal mine gas drainage pipeline leak simulation system look sideways at the schematic diagram. Referring to fig. 1 and 2, the coal mine gas extraction pipeline leakage simulation system may include:
the coal mine tunnel model is of a tubular structure, one end of the coal mine tunnel model is provided with a first sealing flange, the other end of the coal mine tunnel model is provided with a second sealing flange, the first sealing flange is provided with an air inlet, and the second sealing flange is provided with an air outlet;
the gas extraction pipeline model is of a tubular structure and is arranged in the coal mine roadway model, one end of the gas extraction pipeline model is connected with the gas supply device, and the other end of the gas extraction pipeline model is connected with the fan;
the regulating valve is arranged in the gas extraction pipeline model and used for simulating a gas leakage condition;
and the sensor is arranged in the gas extraction pipeline model and is used for detecting various parameters under the condition of simulating gas leakage.
The coal mine underground gas extraction pipe network is an underground pipe network part of a coal mine gas extraction system and mainly plays two roles: connecting an extraction pump with the underground extraction drill hole, and transmitting extraction negative pressure formed by the operation of the ground gas extraction pump into the extraction drill holes of all underground extraction areas; and secondly, the extracted coal bed gas is centralized and conveyed to the ground for emptying or utilization. An underground gas extraction pipe network is an important link for coal mine gas treatment, exploitation and utilization. However, leakage from the gas production pipe often occurs due to inevitable aging, corrosion, and other natural and artificial damages. When leakage occurs, external air is sucked into the pipeline by negative pressure, so that the concentration of gas in the pipeline is reduced. On one hand, the potential safety hazard of gas transmission is caused, and if the gas concentration of the pipeline is in an explosion range, once an accident occurs, the consequences brought to a mine are very serious; on the other hand, the gas concentration in the pipeline is greatly reduced, and the gas cannot be directly utilized or the utilization cost is increased.
Thus, in this embodiment, different coal mine tunnel models can be simulated using the pipeline. For example, a round or rectangular pipe may be used to simulate a real coal mine roadway. And moreover, pipelines with corresponding proportions can be selected as a gas extraction pipeline model according to actual conditions so as to simulate the corresponding relation between a coal mine roadway and the gas extraction pipeline model as much as possible. The gas extraction pipeline is supported by the pipeline support.
Correspondingly, sealing flanges are respectively arranged on two sides of the coal mine tunnel model. And the sealing flanges at the two sides are respectively provided with an air inlet and an air outlet so as to simulate the real ventilation condition of a coal mine roadway as far as possible.
One end of the gas extraction pipeline model is connected with a gas supply device, and the other end of the gas extraction pipeline model is connected with a fan; the method is used for simulating the real situation of gas extraction in the actual operation process.
Accordingly, in the gas extraction pipe model, for simulating a gas leakage situation, the regulating valve can be opened or closed, and the leakage amount can be adjusted according to the simulation situation. In addition, a sensor is arranged in the gas extraction pipeline model and used for detecting various parameters under the condition of simulating gas leakage. In the simulation process, leakage amount is adjusted, various parameters in the process are obtained through a sensor, a corresponding mathematical model is established by using the parameters, and then the model is used for carrying out equipment control guidance according to the actual leakage condition, so that the risk of coal mine gas explosion is reduced.
Optionally, the sensor includes: the methane sensor and the pressure sensor are arranged at intervals. The methane sensor can detect the change of the gas content in the leaked coal mine gas extraction pipeline model, and the pressure sensor is used for detecting the change of the gas pressure in the leaked coal mine gas extraction pipeline model. The methane sensors and the pressure sensors are arranged at intervals, so that the measurement error caused by close arrangement can be reduced, and meanwhile, the gas content and the gas pressure at different positions in the gas extraction pipeline model can be detected, so that more comprehensive data of other pressure and gas content changes of all parts in the pipe can be obtained when the gas leakage of the coal mine gas extraction pipeline model is simulated. Further, the sensor may further include: the image acquisition device can monitor the gas pressure and the concentration distribution in the gas extraction pipeline model in real time through the sensor and the image acquisition device in the experiment process.
Further, the coal mine tunnel model includes: and an included angle is formed between the at least two sections of tubular structures, and correspondingly, the gas extraction pipeline model and the coal mine roadway model are correspondingly arranged. Can be with coal mine tunnel model and gas extraction pipeline model divide into the multistage, have certain angle between every section connection back to realize the purpose of complete simulation actual coal mine tunnel model and gas extraction pipeline model.
Furthermore, the air inlet is connected with an air inlet pipeline of the ventilation system, and the air outlet is connected with an air outlet pipeline of the ventilation system. And simulating the air flowing condition in the actual coal mine tunnel by using the ventilation pipeline.
Correspondingly, the system further comprises: and the adjusting valve is respectively connected with the gas extraction pipeline model and the gas supply device. In this embodiment, the gas supply device may be a gas cylinder, and correspondingly, a regulating valve is provided, and the regulating valve may be used to control the gas content in the gas extraction pipeline model. Optionally, the system further includes: and the gas flowmeter is respectively connected with the gas supply device and the regulating valve. The gas flowmeter can be used for conveniently controlling the supply of the gas.
The system further comprises: and the gas tail gas treatment device is connected with the fan. The main component of the gas is methane, which can generate air pollution when directly discharged into the air, and the gas has flammable properties. Therefore, in this embodiment, the system is further provided with a gas tail gas treatment device, and for example, a combustion system may be adopted to treat the gas tail gas.
In a preferred embodiment of this embodiment, the regulating valve is a needle valve, and the needle valve includes: the needle valve comprises a needle valve body, an inlet, an outlet and a bending section, wherein the inlet is connected with the outlet through the bending section, and a valve clack of the needle valve body is movably arranged in the bending section.
A needle valve is a valve that can be precisely adjusted. The needle valve can bear higher pressure and has better sealing performance than other valves, so the needle valve is generally used for sealing gas or liquid medium with smaller flow and higher pressure. The method is particularly suitable for simulating a gas leakage scene. Fig. 3 is the embodiment of the utility model provides a coal mine gas drainage pipeline leak simulation system in needle type valve's connection structure's schematic diagram. Referring to fig. 3, the regulating valve is a needle valve including: the needle valve comprises a needle valve body, an inlet, an outlet and a bending section, wherein the inlet is connected with the outlet through the bending section, and a valve clack of the needle valve body is movably arranged in the bending section. Through the position of adjustment valve clack, can realize the control to the flow, and then can simulate the gas leakage condition of different degrees.
Optionally, the gas extraction pipeline model is provided with at least two communicating holes matched with the needle valves, and the communicating holes are provided with movably arranged plugs. In this embodiment, the gas extraction pipeline model may be provided with two communicating holes that are matched with the needle valve to simulate the gas leakage at different positions, the needle valve may be provided with a hose connected to an inlet, the hose and the communicating holes are used to realize sealing connection, and an unused sealing port is blocked to be sealed. By adopting the mode, the condition of gas leakage at different positions on the gas extraction pipeline model can be flexibly simulated.
In a preferred implementation manner of the embodiment, the coal mine gas extraction pipeline leakage simulation system further includes: and the synchronous controller is respectively and electrically connected with the ventilation system, the regulating valve, the fan and the regulating valve and is used for synchronously controlling the ventilation system, the regulating valve, the fan and the regulating valve. Can be connected with other devices and operated by communication technology such as a field bus. Accurate synchronous operation of all parts in the system is achieved, manual time delay is avoided, and then a more accurate gas leakage simulation effect can be obtained.
The coal mine gas extraction pipeline leakage simulation system provided by the embodiment of the utility model simulates a coal mine tunnel model through a tubular structure, and sets the gas extraction pipeline model in the coal mine tunnel model, the two sides of the gas extraction pipeline model are respectively connected with a gas supply device and a fan, the actual operation condition of the coal mine gas extraction pipeline can be simulated, the gas leakage condition can be simulated by the regulating valve arranged on the gas extraction pipeline model, the various conditions of the gas extraction pipeline can be conveniently simulated through the structure, the pressure in the gas extraction pipeline and the concentration change condition of the gas in the simulated gas leakage condition can be effectively monitored by the arranged various sensors, the corresponding leakage digital model can be established by the data, and the model can be utilized to carry out equipment control guidance aiming at the actual leakage condition, and the risk of coal mine gas explosion is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a coal mine gas drainage pipeline leaks analog system which characterized in that, coal mine gas drainage pipeline leaks analog system, includes:
the coal mine tunnel model is of a tubular structure, one end of the coal mine tunnel model is provided with a first sealing flange, the other end of the coal mine tunnel model is provided with a second sealing flange, the first sealing flange is provided with an air inlet, and the second sealing flange is provided with an air outlet;
the gas extraction pipeline model is of a tubular structure and is arranged in the coal mine roadway model, one end of the gas extraction pipeline model is connected with the gas supply device, and the other end of the gas extraction pipeline model is connected with the fan;
the regulating valve is arranged in the gas extraction pipeline model and used for simulating a gas leakage condition;
and the sensor is arranged in the gas extraction pipeline model and is used for detecting various parameters under the condition of simulating gas leakage.
2. The coal mine gas extraction pipeline leakage simulation system according to claim 1, wherein the air inlet is connected with an air inlet pipeline of a ventilation system, and the air outlet is connected with an air outlet pipeline of the ventilation system.
3. The coal mine gas extraction pipeline leakage simulation system of claim 1, further comprising: and the adjusting valve is respectively connected with the gas extraction pipeline model and the gas supply device.
4. The coal mine gas extraction pipeline leakage simulation system of claim 3, further comprising: and the gas flowmeter is respectively connected with the gas supply device and the regulating valve.
5. The coal mine gas extraction pipeline leakage simulation system of claim 1, further comprising: and the gas tail gas treatment device is connected with the fan.
6. The coal mine gas extraction pipeline leakage simulation system of claim 1, wherein the regulating valve is a needle valve, and the needle valve comprises: the needle valve comprises a needle valve body, an inlet, an outlet and a bending section, wherein the inlet is connected with the outlet through the bending section, and a valve clack of the needle valve body is movably arranged in the bending section.
7. The coal mine gas extraction pipeline leakage simulation system according to claim 6, wherein a communication hole matched with the needle valve is formed in the gas extraction pipeline model, and a plug is movably arranged on the communication hole.
8. The coal mine gas extraction pipeline leakage simulation system of claim 1, wherein the sensor comprises: the methane sensor and the pressure sensor are arranged at intervals.
9. The coal mine gas extraction pipeline leakage simulation system of claim 1, wherein the coal mine roadway model comprises: and an included angle is formed between the at least two sections of tubular structures, and correspondingly, the gas extraction pipeline model and the coal mine roadway model are correspondingly arranged.
10. The coal mine gas extraction pipeline leakage simulation system of claim 1, further comprising: and the synchronous controller is respectively and electrically connected with the ventilation system, the regulating valve, the fan and the regulating valve and is used for synchronously controlling the ventilation system, the regulating valve, the fan and the regulating valve.
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| CN202021004385.6U CN211980003U (en) | 2020-06-04 | 2020-06-04 | Coal mine gas extraction pipeline leakage simulation system |
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| CN202021004385.6U CN211980003U (en) | 2020-06-04 | 2020-06-04 | Coal mine gas extraction pipeline leakage simulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250736A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN113550783A (en) * | 2021-08-30 | 2021-10-26 | 安徽理工大学 | Intelligent coal mine underground gas extraction device |
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2020
- 2020-06-04 CN CN202021004385.6U patent/CN211980003U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113250736A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN113250736B (en) * | 2021-05-24 | 2024-02-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN113550783A (en) * | 2021-08-30 | 2021-10-26 | 安徽理工大学 | Intelligent coal mine underground gas extraction device |
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