Energy-saving gas pump set combined transportation system used under complex gas extraction working conditions and control method

A gas drainage and energy-saving technology, which is applied in the direction of gas discharge, separation methods, chemical instruments and methods, etc., can solve the problems affecting the stable operation of the pump, interruption of liquid supply, frequent sewage discharge, etc., so as to prolong the trouble-free operation period, Effect of increasing gas drainage flow rate and improving operation stability

CN112354264AActive Publication Date: 2021-02-12CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-02-12

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Abstract

The invention discloses an energy-saving type gas pump set combined transportation system used under complex gas extraction working conditions and a control method. During gas extraction, gas containing a large amount of pulverized coal enters the gas extraction pump set, a working solution pulverized coal mixture is discharged to the inclined plate type water bath cooling box through the gas-liquid separator to be subjected to pulverized coal forced precipitation and primary cooling, and then enters the gas extraction pump set again through the mining thick slurry pump, the secondary coolingdevice and the high-level filter tank, the liquid level and viscosity of the working liquid are subjected to interlock control, so that intelligent preparation and liquid supplementation of the working liquid and self-adaptive adjustment of the optimal energy-saving viscosity are realized, intelligent pollution discharge and purification of the working solution are realized by performing interlockcontrol on the pulverized coal concentration and the coal slime height of the working solution, the gas extraction pump station can achieve efficient, energy-saving, safe and reliable operation of the gas pump under severe extraction conditions, is high in intelligent level, and is particularly suitable for large (extra-large) ground gas extraction pump stations with large pulverized coal contentand poor extraction working conditions such as coal seam drilling or working face upper corners of coal mines in China.
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Description

technical field

[0001] The invention relates to the technical field of coal mine gas drainage, in particular to an energy-saving gas pump group intermodal transport system and control method for complex gas drainage conditions, and is especially suitable for coal-bearing drilling such as coal seam drilling or upper corners of working faces. Gas extraction points with many powder impurities and harsh working conditions. Background technique

[0002] Gas drainage pumps are widely used in coal mine gas drainage systems. They have outstanding advantages such as simple structure, safety and reliability, but they are also recognized by the industry as low-efficiency and high-energy-consuming equipment. The high consumption and low efficiency of gas pumps have become a major technical bottleneck restricting the development of low-carbon, green and efficient mines in my country. For this reason, according to the gas-liquid two-phase flow characteristics and energy loss mechanism in...

Examples

Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, an energy-saving gas pump unit intermodal system for complex gas drainage conditions, including a gas drainage pump unit operation system, a working fluid circulation and cooling system, an integrated system for drag reduction and working fluid distribution, and an internal pump Adaptive constant viscosity system, working fluid intelligent purification system and pump group PLC monitoring substation.

[0038] The gas drainage pump operation system includes 2 to 20 gas drainage pumps 1 combined, and each gas drainage pump 1 is sequentially installed with an air intake control valve 6 on the air intake pipeline 3 and a gas comprehensive parameter tester 5, each gas extraction pump 1 is connected to a gas-liquid separator 2, and the top exhaust port of the gas-liquid separator 2 is connected to an exhau...