WO2019010907A1 - 一种提高瓦斯抽放泵运行效率的闭式循环系统 - Google Patents

一种提高瓦斯抽放泵运行效率的闭式循环系统 Download PDF

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Publication number
WO2019010907A1
WO2019010907A1 PCT/CN2017/114450 CN2017114450W WO2019010907A1 WO 2019010907 A1 WO2019010907 A1 WO 2019010907A1 CN 2017114450 W CN2017114450 W CN 2017114450W WO 2019010907 A1 WO2019010907 A1 WO 2019010907A1
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WIPO (PCT)
Prior art keywords
pump
gas drainage
solution tank
polymer drag
drag reducing
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PCT/CN2017/114450
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English (en)
French (fr)
Inventor
周福宝
张一帆
宋小林
Original Assignee
中国矿业大学
江苏信创安全技术研究院有限公司
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Application filed by 中国矿业大学, 江苏信创安全技术研究院有限公司 filed Critical 中国矿业大学
Priority to RU2019101343A priority Critical patent/RU2704377C1/ru
Priority to AU2017422764A priority patent/AU2017422764B2/en
Priority to US16/318,707 priority patent/US10613554B2/en
Publication of WO2019010907A1 publication Critical patent/WO2019010907A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/10—Dissolving using driven stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/04—Draining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/12—Fluid auxiliary
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible

Definitions

  • the invention relates to a closed circulation system for improving the operating efficiency of a gas drainage pump, and is particularly suitable for a gas drainage system of a coal mine underground moving pump station.
  • the Code for Design of Coal Mine Gas Drainage Engineering stipulates that a gas drainage system must be established in a high gas mine or a mine that mines coal and gas outburst dangerous coal seams.
  • the gas pump plays an important role in the efficient and safe production of the mine.
  • the gas drainage pump has low operating efficiency and high energy consumption, and the actual efficiency is only 10 to 40%, but it accounts for 1/4 of the total power consumption of the coal mine. This problem is extremely unsuitable for the country's requirements for coal mine energy conservation and emission reduction and China's current energy shortage.
  • the existing device can not be completely docked with the coal mine underground pumping station system, and the continuous liquid matching and ready-to-use requirements of the drag reducing agent cannot be realized, resulting in cumbersome work procedures and large human and material consumption, which is not conducive to the popularization and application of the technology.
  • the purpose of the invention is to overcome the deficiencies in the prior art and to provide a system which is simple in operation, convenient in operation, reliable in performance, water-saving, can work continuously, and can fully dissolve the drag reducing agent to improve the operating efficiency of the gas pump. Closed circulation system.
  • the inlet port of the pneumatic diaphragm pump is connected to the liquid outlet of the polymer drag reducing solution tank, and the liquid diaphragm pump outlet tube is introduced into the circulating pool.
  • the polymer drag reducing solution tank is provided with a pneumatic agitator inside, and an additive funnel is arranged at the top.
  • the outlet port of the submersible pump is respectively connected with the liquid inlet of the polymer drag reducing solution tank and the liquid inlet of the gas drainage pump through the tee, and the gas discharge pump of the submersible pump is connected to the circulating pool.
  • the pressure air duct is connected to the pneumatic diaphragm pump and the pneumatic agitator through the tee to provide power thereto.
  • the steel mesh is provided at the liquid outlet of the polymer drag reducing solution tank, and the mesh number of the steel mesh is 30-50 mesh.
  • the invention is used for improving the operating efficiency circulation system of the gas drainage pump, and is suitable for the coal mine underground gas drainage mobile pumping station system, and can realize complete docking with the underground pumping station system.
  • the invention utilizes the existing pressure air system to provide power for the full dissolution and addition of the polymer drag reducing agent; the system is connected with the pressure air pipeline and the submersible pump water supply pipeline, and the drag reducing agent can be continuously dispensed, that is, ready to use It is not necessary to stop in the middle to prepare a high-concentration drag reducing solution, which can realize continuous operation, and avoid the difficulty in controlling the concentration of drag reducing agent in the circulating pool caused by the external water of the connecting pipe, and save a lot of water source to realize closed cycle.
  • the stirring speed control of the agitator is easily realized, and the flow rate of the drag reducing solution is controlled, so that the liquid level height in the polymer drag reducing solution tank is balanced;
  • the steel wire mesh is arranged at the connection with the pipeline to prevent the undissolved drag reducing agent from entering the circulating pool and affecting the drag reducing effect;
  • the invention is small in size, does not contain electrical components, is safe and reliable in underground use, and can greatly improve gas drainage. The operating efficiency of the pump.
  • FIG. 1 is a schematic view of a closed cycle system for improving the operating efficiency of a gas drainage pump of the present invention.
  • the system is mainly composed of a pressure air pipe 1, a pneumatic diaphragm pump 13, a polymer drag reducing solution tank 9, a submersible pump 16, a gas pumping pump 21 and the like.
  • the liquid inlet of the pneumatic diaphragm pump 13 and the liquid outlet of the polymer drag reducing solution tank are connected through a connecting pipe 10, and the pneumatic diaphragm pump outlet pipe 14 is opened into the circulating water tank 15.
  • the polymer drag reducing solution tank 9 is internally provided with a pneumatic agitator 7 and an additive funnel 8 is arranged at the top.
  • the outlet pipe 17 of the submersible pump 16 is respectively connected to the liquid inlet of the polymer drag reducing solution tank and the liquid inlet of the gas drainage pump through the three-way 19, and the two outlets of the three-way are respectively provided with a regulating valve I18 and an adjustment Valve II20.
  • the gas drainage pump drain pipe 22 is connected to the circulation pool 15.
  • the pressure air pipe 1 is sequentially connected to the pipe diameter reduction 2, the transparent rubber pipe I3, the pneumatic rubber hose tee 4, and one outlet of the pneumatic rubber hose tee 4 is connected to the pneumatic agitator 7 through the transparent rubber hose II and the pressure regulating valve I.
  • the other outlet of the pneumatic hose tee 4 is connected to the pneumatic diaphragm pump 13 through a transparent hose III11 and a pressure regulating valve II12.
  • the regulating valve I18 is opened to allow a part of the water in the submersible pump discharge pipe 17 to flow into the polymer drag reducing solution tank 9.
  • the liquid level in the polymer drag reducing solution tank 9 is balanced.
  • the material is still continuously dosed so that the concentration of the solution in the polymer drag reducing solution tank 9 is kept constant.
  • Another part of the water in the submersible pump outlet pipe 17 is supplied to the gas drainage pump 21 through the pipeline, and the submersible pump 16 also functions to remix the drag reduction solution twice.
  • the gas drainage pump discharge pipe 22 feeds the liquid discharged from the pump into the circulation pool. When the concentration of the polymer drag reducing agent in the circulating pool reaches the optimum drag reducing concentration, the feeding is stopped, and the operating efficiency of the gas pump can be greatly improved. This achieves a closed cycle of the working medium of the gas pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

一种提高瓦斯抽放泵运行效率的闭式循环系统，气动隔膜泵（13）进液口与高分子减阻溶液罐（9）的出液口相连，气动隔膜泵出液管（14）通入循环水池（15）内，高分子减阻溶液罐（9）内部设有气动搅拌器（7），顶部设有加料漏斗（8），潜水泵（16）出液口通过三通（19）分别与高分子减阻溶液罐（9）的进液口和瓦斯抽放泵（21）的进液口连接，瓦斯抽放泵排液管（22）接入循环水池（15），利用气动搅拌器（7）和气动隔膜泵（13）高速运转，使高分子减阻溶液混合均匀后被送入循环水池（15）内，同时潜水泵出液管（17）向高分子减阻溶液罐（9）供水，通过加料漏斗（8）添加高分子减阻剂，实现减阻溶液的连续配液、即配即用。该系统结构简单，操作方便，实现了减阻溶液供应的闭式循环，大幅提升了瓦斯抽放泵的运行效率。

Description

一种提高瓦斯抽放泵运行效率的闭式循环系统 技术领域
本发明涉及一种提高瓦斯抽放泵运行效率的闭式循环系统，尤其适用于煤矿井下移动泵站的瓦斯抽采系统。
背景技术
《煤矿瓦斯抽采工程设计规范》规定：高瓦斯矿井或开采有煤与瓦斯突出危险煤层的矿井必须建立瓦斯抽放系统。瓦斯抽放泵作为抽放系统的动力源，对矿井的高效、安全生产起着重要作用。然而，瓦斯抽放泵运行效率低、能耗高，实际效率仅为10～40％，但其占煤矿总耗电量的1/4。该问题与国家对煤矿节能减排要求及我国目前能源紧张现状极不适应。
为此，该领域工程技术人员提出了“一种高分子减阻剂提高瓦斯抽放液环真空泵效率的方法”，即向循环水池内注入高分子减阻剂，利用减阻溶液特有的链状结构，抑制瓦斯抽放泵的涡流损失，从而大幅提高泵的效率的方法。然而，矿用高分子减阻剂溶解性差、用量大，需搅拌充分后才能起到良好的减阻效果，并且需要定量定期添加。现有装置不能与煤矿井下泵站系统完全对接，且不能实现减阻剂的连续配液、即配即用的要求，导致工作程序繁琐、人力物力消耗大，不利于该技术的推广应用。
发明内容
木发明目的是克服已有技术中的不足之处，提供一种系统简单，操作方便，性能可靠，节约用水，能连续工作，并能使减阻剂充分溶解的提高瓦斯抽放泵运行效率的闭式循环系统。
技术方案：提高瓦斯抽放泵运行效率的闭式循环系统，包括气动隔膜泵、高分子减阻溶液罐、瓦斯抽放泵、潜水泵和压风管。所述的气动隔膜泵进液口与高分子减阻溶液罐的出液口相连，气动隔膜泵出液管通入循环水池内。所述的高分子减阻溶液罐内部设有气动搅拌器，顶部设有加料漏斗。所述潜水泵出液口通过三通分别与高分子减阻溶液罐进液口和瓦斯抽放泵进液口连接，瓦斯抽放泵排液管接入循环水池。所述压风管通过三通分别连接气动隔膜泵和气动搅拌器，为其提供动力。
所述的高分子减阻溶液罐出液口处设有钢丝网，钢丝网网孔目数为30～50目。
本发明用于提高瓦斯抽放泵运行效率循环系统，适用于煤矿井下瓦斯抽放移动泵站系统，可实现与井下泵站系统的完全对接。本发明利用已有的压风系统，为高分子减阻剂的充分溶解和添加提供动力；系统与压风管路和潜水泵供水管路相连，减阻剂可连续配液、即配即用，不需中途停顿配制高浓度减阻溶液，能实现连续作业，同时可避免因接井下水管外界水所导致的循环水池内减阻剂浓度不易控制的难点，并节约大量水源，实现闭式循环；通过调压阀和调节阀，简便地实现了搅拌器的搅拌速度控制，以及注入减阻溶液流量的控制，使高分子减阻溶液罐内液位高度得到平衡；通过高分子减阻溶液罐与管路连接处设有钢丝网，可以阻止未溶解的减阻剂进入循环水池内，影响减阻效果；本发明体积小，不含电器元件，在井下使用安全可靠，并可大幅提高瓦斯抽放泵的运行效率。
附图说明
图1是本发明的提高瓦斯抽放泵运行效率的闭式循环系统示意图。
图中：1、压风管；2、管路变径；3、透明胶管I；4、气动胶管三通；5、透明胶管II；6、调压阀I；7、气动搅拌器；8、加料漏斗；9、高分子减阻溶液罐；10、连接管；11、透明胶管III；12、调压阀II；13、气动隔膜泵；14、气动隔膜泵出液管；15、循环水池；16、潜水泵；17、潜水泵出液管；18、调节阀I；19、三通；20、调节阀II；21、瓦斯抽放泵；22、瓦斯抽放泵排液管。
具体实施方式
下面结合附图和实施例，对本发明作进一步的说明。
附图所示，该系统主要由压风管1，气动隔膜泵13，高分子减阻溶液罐9，潜水泵16，瓦斯抽放泵21等组成。所述的气动隔膜泵13的进液口与高分子减阻溶液罐的出液口通过连接管10相连，气动隔膜泵出液管14通入循环水池15内。所述的高分子减阻溶液罐9内部设有气动搅拌器7，顶部设有加料漏斗8。所述潜水泵16的出液管17通过三通19分别与高分子减阻溶液罐进液口和瓦斯抽放泵进液口连接，该三通的两个出口分别设有调节阀I18和调节阀II20。瓦斯抽放泵排液管22接入循环水池15。所述压风管1依次连接管路变径2，透明胶管I3，气动胶管三通4，气动胶管三通4的一个出口通过透明胶管II、调压阀I连接气动搅拌器7。气动胶管三通4的另一个出口通过透明胶管III11、调压阀II12连接气动隔膜泵13。
工作原理：关闭调压阀II12，打开调压阀I6，压风管1中的高压空气带动气动搅拌器7高速旋转，同时，通过加料漏斗8向高分子减阻溶液罐9中添加高分子减阻剂。待减阻剂充分溶解后，打开调压阀II12，使压风管1中的部分高压空气带动气动隔膜泵13运转，使溶解的高分子减阻溶液通过连接管10、气动隔膜泵出液管14排向循环水池15内，与此同时，打开调节阀I18，使潜水泵出液管17中的部分水流向高分子减阻溶液罐9中。通过调节调压阀II12和调节阀I18的相对开度，使高分子减阻溶液罐9中的液位保持平衡。在此过程中，仍然不断定量地加料，使高分子减阻溶液罐9中的溶液浓度保持恒定。潜水泵出液管17中的另一部分水则通过管路供给瓦斯抽放泵21，潜水泵16也起到了对减阻溶液二次搅拌混匀的作用。瓦斯抽放泵排液管22将从泵中排出的液体送入循环水池内。当循环水池内的高分子减阻剂浓度达到最佳减阻浓度时，停止加料，此时可实现瓦斯抽放泵运行效率的大幅提高。这样就实现了瓦斯抽放泵工作介质的闭式循环。

Claims (2)

  1. 一种提高瓦斯抽放泵运行效率的闭式循环系统，包括气动隔膜泵、高分子减阻溶液罐、瓦斯抽放泵、潜水泵和压风管；其特征是：所述的气动隔膜泵进液口与高分子减阻溶液罐的出液口相连，气动隔膜泵出液管通入循环水池内；所述的高分子减阻溶液罐内部设有气动搅拌器，顶部设有加料漏斗；所述潜水泵出液口通过三通分别与高分子减阻溶液罐进液口和瓦斯抽放泵进液口连接，瓦斯抽放泵排液管接入循环水池；所述压风管通过三通分别连接气动隔膜泵和气动搅拌器。
  2. 根据权利要求1所述的提高瓦斯抽放泵运行效率的闭式循环系统，其特征是：所述的高分子减阻溶液罐出液口处设有钢丝网，钢丝网网孔目数为30～50目。
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