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CN107387169A - 一种两级螺杆膨胀机级间加热结构 - Google Patents

一种两级螺杆膨胀机级间加热结构 Download PDF

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Publication number
CN107387169A
CN107387169A CN201710700526.4A CN201710700526A CN107387169A CN 107387169 A CN107387169 A CN 107387169A CN 201710700526 A CN201710700526 A CN 201710700526A CN 107387169 A CN107387169 A CN 107387169A
Authority
CN
China
Prior art keywords
level
oil duct
screw expander
level housing
heating arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710700526.4A
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English (en)
Inventor
王静
胡建军
张开闯
陈锐
许汝洪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Tin Compressor Co Ltd
Original Assignee
Wuxi Tin Compressor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Tin Compressor Co Ltd filed Critical Wuxi Tin Compressor Co Ltd
Priority to CN201710700526.4A priority Critical patent/CN107387169A/zh
Publication of CN107387169A publication Critical patent/CN107387169A/zh
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/06—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F01C11/002—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

本发明涉及螺杆膨胀机技术领域，具体为一种两级螺杆膨胀机级间加热结构，其能解决提高入口温度带来的经济性的问题，其包括一级壳体，所述一级壳体排气端安装有二级进气端轴承座，所述一级壳体内设置有气体通道，所述一级壳体的顶端开有竖向布置的主进油口，所述一级壳体内上端开有连通所述主进油口的水平油道，所述二级进气端轴承座开有与所述水平油道对应连通的第二油道，其特征在于，所述水平油道靠近所述二级进气端轴承座一侧开有连通所述气体通道的凹槽。

Description

一种两级螺杆膨胀机级间加热结构
技术领域
本发明涉及螺杆膨胀机技术领域，具体为一种两级螺杆膨胀机级间加热结构。
背景技术
在朗肯循环系统中，膨胀机是将高温高压工质蒸汽膨胀产生的动能转化为机械能的设备，是朗肯循环的关键设备之一。提高整个循环系统的效率，主要通过提高膨胀机的内效率来实现。在螺杆膨胀机主机的结构中，可以通过提高膨胀机的入口工质温度，使膨胀机的进出口温差加大，从而提高膨胀机的做功能力，实现朗肯循环系统的热功转化效率的提高。
现有的两级螺杆膨胀机结构中，一般提高膨胀机一级入口的温度。但这就意味着要提高工质在换热器中的出口温度，那么换热器中的蒸汽温度将会更高，受到材料的耐温极限的限制，温度并不能无止境的提高。所以需要膨胀机、换热器采用耐温性能更好的合金钢等材料，造价花费会快速的提升，使成本增加，经济效益不好。
发明内容
针对上述问题，本发明提供了一种两级螺杆膨胀机级间加热结构，其能解决提高入口温度带来的经济性的问题。
其技术方案是这样的：一种两级螺杆膨胀机级间加热结构，其包括一级壳体，所述一级壳体排气端安装有二级进气端轴承座，所述一级壳体内设置有气体通道，所述一级壳体的顶端开有竖向布置的主进油口，所述一级壳体内上端开有连通所述主进油口的水平油道，所述二级进气端轴承座开有与所述水平油道对应连通的第二油道，其特征在于，所述水平油道靠近所述二级进气端轴承座一侧开有连通所述气体通道的凹槽。
其进一步特征在于，所述凹槽为扇形凹槽。所述扇形凹槽的深度为0.2-0.3mm。
采用本发明的结构后，扇形凹槽的设置连通了水平油道和气体通道，润滑油经过时由于压差存在将喷进气体通道，与气体一起进入二级主机，然后参与膨胀与排出过程，增加了气体温度，不会超过膨胀机一级入口的温度，也不会给壳体的材料带来额外的经济负担，且在一级壳体的内部，直接和二级进气端轴承座连接而成，不影响机组的外观以及装配的可行性，结构简单，成本低，有效解决了提高入口温度带来的经济性的问题。
附图说明
图1为本发明结构主视向剖视示意图；
图2为本发明一级壳体左视结构示意图；
图3为本发明二级进气端轴承座左视结构示意图；
图4为扇形凹槽处结构处放大示意图。
具体实施方式
见图1，图2，图3，图4所示，一种两级螺杆膨胀机级间加热结构，其包括一级壳体1，一级壳体1排气端安装有二级进气端轴承座2，一级壳体1内设置有气体通道7，一级壳体1的顶端开有竖向布置的主进油口3，一级壳体1内上端开有连通主进油口3的水平油道4，二级进气端轴承座2开有与水平油道4对应连通的第二油道6，水平油道4靠近二级进气端轴承座2一侧开有连通气体通道7的扇形凹槽5，扇形结构可以引导润滑油的喷射方向，扇形尾部面积大，有利于提高加热效果。
当机组工作时，润滑油从主进油口3进入主机，通过水平油道4、第二油道6分流至二级主机，润滑油在经过扇形凹槽5时，由于此处润滑油的压力高于气体通道7中二级入口的气体压力，所以在压差的作用下，润滑油将喷进二级入口，与气体一起进入二级主机，然后参与膨胀与排出过程。同时，扇形凹槽5的深度很浅,一般尺寸为0.2-0.3mm，不会对第二油道6中的润滑油压力产生大的影响。

Claims (3)

1.一种两级螺杆膨胀机级间加热结构，其包括一级壳体，所述一级壳体排气端安装有二级进气端轴承座，所述一级壳体内设置有气体通道，所述一级壳体的顶端开有竖向布置的主进油口，所述一级壳体内上端开有连通所述主进油口的水平油道，所述二级进气端轴承座开有与所述水平油道对应连通的第二油道，其特征在于，所述水平油道靠近所述二级进气端轴承座一侧开有连通所述气体通道的凹槽。
2.根据权利要求1所述的一种两级螺杆膨胀机级间加热结构，其特征在于，所述凹槽为扇形凹槽。
3.根据权利要求2所述的一种两级螺杆膨胀机级间加热结构，其特征在于，所述扇形凹槽的深度为0.2-0.3mm。
CN201710700526.4A 2017-08-16 2017-08-16 一种两级螺杆膨胀机级间加热结构 Pending CN107387169A (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1463446A (fr) * 1965-01-13 1966-12-23 Svenska Rotor Maskiner Ab Machine à rotors à vis
EP0042027A1 (de) * 1980-06-13 1981-12-23 Man Gutehoffnungshütte Gmbh Schraubenexpansionsmaschine
CN1417478A (zh) * 2002-12-16 2003-05-14 西安交通大学 一种制冷系统用转子压缩－膨胀机
JP2008175123A (ja) * 2007-01-18 2008-07-31 Yanmar Co Ltd ランキンサイクル動力回収装置
US20090090486A1 (en) * 2006-03-16 2009-04-09 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
CN106285785A (zh) * 2016-10-21 2017-01-04 西安琦通新能源设备有限公司 天然气压力能回收利用的单机双级膨胀螺杆机
CN207261049U (zh) * 2017-08-16 2018-04-20 无锡锡压压缩机有限公司 两级螺杆膨胀机级间加热结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1463446A (fr) * 1965-01-13 1966-12-23 Svenska Rotor Maskiner Ab Machine à rotors à vis
EP0042027A1 (de) * 1980-06-13 1981-12-23 Man Gutehoffnungshütte Gmbh Schraubenexpansionsmaschine
CN1417478A (zh) * 2002-12-16 2003-05-14 西安交通大学 一种制冷系统用转子压缩－膨胀机
US20090090486A1 (en) * 2006-03-16 2009-04-09 Behr Gmbh & Co. Kg Heat exchanger for a motor vehicle
JP2008175123A (ja) * 2007-01-18 2008-07-31 Yanmar Co Ltd ランキンサイクル動力回収装置
CN106285785A (zh) * 2016-10-21 2017-01-04 西安琦通新能源设备有限公司 天然气压力能回收利用的单机双级膨胀螺杆机
CN207261049U (zh) * 2017-08-16 2018-04-20 无锡锡压压缩机有限公司 两级螺杆膨胀机级间加热结构

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Application publication date: 20171124