WO2019015663A1 - 燃气轮机前的终端过滤器装置 - Google Patents

燃气轮机前的终端过滤器装置 Download PDF

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Publication number
WO2019015663A1
WO2019015663A1 PCT/CN2018/096404 CN2018096404W WO2019015663A1 WO 2019015663 A1 WO2019015663 A1 WO 2019015663A1 CN 2018096404 W CN2018096404 W CN 2018096404W WO 2019015663 A1 WO2019015663 A1 WO 2019015663A1
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Prior art keywords
filter
main body
gas turbine
vertical cylindrical
filter element
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PCT/CN2018/096404
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English (en)
French (fr)
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魏驰
钱栋
丁梦琪
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上海航天能源股份有限公司
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Priority claimed from CN201710593791.7A external-priority patent/CN107174908A/zh
Priority claimed from CN201720881434.6U external-priority patent/CN207169331U/zh
Application filed by 上海航天能源股份有限公司 filed Critical 上海航天能源股份有限公司
Publication of WO2019015663A1 publication Critical patent/WO2019015663A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas

Definitions

  • the present application relates to a terminal filtering device in front of a gas turbine, and belongs to the technical field of filters.
  • the solid particles Prior to natural gas enters the gas turbine, the solid particles (generally composed of sand, rust, tar, and silica (SiO 2 )) should be limited to prevent corrosion, fouling, and clogging of the gas nozzle.
  • Solid particles supplied from the gas to the combustion system should be limited to less than 30 ppmwt. The maximum diameter is 5 ⁇ m and all solid particles cannot exceed 5 ⁇ m.
  • the owner must provide a filter to remove 99.5% by weight of all particles by weight and more than 5 ⁇ m of all particles before entering the gas turbine.
  • the existing gas turbine terminal filtration generally adopts a Y-shaped filter with a simple structure.
  • this filter is limited by the air flow pipe diameter, and the impurity removal ability is weak, which is likely to cause the filter to be clogged or even to be broken down, and needs to be frequently replaced. It has an impact on the normal operation of the gas turbine. .
  • the technical problem to be solved by the present application is: the existing terminal filtering device in front of the gas turbine, the filter is limited by the air flow pipe diameter, the impurity removal ability is weak, and the filter mesh is easily blocked or even broken down, and needs to be frequently replaced, for the gas turbine. Normal operation has an impact.
  • a terminal filter device in front of a gas turbine includes a main body, an intake end, and an air outlet end; the body is in a vertical cylindrical structure, and the intake end and the outlet end are located on both sides of the body; the main body corresponds to the intake end
  • the L-shaped baffle is provided at the portion, and the vertical cylindrical filter element is disposed on the rear side of the L-shaped baffle. The upper end of the vertical cylindrical filter element is open and fixed inside the main body.
  • the lower part of the main body is provided with a fixed platform 1 , and the bottom of the vertical cylindrical filter element is fixedly disposed with a lower hole plate, and the lower hole plate is fixedly connected with the fixed platform 1 by the middle shaft 2; the upper end of the middle shaft 2 is The end face flange 4 of the main body is fixedly connected.
  • the vertical cylindrical filter element has a three-layer structure, the innermost layer is a filter screen composed of 15 mm*15 mm square holes, the middle layer is filtered with a 300-mesh stainless steel wire mesh, and the outermost layer is a circular hole having a diameter of 10 mm.
  • the filter mesh is a three-layer structure, the innermost layer is a filter screen composed of 15 mm*15 mm square holes, the middle layer is filtered with a 300-mesh stainless steel wire mesh, and the outermost layer is a circular hole having a diameter of 10 mm.
  • the filter mesh is a three-layer structure, the innermost layer is a filter screen composed of 15 mm*15 mm square holes, the middle layer is filtered with a 300-mesh stainless steel wire mesh, and the outermost layer is a circular hole having a diameter of 10 mm. The filter mesh.
  • the inner wall of the main body and the outer wall of the L-shaped baffle are welded and fixed to the spacer ring 3, and the spacer ring 3 limits the circumference of the upper portion of the vertical cylindrical filter element.
  • the upper end of the vertical cylindrical filter element is fixedly provided with a support structure with a hole.
  • the vertical cylindrical filter elements of different heights have a plurality of vertical cylindrical filter elements of different heights according to the filter level.
  • the fixed platform 1 has a through hole, and below the fixed platform 1 is a dirt collecting chamber.
  • the filter is not limited by the diameter of the gas flow, the filtration capacity is greatly enhanced, and the impurity removal ability is strong;
  • the flow direction of the airflow forms a lateral-upward-lateral-downward-lateral flow process, increasing the flow stroke of the airflow inside the terminal filter device, and improving the filtering effect.
  • the collecting chamber realizes the collecting function and the design is ingenious.
  • the filter is provided with a three-layer structure, which not only ensures the structural strength but also improves the filtering effect.
  • the filter element has higher strength and more reasonable structure. Even if it is damaged, the debris will not enter the downstream to damage the downstream equipment; the volume of the filter cavity is increased, and the filter processing capacity is improved.
  • the filter screen was transformed into a three-layer filter structure with increased filtration area, increased strength, and improved filtration progress.
  • Figure 1 is a schematic illustration of a Y-type filter employed in the prior art.
  • FIG. 2 is a top plan view of a terminal filter device in front of a gas turbine of the present application.
  • Figure 3 is a view taken along the line A in Figure 2 .
  • Fig. 4 is a longitudinal sectional view of Fig. 3;
  • Fig. 5 is a schematic view showing the flow of gas in the terminal filter device.
  • Fig. 6 is a plan view showing the development of a sieve composed of a circular hole having a diameter of 10 mm in the outermost layer of the filter.
  • Fig. 7 is a schematic view of a filter screen composed of 15 mm * 15 mm square holes in the innermost layer of the filter.
  • a terminal filter device in front of a gas turbine includes a main body, an intake end, and an air outlet end; the body is in a vertical cylindrical structure, and the intake end and the outlet end are located on both sides of the body;
  • An L-shaped baffle is arranged in a portion corresponding to the intake end in the main body, and a vertical cylindrical filter element is arranged on the rear side of the L-shaped baffle. The upper end of the vertical cylindrical filter element is open and fixed inside the main body.
  • the lower part of the main body is provided with a fixed platform 1, and the bottom of the vertical cylindrical filter element is fixedly disposed with a lower hole plate, and the lower hole plate is fixedly connected with the fixed platform 1 by the middle shaft 2
  • the upper end of the center shaft 2 is fixedly connected to the end face flange 4 of the main body.
  • the vertical cylindrical filter element has a three-layer structure
  • the innermost layer is a filter screen composed of 15 mm ⁇ 15 mm square holes
  • the intermediate layer is filtered with a 300-mesh stainless steel wire mesh.
  • the outermost layer is a sieve composed of a circular hole having a diameter of 10 mm.
  • the inner wall of the main body and the outer wall of the L-shaped baffle are welded and fixed to the spacer ring 3, and the spacer ring 3 limits the circumference of the upper portion of the vertical cylindrical filter element.
  • the upper end of the vertical cylindrical filter element is fixedly provided with a support structure with a hole.
  • the vertical cylindrical filter elements of different heights have a plurality of vertical cylindrical filter elements of different heights according to the filter level.
  • the fixed platform 1 has a through hole, and below the fixed platform 1 is a dirt collecting chamber.
  • the baffle Since the baffle is arranged inside the filter, the gas passes through the inlet of the terminal filter device, and large particulate impurities will hit the L-shaped baffle at the inlet and fall into the bottom trap chamber due to gravity. The gas then continues to flow upwards to the various parts of the circumference of the screen, through the filter element to the interior and out of the filter.
  • the improvement of the vertical cylindrical filter element increases the volume of the inner cavity of the filter, and the setting of the baffle will filter large particles of impurities in advance, avoiding a large impact on the wall of the filter screen and prolonging the use time of the filter screen.
  • the filter screen of the present application adopts a three-layer filter structure, the innermost layer is a filter screen composed of 15mm ⁇ 15mm square holes (see FIG. 7 for details), and the intermediate layer is filtered with a grade of 300 mesh stainless steel mesh, and the outermost layer. It is a filter made up of 10mm diameter holes (see Figure 6 for details).
  • a three-layer filter structure increases the filtration area, increases the strength, and improves the filtration accuracy.
  • the original Y-type filter needs to be cleaned and replaced every day.
  • This application uses a new filter to greatly improve the filtration efficiency and reduce the labor.
  • the filter device of the present application has higher strength and more reasonable structure. Even if it is damaged, the debris does not enter the downstream damage to the downstream equipment; the volume of the filter cavity is increased, and the filter processing capacity is improved.
  • the filter screen is transformed into a three-layer filter structure, and the filtration area is increased, the strength is increased, and the filtration progress is improved.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)

Abstract

一种燃气轮机前的终端过滤器装置，包括主体、进气端、出气端；主体呈立式圆筒结构，进气端与出气端位于主体两侧；主体内与进气端对应的部位设有L形挡板，L形挡板后侧设置立式筒状滤芯（7），立式筒状滤芯（7）上端开口，并固定在主体内部。

Description

燃气轮机前的终端过滤器装置
本申请请求如下在先申请的优先权：
1、中国专利申请号201710593791.7，申请日2017年7月20日
2、中国专利申请号201720881434.6，申请日2017年7月20日
技术领域
本申请涉及一种燃气轮机前的终端过滤装置，属于过滤器技术领域。
背景技术
在天燃气进入燃气轮机前，其中的固体颗粒(一般由沙粒、铁锈、焦油和硅石(SiO 2)等组成)应被限制以防止燃气喷嘴受到侵蚀、结垢和堵塞。根据E00-05139 R1气体燃料技术规范中的要求：从燃气中供应到燃烧***的固体颗粒应限制在30ppmwt以下。最大直径为5μm，所有固体颗粒都不能超过5μm。为了满足这一规范要求，燃气在进入燃机以前，业主必须提供过滤器除去所有颗粒重量比的99.5％wt和大于5μm的所有颗粒。现有燃气轮机终端过滤一般采用结构简单的Y型过滤器。但是这种过滤器受到气流管径限制，杂质去除能力弱，极易造成滤网堵塞甚至被击穿，需要频繁更换。对燃气轮机的正常运行造成了影响。。
发明概述
技术问题
本申请需要解决的技术问题是：现有的燃气轮机前的终端过滤装置，过滤器受到气流管径限制，杂质去除能力弱，极易造成滤网堵塞甚至被击穿，需要频繁更换，对燃气轮机的正常运行造成了影响。
问题的解决方案
技术解决方案
本申请采取以下技术方案：
一种燃气轮机前的终端过滤器装置，包括主体、进气端、出气端；所述本体呈立式圆筒结构，进气端与出气端位于本体两侧；所述主体内与进气端对应的部 位设有L形挡板，L形挡板后侧设置立式筒状滤芯，所述立式筒状滤芯上端开口，并固定在所述主体内部。
进一步的，所述主体下部设置固定平台1，所述立式筒状滤芯底部固定设置下孔板，采用中轴杆2将所述下孔板与固定平台1固定连接；中轴杆2上端与主体的端面法兰4固定连接。
进一步的，所述立式筒状滤芯具有三层结构，最内层是由15mm*15mm方孔组成的滤网，中间层过滤等级为300目的不锈钢丝网，最外层是直径10mm的圆孔组成的滤网。
进一步的，所述主体内壁及L形挡板的外壁上焊接固定隔离环3，所述隔离环3对立式筒状滤芯的上部的周围进行限位。
更进一步的，所述立式筒状滤芯的上端固定设置带孔的支撑结构。
进一步的，不同高度的立式筒状滤芯具有多个，根据过滤等级选择不同高度的立式筒状滤芯。
进一步的，所述固定平台1具有通孔，固定平台1下方是集污腔。
发明的有益效果
有益效果
本申请的有益效果在于：
1)过滤器不受到气流管径的限制，过滤能力大大加强，杂质去除能力强；
2)设置L形挡板，对气流进行阻挡，减少气流对立式筒状滤芯的冲击，可靠性增强；
3)气流的流向形成横向-向上-横向-向下-横向的流动过程，增加气流在终端过滤器装置内部的流动行程，提高过滤的效果。
4)集污腔实现集污功能，设计巧妙。
5)过滤器设置三层结构，既保证了结构强度，又提升了过滤效果。
6)避免了滤网堵塞甚至被击穿的现象，维持燃气机正常运作。
7)根据过滤能力的需要，可以更换不同高度的立式筒状滤芯。
8)滤芯强度更高，结构更合理，即便破损，碎片也不会进入下游损害下游设备；增大了过滤器内腔的容积，提升了过滤器处理能力。将过滤器滤网改造为 三层式滤网结构，过滤面积增大、强度增加、过滤进度提升。
对附图的简要说明
附图说明
图1是现有技术采用的Y型过滤器的示意图。
图2是本申请燃气轮机前的终端过滤器装置的俯视图。
图3是图2中的A向视图。
图4是图3的纵剖视图。
图5是终端过滤器装置中，气体流向示意图。
图6是过滤器最外层直径10mm的圆孔组成的滤网的平面展开示意图。
图7是过滤器最内层由15mm*15mm方孔组成的滤网的示意图。
图中，1.固定平台，2.中轴杆，3.隔离环，4.端面法兰，5.集污腔，6.L形挡板，7.立式筒状滤芯。
发明实施例
具体实施方式
下面结合附图和具体实施例对本申请进一步说明。
参见图1-图7，一种燃气轮机前的终端过滤器装置，包括主体、进气端、出气端；所述本体呈立式圆筒结构，进气端与出气端位于本体两侧；所述主体内与进气端对应的部位设有L形挡板，L形挡板后侧设置立式筒状滤芯，所述立式筒状滤芯上端开口，并固定在所述主体内部。
在此实施例中，参见图4，所述主体下部设置固定平台1，所述立式筒状滤芯底部固定设置下孔板，采用中轴杆2将所述下孔板与固定平台1固定连接；中轴杆2上端与主体的端面法兰4固定连接。
在此实施例中，参见图6-7，所述立式筒状滤芯具有三层结构，最内层是由15mm×15mm方孔组成的滤网，中间层过滤等级为300目的不锈钢丝网，最外层是直径10mm的圆孔组成的滤网。
在此实施例中，参见图4，所述主体内壁及L形挡板的外壁上焊接固定隔离环3，所述隔离环3对立式筒状滤芯的上部的周围进行限位。
在此实施例中，参见图4，所述立式筒状滤芯的上端固定设置带孔的支撑结构 。
在此实施例中，不同高度的立式筒状滤芯具有多个，根据过滤等级选择不同高度的立式筒状滤芯。
在此实施例中，参见图4，所述固定平台1具有通孔，固定平台1下方是集污腔。
由于过滤器内部设置挡板，气体经终端过滤器装置入口，较大的颗粒杂质会在入口处撞击到L形挡板上，因重力作用，落入底部集污腔。然后气体继续向上流动到达滤网圆周各个部分，通过滤芯过滤面到达内部后向下流出过滤器。
立式筒状滤芯的改进增大了过滤器内腔的容积，挡板的设置会提前过滤较大颗粒杂质，避免对滤网壁面较大的撞击，延长滤网使用时间。
本申请的过滤器滤网采用三层式滤网结构，最内层是由15mm×15mm方孔组成的滤网(详见图7)，中间层过滤等级为300目的不锈钢丝网，最外层是直径10mm的圆孔组成的滤网(详见图6)。这样的三层式滤网结构使得过滤面积增大、强度增加、过滤精度提升。
原Y型过滤器每天都需清洗更换，本申请采用新型过滤器后大大提高了过滤效率，减少了人工量。
内部试验甲：两台机组共改造4台过滤器，机组现况白天运行，晚上停机。跟换过滤器后至今已使用快2年，没有出现过任何问题。最长连续起机时间为2-3个月(夏季带负荷)。
内部试验乙：两台机组共改造4台过滤器，机组最长连续运行时间为4×24小时，更换过滤器后至今已使用1年。运行情况良好。每满6个月定期清理滤网。
本申请过滤装置滤芯强度更高，结构更合理，即便破损，碎片也不会进入下游损害下游设备；增大了过滤器内腔的容积，提升了过滤器处理能力。将过滤器滤网改造为三层式滤网结构，过滤面积增大、强度增加、过滤进度提升。
以上是本申请的优选实施例，本领域普通技术人员还可以在此基础上进行各种变换或改进，在不脱离本申请总的构思的前提下，这些变换或改进都应当属于本申请要求保护的范围之内。
PCT/CN2018/096404 2017-07-20 2018-07-20 燃气轮机前的终端过滤器装置 WO2019015663A1 (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201720881434.6 2017-07-20
CN201710593791.7A CN107174908A (zh) 2017-07-20 2017-07-20 燃气轮机前的终端过滤器装置
CN201710593791.7 2017-07-20
CN201720881434.6U CN207169331U (zh) 2017-07-20 2017-07-20 燃气轮机前的终端过滤器装置

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CN204723934U (zh) * 2015-06-28 2015-10-28 天津蓝庭门窗科技有限公司 自清洁的新风净化器滤筒结构
CN205995212U (zh) * 2016-08-22 2017-03-08 诺威尔（天津）能源装备股份有限公司 一种用于cng压缩机缸头入口处的过滤缓冲装置
CN107174908A (zh) * 2017-07-20 2017-09-19 上海航天能源股份有限公司 燃气轮机前的终端过滤器装置
CN207169331U (zh) * 2017-07-20 2018-04-03 上海航天能源股份有限公司 燃气轮机前的终端过滤器装置

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