CN101307897A - A device to ensure the flow uniformity of the medium in the primary circuit of the gas-cooled reactor in the steam generator - Google Patents

Abstract

Translated fromChinese

本发明涉及蒸汽发生器，具体涉及一种保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置。包括蒸汽发生器，扩口，遮流板，其特征在于：喇叭型扩口通过焊接安装在一回路冷却介质进入蒸汽发生器的热气导管处；遮流板在蒸汽发生器顶部腔室内，通过遮流板支撑杆与管板相连接，遮流板支撑杆的长度和角度可调。可以满足蒸汽发生器或换热器在热工水力、结构等方面提出的均匀性要求，减小了出口管板处的热应力，提高了蒸汽发生器的效率；应用广泛，成本低。The invention relates to a steam generator, in particular to a device for ensuring the flow uniformity of a primary circuit medium of a gas-cooled reactor in the steam generator. It includes a steam generator, a flare, and a baffle, and is characterized in that: the horn-shaped flare is installed at the hot gas conduit where the cooling medium of the primary circuit enters the steam generator through welding; the baffle is in the top chamber of the steam generator, through the hood The flow plate support bar is connected with the tube sheet, and the length and angle of the flow shield support bar are adjustable. It can meet the uniformity requirements of the steam generator or heat exchanger in terms of thermal hydraulics and structure, reduce the thermal stress at the outlet tube sheet, and improve the efficiency of the steam generator; it is widely used and low in cost.

Description

Translated fromChinese

保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置A device to ensure the flow uniformity of the medium in the primary circuit of the gas-cooled reactor in the steam generator

技术领域technical field

本发明涉及蒸汽发生器，具体涉及一种保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置。The invention relates to a steam generator, in particular to a device for ensuring the flow uniformity of a primary circuit medium of a gas-cooled reactor in the steam generator.

背景技术Background technique

高温气冷堆是采用石墨作为结构材料和慢化剂，用氦气作为冷却剂的新型反应堆。10MW高温气冷堆已经在清华建成并满功率运行，目前正在进行高温气冷堆核电站示范工程(HTR-PM)。HTR-PM蒸汽发生器采用组件式结构，整个蒸汽发生器由19个换热组件构成，每个换热组件在结构和换热功能上都是彼此独立的。为了确保每个换热组件出口蒸汽温度在限定的工作范围内，就必须要求一回路介质(通常为氦气或者二氧化碳)均匀的流经蒸汽发生器的换热管束，这样才能保证蒸汽发生器二次侧介质的出口温度满足均一性要求。The high-temperature gas-cooled reactor is a new type of reactor that uses graphite as the structural material and moderator, and helium as the coolant. The 10MW high-temperature gas-cooled reactor has been built in Tsinghua University and is running at full power, and the high-temperature gas-cooled reactor nuclear power plant demonstration project (HTR-PM) is currently underway. The HTR-PM steam generator adopts a modular structure. The whole steam generator is composed of 19 heat exchange components, and each heat exchange component is independent of each other in terms of structure and heat exchange function. In order to ensure that the outlet steam temperature of each heat exchange component is within the limited working range, it is necessary to require the primary circuit medium (usually helium or carbon dioxide) to flow uniformly through the heat exchange tube bundle of the steam generator, so as to ensure that the steam generator two The outlet temperature of the secondary side medium meets the uniformity requirements.

发明内容Contents of the invention

本发明提供了一种保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置，包括蒸汽发生器，扩口，遮流板，其特征在于：扩口通过焊接安装在一回路冷却介质进入蒸汽发生器的热气导管处；遮流板在蒸汽发生器顶部腔室内，通过遮流板支撑杆与管板相连接。The invention provides a device for ensuring the flow uniformity of the primary circuit medium of a gas-cooled reactor in a steam generator, including a steam generator, a flare, and a baffle, and is characterized in that the flare is installed on the primary circuit cooling medium by welding The place where the hot gas enters the steam generator; the baffle plate is in the top chamber of the steam generator, and is connected with the tube plate through the baffle plate support rod.

所述扩口为喇叭型扩口。The flared mouth is a horn-shaped flared mouth.

所述遮流板支撑杆能伸缩和调节角度。The shield support rod can be stretched and adjusted in angle.

本发明的有益效果为：所述遮流板的角度和与扩口间的距离可以通过遮流板支撑杆调节，遮流板结构可以消除一回路气体介质从水平管道中流出的惯性作用，使气体介质在整个顶部腔室的速度趋于一致；所述扩口和遮流板结构可以确保一回路冷却介质进入能够均匀的进入蒸汽发生器或换热器中，以满足蒸汽发生器或换热器在热工水力、结构等方面提出的均匀性要求，减小了出口管板处的热应力，提高了蒸汽发生器的效率；应用广泛，除应用与高温气冷堆蒸汽发生器上，还可以应用到其他的化工换热设备上。The beneficial effects of the present invention are: the angle of the baffle and the distance between the baffle and the flare can be adjusted through the baffle support rod, and the structure of the baffle can eliminate the inertia effect of the primary circuit gas medium flowing out of the horizontal pipeline, so that The velocity of the gas medium in the entire top chamber tends to be consistent; the flared and baffle structure can ensure that the cooling medium of the primary circuit enters the steam generator or heat exchanger uniformly to meet the requirements of the steam generator or heat exchange The uniformity requirements put forward by the device in terms of thermal hydraulics and structure reduce the thermal stress at the outlet tube sheet and improve the efficiency of the steam generator; it is widely used, in addition to being used in high-temperature gas-cooled reactor steam generators, it is also It can be applied to other chemical heat exchange equipment.

附图说明Description of drawings

图1为本发明所述装置的结构装配图。Fig. 1 is a structural assembly diagram of the device of the present invention.

图中标号：Labels in the figure:

1-水平导管；2-喇叭型扩口；3-顶部腔室；4-遮流板；5-管板；1-horizontal conduit; 2-horn flare; 3-top chamber; 4-baffle plate; 5-tube sheet;

6-遮流板支撑杆；7-蒸汽发生器的换热区域；8-绝热层。6-shield support rod; 7-heat exchange area of steam generator; 8-heat insulation layer.

具体实施方式Detailed ways

本发明提供了一种保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置，下面结合附图和具体实施方式对本发明进一步进行说明。The present invention provides a device for ensuring the flow uniformity of the medium in the primary circuit of the gas-cooled reactor in the steam generator. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

图1为本发明所述装置的结构装配图，将喇叭型扩口2焊接在一回路介质的水平导管1出口处，将遮流板4安装在顶部腔室3内，通过遮流板支撑杆6与管板5固定连接。Fig. 1 is the structural assembly diagram of the device of the present invention, thetrumpet flare 2 is welded at the outlet of thehorizontal conduit 1 of the primary circuit medium, thebaffle 4 is installed in thetop chamber 3, and the baffle is passed through thesupport bar 6 is fixedly connected with thetube sheet 5.

从水平导管1流出的一回路气体介质，通过导管出口处的喇叭型扩口2，均匀的分布于顶部腔室3中；通过调节遮流板支撑杆6的长度和角度，来改变遮流板4的安装位置和角度，以消除一回路气体介质从水平管道中流出的惯性作用，使气体介质在整个顶部腔室的速度趋于一致；均匀平稳的一回路气体介质进入蒸汽发生器的换热区7，实现换热效果；8为蒸汽发生器的绝热层。A loop of gas medium flowing out from thehorizontal conduit 1 is evenly distributed in thetop chamber 3 through the flaredmouth 2 at the exit of the conduit; the baffle is changed by adjusting the length and angle of thebaffle support rod 6 4 installation position and angle to eliminate the inertial effect of the primary circuit gas medium flowing out of the horizontal pipe, so that the speed of the gas medium in the entire top chamber tends to be consistent; the heat exchange of the primary circuit gas medium entering the steam generator is uniform andstable Zone 7 realizes the heat exchange effect;zone 8 is the thermal insulation layer of the steam generator.

本发明可以满足蒸汽发生器或换热器在热工水力、结构等方面提出的均匀性要求，减小了出口管板处的热应力，提高了蒸汽发生器的效率。The invention can meet the uniformity requirements of the steam generator or heat exchanger in terms of thermal hydraulics, structure, etc., reduces the thermal stress at the outlet tube plate, and improves the efficiency of the steam generator.

Claims (3)

Translated fromChinese

1.一种保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置，包括蒸汽发生器、扩口、遮流板，其特征在于，扩口通过焊接安装在一回路冷却介质进入蒸汽发生器的热气导管处；遮流板在蒸汽发生器顶部腔室内，通过遮流板支撑杆与蒸汽发生出口管板相连接。1. A device for ensuring the flow uniformity of the primary circuit medium of the gas-cooled reactor in the steam generator, including a steam generator, a flare, and a baffle plate, characterized in that the flare is installed on the primary loop cooling medium by welding and enters the steam The hot gas conduit of the generator; the baffle plate is in the top chamber of the steam generator, and is connected with the steam generation outlet tube plate through the baffle plate support rod.2.根据权利要求1所述的保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置，其特征在于，所述扩口为喇叭型扩口。2. The device for ensuring the flow uniformity of the medium in the primary circuit of the gas-cooled reactor in the steam generator according to claim 1, wherein the flaring is a trumpet-shaped flaring.3.根据权利要求1所述的保证气冷堆一回路介质在蒸汽发生器内流动均匀性的装置，其特征在于，所述遮流板支撑杆能伸缩和调节角度。3. The device for ensuring the flow uniformity of the medium in the primary circuit of the gas-cooled reactor in the steam generator according to claim 1, wherein the baffle support rod can be stretched and adjusted in angle.

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