CN115451646A - Drainage drying system of cooling system or equipment - Google Patents
Drainage drying system of cooling system or equipment Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 153
- 238000001035 drying Methods 0.000 title claims abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 255
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 124
- 239000002826 coolant Substances 0.000 claims abstract description 91
- 238000010926 purge Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000001291 vacuum drying Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims description 36
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000002285 radioactive effect Effects 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract 1
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- 238000009835 boiling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
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- 230000005484 gravity Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
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- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
本发明公开的一种冷却系统或设备的排水干燥系统,用于靶站的冷却系统或设备,其包括分别与冷却系统相通连接的介质自主排放系统、常温氮气吹扫系统、高温氮气吹扫系统和抽真空干燥系统。本发明通过在冷却系统的下方安装有排水阀和贮存罐,解决了现有技术中的冷却系统在运行、检修以及其他紧急情况需要维修时,都会遇到排水干燥的问题,以保证避免放射性气体扩散到工作场所,防止工作人员受到内辐射和工作场所污染,也保证了冷却剂浓度和启动时充氮气纯度。
A cooling system or equipment drainage drying system disclosed in the present invention is used for the cooling system or equipment of the target station, which includes a medium self-discharging system, a normal temperature nitrogen purging system, and a high temperature nitrogen purging system respectively connected to the cooling system and vacuum drying system. The present invention solves the problem that the cooling system in the prior art will encounter the problem of draining and drying during operation, maintenance and other emergency maintenance by installing a drain valve and a storage tank under the cooling system, so as to ensure the avoidance of radioactive gases Diffusion to the workplace prevents workers from internal radiation and workplace pollution, and also ensures the concentration of the coolant and the purity of the nitrogen gas at start-up.
Description
技术领域technical field
本发明涉及散裂中子源的靶站冷却的技术领域,尤其涉及一种用于靶站水冷却系统的冷却系统或设备的排水干燥系统。The invention relates to the technical field of target station cooling for spallation neutron sources, in particular to a cooling system or equipment drainage drying system for a target station water cooling system.
背景技术Background technique
在散裂中子源的靶站水冷却系统中,工作的环境或采用的冷却介质通常会有一定的放射性,冷却系统在运行、检修以及其他紧急情况需要维护时,都需要对冷却系统进行抽真空,目的是为了避免放射性介质或气体扩散到工作场所,造成工作人员受到内辐射和工作场所污染,以及保证冷却剂浓度和启动时充氮气纯度,所以每次检修前必须尽可能减小冷却系统内的冷却介质残留量。但是,目前的冷却系统冷却介质都是一次性使用的,减排完后就直接处理掉了,而且还会污染环境,也降低了冷却介质的循环利用率;以及,单纯利用冷却系统中冷却介质自身的重力去排放冷却介质,冷却系统的壁上必定还会残留有冷却介质;对于残留在壁上的冷却介质,通常采用常温的惰性气体进行吹扫冷却系统内仍残留在壁上的冷却介质,但是,由于冷却系统或设备中的管道直径不同,存在差异,使用常温的惰性气体对于小管径的吹扫排水效果不明显,导致冷却管道壁上仍残留有附着力更强的冷却介质。现有技术中,虽然也有采用高温惰性气体进行吹扫冷却管道壁上仍残留有附着力更强的冷却介质,可以解决上述的技术问题,但是,实际操作中发现,冷却管道壁上仍残留有沸点较高难以汽化的冷却介质,所以对于冷却系统、设备、管道内的具有放射性冷却介质是否完全排空的问题是个严峻的考验,关乎到工作人员的身心健康,和新加冷却介质纯度问题。In the water cooling system of the target station of the spallation neutron source, the working environment or the cooling medium used usually have certain radioactivity, and the cooling system needs to be pumped during operation, inspection and other emergency maintenance. Vacuum, the purpose is to avoid the spread of radioactive medium or gas to the workplace, causing the staff to be exposed to internal radiation and workplace pollution, and to ensure the concentration of the coolant and the purity of the nitrogen gas at start-up, so the cooling system must be reduced as much as possible before each maintenance The residual amount of cooling medium inside. However, the cooling medium in the current cooling system is disposable, and it will be disposed of directly after emission reduction, which will pollute the environment and reduce the recycling rate of the cooling medium; and, simply use the cooling medium in the cooling system To discharge the cooling medium by its own gravity, there must still be cooling medium on the wall of the cooling system; for the cooling medium remaining on the wall, usually use inert gas at normal temperature to purge the cooling medium still remaining on the wall in the cooling system However, due to the different diameters of the pipes in the cooling system or equipment, there are differences. The use of inert gas at room temperature has no obvious effect on purging and drainage of small pipe diameters, resulting in the cooling medium with stronger adhesion remaining on the wall of the cooling pipe. In the prior art, although high-temperature inert gas is used to purge the cooling pipe wall, there is still a cooling medium with stronger adhesion, which can solve the above technical problems. However, in actual operation, it is found that there are still residual The cooling medium has a high boiling point and is difficult to vaporize. Therefore, it is a severe test for whether the radioactive cooling medium in the cooling system, equipment, and pipelines is completely emptied. It is related to the physical and mental health of the staff and the purity of the newly added cooling medium.
发明内容Contents of the invention
本发明针对现有技术中的一个或多个问题,提出了一种冷却系统或设备的排水干燥系统,旨在解决上述背景技术中提出的技术问题。Aiming at one or more problems in the prior art, the present invention proposes a cooling system or a drain drying system for equipment, aiming to solve the technical problems raised in the above-mentioned background technology.
在本发明的一个方面,提出了一种冷却系统或设备的排水干燥系统作用于靶站的冷却系统或设备。In one aspect of the present invention, a drainage and drying system of a cooling system or equipment is proposed to act on the cooling system or equipment of a target station.
在本发明的另一个方面,提出的一种冷却系统或设备的排水干燥系统包括:分别与冷却系统相通连接的介质自主排放系统、常温氮气吹扫系统、高温氮气吹扫系统和抽真空干燥系统。In another aspect of the present invention, a cooling system or a drainage drying system for equipment proposed includes: a medium self-discharging system connected to the cooling system, a normal temperature nitrogen purging system, a high temperature nitrogen purging system and a vacuum drying system .
进一步的,所述冷却系统内具有冷却介质流通的冷却系统管道,所述介质自主排放系统包括安装在冷却系统管道上的排水阀、以及设置在冷却系统管道末端的贮存罐。Further, the cooling system has cooling system pipes through which the cooling medium circulates, and the self-discharging system of the medium includes a drain valve installed on the cooling system pipes and a storage tank arranged at the end of the cooling system pipes.
进一步的,所述的贮存罐安装在冷却系统管道的下方。Further, the storage tank is installed below the cooling system pipeline.
进一步的,所述常温氮气吹扫系统包括供氮装置、前端加热器和用于稳定气压的缓冲罐,所述缓冲罐与供氮装置之间通过氮气传输管道相通连接,该氮气传输管道上安装有前端加热器,且所述缓冲罐通过管道与冷却系统相通连接。Further, the normal temperature nitrogen purging system includes a nitrogen supply device, a front-end heater and a buffer tank for stabilizing the air pressure, and the buffer tank and the nitrogen supply device are connected through a nitrogen transmission pipeline, and the nitrogen transmission pipeline is installed There is a front-end heater, and the buffer tank is communicated with the cooling system through pipelines.
进一步的,所述供氮装置包括有至少一氮气瓶组、液氮泵、减压阀和保护层。Further, the nitrogen supply device includes at least one nitrogen cylinder group, a liquid nitrogen pump, a pressure reducing valve and a protective layer.
进一步的,所述高温氮气吹扫系统包括后端加热器,所述后端加热器安装在缓冲罐与冷却系统之间的管道上。Further, the high-temperature nitrogen purging system includes a back-end heater, and the back-end heater is installed on the pipeline between the buffer tank and the cooling system.
进一步的,所述贮存罐相通连接有冷凝器。Further, the storage tank is communicated with a condenser.
进一步的,所述贮存罐的排液管入口处设置有排气露点仪。Further, an exhaust dew point meter is installed at the inlet of the drain pipe of the storage tank.
进一步的,所述抽真空干燥系统包括真空泵和气体捕捉冷阱设备,所述气体捕捉冷阱设备与冷却系统和真空泵之间均采用真空软管相通连接,所述气体捕捉冷阱设备与冷却系统之间设置有冷凝进气露点仪。Further, the vacuum drying system includes a vacuum pump and a gas capture cold trap device, the gas capture cold trap device is connected to the cooling system and the vacuum pump by a vacuum hose, and the gas capture cold trap device is connected to the cooling system A condensing inlet dew point meter is arranged between them.
进一步的,所述气体捕捉冷阱设备包括冷凝外壳和液氮罐体组件,所述液氮罐体组件安装于冷凝外壳内,所述冷凝外壳的上部设置有冷凝入口和冷凝出口。Further, the gas capture cold trap device includes a condensation shell and a liquid nitrogen tank assembly, the liquid nitrogen tank assembly is installed in the condensation shell, and a condensation inlet and a condensation outlet are arranged on the upper part of the condensation shell.
进一步的,所述冷凝入口与冷却系统通过真空软管相通连接,所述冷凝出口管与真空泵通过真空软管相通连接。Further, the condensation inlet is connected to the cooling system through a vacuum hose, and the condensation outlet pipe is connected to the vacuum pump through a vacuum hose.
进一步的,所述冷凝外壳的底部设置有排液口。Further, the bottom of the condensing shell is provided with a drain port.
进一步的,所述冷凝进气露点仪安装在气体捕捉冷阱设备的冷凝入口处。Further, the condensate inlet dew point meter is installed at the condensate inlet of the gas capture cold trap equipment.
进一步的,所述气体捕捉冷阱设备的冷凝出口处设置有冷凝出气露点仪。Further, the condensation outlet of the gas capture cold trap equipment is provided with a condensate dew point meter.
本发明提供的一种冷却系统或设备的排水干燥系统,具有如下的有益效果:A cooling system or a drainage drying system for equipment provided by the present invention has the following beneficial effects:
1、本发明的介质自主排放系统,通过在冷却系统的下方安装有排水阀和贮存罐,解决了现有技术中的冷却系统在运行、检修以及其他紧急情况需要维修时,都会遇到排水干燥的问题,以保证放射性气体不会扩散到工作场所,避免工作人员受到内辐射和工作场所污染,也保证了冷却介质浓度和启动时充氮气纯度;1. The self-discharging system of the medium of the present invention, by installing a drain valve and a storage tank under the cooling system, solves the problem of draining and drying of the cooling system in the prior art during operation, maintenance and other emergency situations. In order to ensure that the radioactive gas will not spread to the workplace, avoid the staff from being exposed to internal radiation and workplace pollution, and also ensure the concentration of the cooling medium and the purity of the nitrogen gas at start-up;
2、本发明的常温氮气吹扫系统,通过在冷却系统的前端设置有供氮装置、前端加热器和缓冲罐,从而解决了现有的冷却系统单纯利用冷却介质自身的重力进行排,使得冷却系统的壁上必定还会残留有冷却介质的问题,实现了冷却系统壁上残留的冷却介质被常温氮气吹扫掉落,并由排液管引流至贮存罐,达到冷却系统进一步减排冷却介质含量的目的;2. The room temperature nitrogen purging system of the present invention is provided with a nitrogen supply device, a front-end heater and a buffer tank at the front end of the cooling system, thereby solving the problem that the existing cooling system simply uses the gravity of the cooling medium itself to discharge, so that the cooling There must still be cooling medium on the wall of the system, so that the remaining cooling medium on the wall of the cooling system is blown off by nitrogen at room temperature, and is drained to the storage tank by the drain pipe, so as to further reduce the discharge of cooling medium in the cooling system the purpose of content;
3、本发明的高温氮气吹扫系统,通过在常温氮气吹扫系统的基础上还设置有后端加热器,使得常温的氮气被加热到40~50℃,实现了残留在冷却管道壁上的冷却介质汽化,热氮气携载气态的冷却介质排至贮存罐内回收,解决了由于冷却系统或设备中的管道直径不同、存在差异,使用常温的氮气对于小管径的吹扫排水效果不明显,导致冷却管道壁上仍残留有附着力更强的冷却介质的问题;3. The high-temperature nitrogen purging system of the present invention is equipped with a rear-end heater on the basis of the normal-temperature nitrogen purging system, so that the normal-temperature nitrogen is heated to 40-50°C, and the remaining on the cooling pipe wall is realized. The cooling medium is vaporized, and the hot nitrogen gas carries the gaseous cooling medium and is discharged into the storage tank for recovery, which solves the problem that due to the different diameters and differences in the pipes in the cooling system or equipment, the use of nitrogen at room temperature has no obvious effect on purging and drainage of small pipe diameters , leading to the problem that there is still a cooling medium with stronger adhesion on the wall of the cooling pipe;
4、本发明的抽真空干燥系统,通过在冷却系统管道的末端设置有气体捕捉冷阱设备和真空泵,采用抽真空降压的方式将冷却系统管道壁上仍残留有热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质抽出,解决了冷却系统管道壁上仍残留有沸点较高难以汽化的冷却介质的问题,也解决了冷却系统管道内也存在其它气态介质的问题;4. In the vacuum drying system of the present invention, a gas capture cold trap device and a vacuum pump are arranged at the end of the cooling system pipeline, and the heat nitrogen and gaseous cooling medium still remaining on the cooling system pipeline wall are vacuumized and depressurized. And the cooling medium with a high boiling point that is difficult to vaporize is extracted, which solves the problem that there is still a cooling medium with a high boiling point that is difficult to vaporize on the wall of the cooling system pipeline, and also solves the problem that there are other gaseous media in the cooling system pipeline;
5、本发明的气体捕捉冷阱设备,具有冷凝冷却介质并回收的作用,设置的冷凝进气露点仪,可用于确定冷却系统、设备、管道中的冷却介质存留情况以及引入热氮气的流量,设置的冷凝出气露点仪,具有能够及时高效捕捉气态冷却介质的功能,用于保证冷凝出口无气态冷却介质,使得冷凝出口只有氮气被抽出。5. The gas capture cold trap equipment of the present invention has the function of condensing the cooling medium and reclaiming it. The condensing inlet dew point meter provided can be used to determine the cooling system, equipment, cooling medium retention in the pipeline and the flow rate of the introduced hot nitrogen. The set condensate outlet dew point instrument has the function of being able to capture the gaseous cooling medium in a timely and efficient manner, which is used to ensure that there is no gaseous cooling medium at the condensing outlet, so that only nitrogen is extracted from the condensing outlet.
附图说明Description of drawings
为了更好的理解本发明,将根据以下附图对本发明的实施例进行描述:In order to better understand the present invention, embodiments of the present invention will be described according to the following drawings:
图1为本发明实施例中的冷却系统或设备的排水干燥系统的流程图;Fig. 1 is the flow chart of the drainage drying system of cooling system or equipment in the embodiment of the present invention;
图2为本发明实施例中的介质自主排放系统的流程图;Fig. 2 is the flowchart of the self-discharging system of the medium in the embodiment of the present invention;
图3为本发明实施例中的常温氮气吹扫系统的流程图;Fig. 3 is the flowchart of the normal temperature nitrogen purge system in the embodiment of the present invention;
图4为本发明实施例中的高温氮气吹扫系统的流程图;Fig. 4 is the flowchart of the high temperature nitrogen purge system in the embodiment of the present invention;
图5为本发明实施例中的抽真空干燥系统的流程图;Fig. 5 is the flowchart of the vacuum drying system in the embodiment of the present invention;
图6为抽真空干燥系统中气体捕捉冷阱设备的正视结构示意图,Fig. 6 is a schematic diagram of the front view of the gas capture cold trap equipment in the vacuum drying system,
图7是图6中A-A处的透视结构示意图;Fig. 7 is the perspective structure schematic diagram of place A-A in Fig. 6;
图8为气体捕捉冷阱设备中液氮罐体组件的立体结构示意图;Fig. 8 is a schematic diagram of the three-dimensional structure of the liquid nitrogen tank assembly in the gas capture cold trap equipment;
其中,图中各附图标记:Wherein, each reference sign in the figure:
1-单向阀、2-排水阀、3-排气露点仪、4-冷凝进气露点仪、5-冷凝出气露点仪;1-Check valve, 2-Drain valve, 3-Exhaust dew point meter, 4-Condensation inlet dew point meter, 5-Condensation outlet dew point meter;
10-气体捕捉冷阱设备;10-Gas capture cold trap equipment;
11-冷凝外壳、111-冷凝入口、112-冷凝出口、113-排液口;11-condensation shell, 111-condensation inlet, 112-condensation outlet, 113-drainage port;
12-液氮罐体组件、121-法兰、122-中空腔体、123-液氮入口、124-氮气出口、125-安装盖板。12-liquid nitrogen tank assembly, 121-flange, 122-hollow cavity, 123-liquid nitrogen inlet, 124-nitrogen outlet, 125-installation cover.
具体实施方式detailed description
下面将详细描述本发明的具体实施例,应当注意,这里描述的实施例只用于举例说明,并不用于限制本发明。在以下描述中,为了提供对本发明的透彻理解,阐述了大量特定细节。然而,对于本领域普通技术人员显而易见的是:不必采用这些特定细节来实行本发明。在其他实例中,为了避免混淆本发明,未具体描述公知的电路、材料或方法。Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.
在整个说明书中,对“一个实施例”、“实施例”、“一个示例”或“示例”的提及意味着:结合该实施例或示例描述的特定特征、结构或特性被包含在本发明至少一个实施例中。因此,在整个说明书的各个地方出现的短语“在一个实施例中”、“在实施例中”、“一个示例”或“示例”不一定都指同一实施例或示例。此外,可以以任何适当的组合和/或子组合将特定的特征、结构或特性组合在一个或多个实施例或示例中。此外,本领域普通技术人员应当理解,在此提供的附图都是为了说明的目的,并且附图不一定是按比例绘制的。应当理解,当称元件“耦接到”或“连接到”另一元件时,它可以是直接耦接或耦接到另一元件或者可以存在中间元件。相反,当称元件“直接耦接到”或“直接连接到”另一元件时,不存在中间元件。相同的附图标记指示相同的元件。这里使用的术语“和/或”包括一个或多个相关列出的项目的任何和所有组合。Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in one embodiment," "in an embodiment," "an example," or "example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, particular features, structures or characteristics may be combined in any suitable combination and/or subcombination in one or more embodiments or examples. Additionally, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale. It will be understood that when an element is referred to as being "coupled" or "connected" to another element, it can be directly coupled or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly coupled to" or "directly connected to" another element, there are no intervening elements present. The same reference numerals designate the same elements. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
针对现有技术中的问题,在本发明的一个方面,提出了一种冷却系统或设备的排水干燥系统,其用于靶站的冷却系统或设备及其相连通的管道。In view of the problems in the prior art, in one aspect of the present invention, a cooling system or equipment drainage and drying system is proposed, which is used for the cooling system or equipment of the target station and the pipelines connected thereto.
在本发明的另一方面,如图1所示,提出的一种冷却系统或设备的排水干燥系统包括:介质自主排放系统、常温氮气吹扫系统、高温氮气吹扫系统和抽真空干燥系统,所述介质自主排放系统、常温氮气吹扫系统、高温氮气吹扫系统和抽真空干燥系统分别与冷却系统相连通连接。In another aspect of the present invention, as shown in Figure 1, a cooling system or a drainage drying system for equipment proposed includes: a self-discharging system for media, a normal temperature nitrogen purging system, a high temperature nitrogen purging system and a vacuum drying system, The medium self-discharging system, the normal temperature nitrogen purging system, the high temperature nitrogen purging system and the vacuum drying system are respectively connected with the cooling system.
如图2所示,在本实施例的介质自主排放系统,主要是为了自主排放冷却系统中可流动的冷却介质,由于靶站中冷却系统所采用的冷却介质具有一定的放射性,所以每次检修前,必须尽可能减小冷却系统内的冷却介质残留量。首先要排干冷却系统内的冷却介质,本发明中的介质自主排放系统主要是冷却系统利用重力排水,包括安装在冷却系统管道上的排水阀,以及设置在冷却系统管道末端的贮存罐,该贮存罐上安装有排液管,并通过排液管与冷却系统管道末端相通连接,且该贮存罐设置在冷却系统管道的下方,排水阀设置在冷却系统与贮存罐之间,当冷却系统停机时,打开冷却系统管道上的排水阀,残留在冷却系统中的可流动的冷却介质依靠重力引流由排液管排放至贮存罐,直至贮存罐液位不再上升为止,此时界定为可流动的冷却介质已自主排放完毕,但仍有附着在冷却系统的壁上残留的冷却介质。As shown in Figure 2, the medium autonomous discharge system in this embodiment is mainly for the purpose of autonomously discharging the cooling medium that can flow in the cooling system. Since the cooling medium used in the cooling system in the target station has certain radioactivity, each maintenance Before, the residual amount of cooling medium in the cooling system must be reduced as much as possible. Firstly, the cooling medium in the cooling system must be drained. The self-discharging system of the medium in the present invention is mainly that the cooling system utilizes gravity drainage, including a drain valve installed on the cooling system pipeline, and a storage tank arranged at the end of the cooling system pipeline. A drain pipe is installed on the storage tank, and is connected to the end of the cooling system pipe through the drain pipe, and the storage tank is set under the cooling system pipe, and the drain valve is set between the cooling system and the storage tank. When the cooling system shuts down At this time, open the drain valve on the cooling system pipe, and the flowable cooling medium remaining in the cooling system will be discharged from the drain pipe to the storage tank by gravity drainage until the liquid level of the storage tank no longer rises. At this time, it is defined as flowable. The cooling medium has been discharged autonomously, but there is still residual cooling medium attached to the wall of the cooling system.
另外贮存罐是可拆卸式安装的,具有较好的可替换性,贮存罐为一个或多个通过管道相通;当贮存罐装满时,可以拆卸下来随时更换。In addition, the storage tank is detachably installed and has better replaceability. One or more storage tanks are connected through pipelines; when the storage tank is full, it can be disassembled and replaced at any time.
当然,本实施例过程中的介质自主排放系统不限于冷却系统中使用,也可以用于与冷却系统相通的设备及管道;Of course, the medium self-discharging system in the process of this embodiment is not limited to use in the cooling system, and can also be used for equipment and pipelines that communicate with the cooling system;
以及,本实施例过程中的介质自主排放系统,排水阀与贮存罐之间还可以安装一波动箱,用以补偿冷却系统、设备、管道中由温度变化或泄涌引起的水体积变化。And, in the self-discharging system of the medium in the process of this embodiment, a surge box can also be installed between the drain valve and the storage tank to compensate for the water volume change caused by temperature changes or surges in the cooling system, equipment, and pipelines.
如图3所示,在本实施例的常温氮气吹扫系统,在介质自主排放系统完成重力自主排放可流动的冷却介质后介入,主要是解决还残存在冷却系统、设备、管道壁上的液态冷却介质的问题。本发明中的常温氮气吹扫系统的工作原理是采用常温氮气吹扫残存在冷却系统、设备、管道壁上的冷却介质,该常温氮气吹扫系统设置在介质自主排放系统的前端,且常温氮气吹扫系统包括供氮装置、前端加热器和用于稳定气压的缓冲罐,缓冲罐与供氮装置之间通过氮气传输管道相通连接,前端加热器安装在供氮装置与缓冲罐之间的氮气传输管道上,缓冲罐通过管道与冷却系统的前端相通连接,且该缓冲罐与冷却系统前端之间的管道上设置有单向阀,供氮装置包括有至少一氮气瓶组、液氮泵、减压阀和保护层。首先,氮气瓶里的液氮通过液氮泵或其他自增压装置将液氮输出,液氮经减压阀减压后,由氮气传输管道传输到前端加热器进行加热,使得液氮汽化到氮气(10~15Mpa),然后氮气经氮气传输管道进入缓冲罐,缓冲罐将通过的氮气减压至正常工作范围(0.05~0.4Mpa),然后按照设定的流量依靠压差分段吹向冷却系统、设备、管道内,使得壁上的残留液态冷却介质被常温氮气吹扫掉落或汽化吹干,被吹扫掉落的液态冷却介质,最终由排液管引流至贮存罐,直至贮存罐液位不再上升为止,此时,此时界定为残留在壁上的液态冷却介质已被常温氮气吹扫系统吹扫完毕,但冷却系统、设备、管道壁上仍残留有附着力更强的冷却介质。As shown in Figure 3, in the normal temperature nitrogen purge system of this embodiment, after the self-discharge system of the medium completes the self-discharging of the flowable cooling medium by gravity, it is mainly to solve the problem of liquid still remaining on the cooling system, equipment, and pipeline walls. Cooling medium problem. The working principle of the normal temperature nitrogen purge system in the present invention is to use normal temperature nitrogen to purge the cooling medium remaining on the cooling system, equipment, and pipeline walls. The purge system includes a nitrogen supply device, a front-end heater and a buffer tank for stabilizing the air pressure. The buffer tank and the nitrogen supply device are connected through a nitrogen transmission pipeline. On the transmission pipeline, the buffer tank is connected to the front end of the cooling system through the pipeline, and a check valve is arranged on the pipeline between the buffer tank and the front end of the cooling system. The nitrogen supply device includes at least one nitrogen cylinder group, a liquid nitrogen pump, Pressure relief valve and protective cover. First, the liquid nitrogen in the nitrogen cylinder is output through a liquid nitrogen pump or other self-pressurizing device. After the liquid nitrogen is decompressed by the pressure reducing valve, it is transported to the front-end heater by the nitrogen transmission pipeline for heating, so that the liquid nitrogen is vaporized to Nitrogen (10-15Mpa), and then the nitrogen enters the buffer tank through the nitrogen transmission pipeline, and the buffer tank depressurizes the passing nitrogen to the normal working range (0.05-0.4Mpa), and then blows to the cooling chamber in sections depending on the pressure difference according to the set flow rate. In the system, equipment, and pipelines, the residual liquid cooling medium on the wall is blown off by normal temperature nitrogen or vaporized and blown dry, and the liquid cooling medium that is blown off is finally drained to the storage tank by the drain pipe until the storage tank Until the liquid level no longer rises, at this time, it is defined as the liquid cooling medium remaining on the wall has been purged by the room temperature nitrogen purge system, but the cooling system, equipment, and pipeline walls still have stronger adhesion. cooling medium.
如图4所示,在本实施例的高温氮气吹扫系统,在常温氮气吹扫系统完成常温氮气吹扫掉落残留壁上的冷却介质后介入,主要是解决冷却系统、设备、管道壁上仍残留有附着力更强的冷却介质的问题。由于冷却系统、设备中的管道直径不同,存在差异,常温氮气对于小管径的吹扫排水效果不明显,导致冷却管道壁上仍残留有附着力更强的冷却介质。本发明中的高温氮气吹扫系统主要是采用热氮气吹扫附着力更强的冷却介质的方法,该高温氮气吹扫系统,还包括后端加热器,该后端加热器安装在缓冲罐与冷却系统前端之间的管道上(当然也包括了与冷却系统相通连接的设备及管道),并设置在单向阀的前端,同时,贮存罐相通连接有冷凝器,当贮存罐经常温氮气吹扫排水之后液位不再上升时,界定为残留在壁上的液态冷却介质已被常温氮气吹扫系统吹扫完毕,此时,保持常温氮气正常输出的前提下,高温氮气吹扫系统启动,更具体的是:启动后端加热器,将缓冲罐按照设定流量分段吹出的氮气加热至40~50℃,这样热氮气依靠压差吹向冷却系统、设备、管道内,使得残留在冷却管道壁上的冷却介质加速汽化,热氮气携载气态的冷却介质,由波动箱经冷却系统的排液管排至贮存罐,贮存罐的排液管入口处设置有排气露点仪,当测量排气露点温度小于-20℃时,即可界定为仍残留在冷却系统、设备、管道壁上附着力更强的冷却介质已被热氮气吹扫系统完成热氮气吹扫,另外,气态的冷却介质则由贮存罐排至冷凝器进行冷凝回收,最后排放至高效过滤器系统,此时,冷却系统、设备及管道壁上仍残留有热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质。As shown in Figure 4, in the high-temperature nitrogen purging system of this embodiment, after the normal-temperature nitrogen purging system completes the normal-temperature nitrogen purging and dropping the cooling medium on the residual wall, it is mainly to solve the cooling system, equipment, and pipeline walls. The problem of a more adhering cooling medium still remains. Due to the different diameters of the pipes in the cooling system and equipment, there are differences. The effect of normal temperature nitrogen on the purging and drainage of small pipe diameters is not obvious, resulting in the cooling medium with stronger adhesion remaining on the wall of the cooling pipe. The high-temperature nitrogen purging system in the present invention mainly adopts the method of hot nitrogen purging the cooling medium with stronger adhesion. The high-temperature nitrogen purging system also includes a rear-end heater, which is installed between the buffer tank and the The pipes between the front ends of the cooling system (including the equipment and pipes connected to the cooling system, of course) are arranged at the front end of the check valve. At the same time, the storage tank is connected to a condenser. When the storage tank is often blown with warm nitrogen When the liquid level does not rise after sweeping and draining, it is defined as the liquid cooling medium remaining on the wall has been purged by the normal temperature nitrogen purge system. At this time, under the premise of maintaining the normal temperature nitrogen output, the high temperature nitrogen purge system starts. More specifically: start the back-end heater, and heat the nitrogen blown out of the buffer tank in sections according to the set flow rate to 40-50°C, so that the hot nitrogen is blown into the cooling system, equipment, and pipelines depending on the pressure difference, so that the remaining nitrogen in the cooling system The cooling medium on the pipe wall accelerates vaporization, and the hot nitrogen carries the gaseous cooling medium, which is discharged from the surge tank through the drain pipe of the cooling system to the storage tank. An exhaust dew point meter is installed at the inlet of the drain pipe of the storage tank. When measuring When the dew point temperature of the exhaust gas is less than -20°C, it can be defined as the cooling medium that still remains on the cooling system, equipment, and pipe walls with stronger adhesion has been purged by the hot nitrogen gas purging system. In addition, the gaseous cooling The medium is discharged from the storage tank to the condenser for condensation recovery, and finally discharged to the high-efficiency filter system. At this time, there are still hot nitrogen, gaseous cooling medium, and cooling materials with a high boiling point that are difficult to vaporize on the cooling system, equipment and pipeline walls. medium.
在本实施例过程中的后端加热器为电加热器,主要包括加热管、高温法兰和接线腔,其基本参数:(1)设计压力:1Mpa;(2)工作压力:0.05~0.4Mpa;(3)工作电压:三相380V;(4)功率:100KW;(5)电热管表面热负荷:3W/cm2;(6)设计温度≤200℃;(7)防爆等级:ExdⅡBT4;(8)接线腔与法兰材质:SS304,加热管外壳材质SS304。The back-end heater in the process of this embodiment is an electric heater, mainly including a heating tube, a high-temperature flange and a wiring cavity, and its basic parameters: (1) Design pressure: 1Mpa; (2) Working pressure: 0.05-0.4Mpa ; (3) Working voltage: three-phase 380V; (4) Power: 100KW; (5) Heat load on the surface of electric heating tube: 3W/cm2; (6) Design temperature ≤ 200°C; (7) Explosion-proof grade: ExdⅡBT4; (8) )Wiring cavity and flange material: SS304, heating pipe shell material SS304.
如图5所示,在本实施例的抽真空干燥系统,在高温氮气吹扫系统完成热氮气吹扫冷却介质完毕之后介入,主要是解决冷却系统、设备的管道壁上仍残留有热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质。本发明中的抽真空干燥系统采用抽真空降压的方式将冷却系统、设备的管道壁上仍残留有热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质抽出,包括真空泵和气体捕捉冷阱设备,气体捕捉冷阱设备是可拆卸式安装在冷却系统管道的末端,且该气体捕捉冷阱设备与冷却系统和真空泵之间均采用真空软管相通连接,同时该气体捕捉冷阱设备与冷却系统之间设置有冷凝进气露点仪,根据水的三相图数据,冷却系统的真空度低于600Pa时,冷却系统里存留的冷却介质吸热会变成固态,因此应该维持冷却系统、设备、管道的真空度高于600Pa,需要引入热氮气体保证冷却系统的真空度高于600Pa(本领域技术人员容易理解的是:高温氮气吹扫系统停止之后,冷却系统、设备及管道壁上是残留有热氮气的,或者,启动高温氮气吹扫系统引入热氮气使之冷却系统的真空度高于600Pa),首先,启动真空泵逐步抽真空至4kPa~1kpa,其原理是水的沸点随压力降低而降低,此时在室温下,沸点较高难以汽化的冷却介质已达沸腾状态,经真空泵抽气吹扫,由热氮气携载死角残余的冷却介质到气体捕捉冷阱设备内回收,而氮气则由真空泵抽出排放,气态的冷却介质在气体捕捉冷阱设备内凝固成固态的冷却介质,当气体捕捉冷阱设备回收满时,可以拆卸下来随时替换,具有较好的可替换性,或者,气体捕捉冷阱设备为一个或多个通过管道相通的,可以提高回收效率,另外,通过冷凝进气露点仪测量的露点温度小于-20℃时,可以确定冷却系统、设备、管道中的冷却介质存留情况和引入热氮气的流量,从而界定仍残留在冷却系统、设备、管道壁上的热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质已全部被抽出完毕,此时,工作人员可以对冷却系统进行检修、维护或者更换新的加冷却介质。As shown in Figure 5, in the vacuum drying system of this embodiment, after the high-temperature nitrogen purge system completes the hot nitrogen purge of the cooling medium, it intervenes mainly to solve the problem of hot nitrogen remaining on the pipe wall of the cooling system and equipment, Gaseous cooling media and cooling media with high boiling points that are difficult to vaporize. The vacuum drying system in the present invention uses vacuum pumping and depressurization to extract hot nitrogen, gaseous cooling medium, and cooling medium with a high boiling point that is difficult to vaporize that still remain on the pipe wall of the cooling system and equipment, including vacuum pumps and gas capture. Cold trap equipment, gas capture cold trap equipment is detachably installed at the end of the cooling system pipe, and the gas capture cold trap equipment is connected with the cooling system and vacuum pump with vacuum hoses, and the gas capture cold trap equipment There is a condensing inlet dew point meter between the cooling system and water. According to the three-phase diagram data of water, when the vacuum degree of the cooling system is lower than 600Pa, the cooling medium retained in the cooling system will absorb heat and become solid, so the cooling system should be maintained , equipment, pipeline vacuum degree is higher than 600Pa, it is necessary to introduce hot nitrogen gas to ensure that the vacuum degree of the cooling system is higher than 600Pa (those skilled in the art can easily understand that after the high temperature nitrogen purge system is stopped, the cooling system, equipment and pipeline wall There is residual hot nitrogen on the surface, or start the high-temperature nitrogen purge system to introduce hot nitrogen to make the vacuum of the cooling system higher than 600Pa). The pressure decreases. At this time, at room temperature, the cooling medium with a high boiling point that is difficult to vaporize has reached a boiling state. After being pumped and purged by a vacuum pump, the hot nitrogen carries the remaining cooling medium in the dead corner to the gas capture cold trap equipment for recovery. The nitrogen is pumped out by the vacuum pump, and the gaseous cooling medium is solidified into a solid cooling medium in the gas capture cold trap equipment. When the gas capture cold trap equipment is fully recovered, it can be disassembled and replaced at any time, which has good replaceability. Alternatively, one or more gas capture cold traps are connected through pipelines, which can improve the recovery efficiency. In addition, when the dew point temperature measured by the condensing inlet dew point meter is less than -20°C, the cooling system, equipment, and pipelines can be determined. The retention of the cooling medium and the flow rate of the introduced hot nitrogen, so as to define that the hot nitrogen remaining on the cooling system, equipment, and pipeline walls, the gaseous cooling medium, and the cooling medium with a high boiling point that is difficult to vaporize have all been pumped out. At this time, The staff can overhaul and maintain the cooling system or replace it with a new cooling medium.
在本实施例过程中的抽真空干燥系统,气体捕捉冷阱设备与冷却系统、设备的管道之间也安装有排水阀,并设置在冷凝进气露点仪的前端,当然,在本实施例过程中的抽真空干燥系统介入时,排水阀是打开的。In the vacuum drying system in the process of this embodiment, a drain valve is also installed between the gas capture cold trap equipment, the cooling system, and the pipeline of the equipment, and is arranged at the front end of the condensing intake dew point instrument. Of course, in the process of this embodiment When the vacuum drying system in the machine is involved, the drain valve is open.
如图6至8所示,在本实施例过程中的气体捕捉冷阱设备,是具有冷凝冷却介质并回收的作用,包括冷凝外壳和液氮罐体组件,液氮罐体组件可拆卸式安装在冷凝外壳内,冷凝外壳的上部设置有冷凝入口和冷凝出口,用于将气体捕捉冷阱设备与冷却系统和真空泵相通连接,其接法是冷凝入口通过真空软管与冷却系统相通连接,冷凝出口管通过真空软管与真空泵相通连接,同时,冷凝外壳的底部设置有排液口,用于安装排液管与收集罐相通连接,所以,只需要给气体捕捉冷阱设备加热,凝固在气体捕捉冷阱设备内的固态冷却介质融化成液态冷却介质,由冷凝外壳底部的排液口经排液管排至收集罐内回收,操作既简单又方便,进一步的,冷凝进气露点仪是设置在气体捕捉冷阱设备的冷凝入口处,主要是用于确定冷却系统、设备、管道中的冷却介质存留情况,当然还要确定引入热氮气的流量,另外,气体捕捉冷阱设备的冷凝出口处设置有冷凝出气露点仪,具有能够及时高效捕捉气态冷却介质的功能,用于保证冷凝出口无气态冷却介质,使得冷凝出口只有氮气被抽出,若冷凝出气露点仪捕捉到冷凝出口处有气态冷却介质的存在,则说明液氮罐体组件内的液氮含量不足了,需要拆卸下来进行替换,当然,液氮罐体组件可以多个同时安装在冷凝外壳内,可以提高气态冷却介质的凝固效率,该液氮罐体组件是具有较好的可替换性,其包括中空的法兰和多个安装在法兰上的中空腔体,中空腔体用于填装液氮,该中空腔体上的制冷片采用1.5*10*420的316L不锈钢片,中空腔体是采用氩弧焊的焊接方式(焊接牌号为ER308L)焊接在法兰一侧面,并开设有液氮入口和氮气出口,而法兰的另一侧面一体成型有安装盖板,用于密封安装于冷凝外壳的顶部。As shown in Figures 6 to 8, the gas capture cold trap equipment in the process of this embodiment has the function of condensing and recovering the cooling medium, including the condensation shell and the liquid nitrogen tank assembly, and the liquid nitrogen tank assembly is detachable. In the condensing shell, the upper part of the condensing shell is provided with a condensing inlet and a condensing outlet, which are used to connect the gas capture cold trap equipment with the cooling system and the vacuum pump. The connection method is that the condensing inlet is connected with the cooling system through a vacuum hose. The outlet pipe is connected to the vacuum pump through a vacuum hose. At the same time, the bottom of the condensing shell is provided with a drain port for installing the drain pipe to communicate with the collection tank. Therefore, it is only necessary to heat the gas capture cold trap equipment to condense in the gas The solid cooling medium in the capture cold trap equipment melts into a liquid cooling medium, which is discharged from the drain port at the bottom of the condensing shell through the drain pipe to the collection tank for recovery. The operation is simple and convenient. Further, the condensing inlet dew point meter is set At the condensation inlet of the gas capture cold trap equipment, it is mainly used to determine the retention of the cooling medium in the cooling system, equipment, and pipelines. Of course, it is also necessary to determine the flow rate of the introduced hot nitrogen. In addition, at the condensation outlet of the gas capture cold trap equipment Equipped with a condensate dew point meter, which has the function of capturing gaseous cooling medium in a timely and efficient manner. It is used to ensure that there is no gaseous cooling medium at the condensate outlet, so that only nitrogen is extracted from the condensate outlet. If the condensate dew point meter captures the gaseous cooling medium at the condensate outlet The existence of the liquid nitrogen tank assembly indicates that the liquid nitrogen content in the liquid nitrogen tank assembly is insufficient and needs to be disassembled for replacement. Of course, multiple liquid nitrogen tank assemblies can be installed in the condensation shell at the same time, which can improve the solidification efficiency of the gaseous cooling medium. The liquid nitrogen tank assembly has better replaceability, and it includes a hollow flange and a plurality of hollow cavities installed on the flanges, the hollow cavities are used for filling liquid nitrogen, and the hollow cavities on the hollow cavities The cooling sheet is made of 1.5*10*420 316L stainless steel sheet. The hollow cavity is welded on the side of the flange by argon arc welding (the welding grade is ER308L), and there are liquid nitrogen inlet and nitrogen outlet. The other side of the body is integrally formed with an installation cover plate, which is used for sealing and installing on the top of the condensing shell.
该液氮罐体组件进行压力试验:壳程试验压力为0.125Mpa,管程试验压力为0.25Mpa,试验温度为5~25℃,试验程序及验收标准按GB150.4-2011要求执行,试验完成后用洁净的压缩空气将内部吹干。The liquid nitrogen tank assembly undergoes a pressure test: the shell side test pressure is 0.125Mpa, the tube side test pressure is 0.25Mpa, and the test temperature is 5-25°C. The test procedure and acceptance criteria are implemented in accordance with the requirements of GB150.4-2011, and the test is completed. Finally, dry the inside with clean compressed air.
该液氮罐体组件进行气密性试验:壳程气密性试验为0.1Mpa,管程气密性试验为0.2Mpa,介子为洁净氮气,试验程序与验收标准按GB150.4-2011要求执行,液氮罐体组件制作完成后清洗污垢、除油、表面(包括焊缝)做酸洗钝化处理。The airtightness test of the liquid nitrogen tank components: the airtightness test of the shell side is 0.1Mpa, the airtightness test of the tube side is 0.2Mpa, and the meson is clean nitrogen. The test procedure and acceptance standard are in accordance with the requirements of GB150.4-2011. After the body components are made, clean dirt, degrease, and pickle and passivate the surface (including welds).
在本实施例过程中不限于所采用的氮气和液氮,也可以采用其它惰性元素气体及其液态的物理状态,例如氦气、氖气、氩气、氪气、氙气等等,有效拓展气源的使用,满足不同环境的使用需要。In the process of this embodiment, it is not limited to the nitrogen and liquid nitrogen used, and other inert element gases and their liquid physical states, such as helium, neon, argon, krypton, xenon, etc., can also be used to effectively expand gas Sources can be used to meet the needs of different environments.
本发明的有益效果是:The beneficial effects of the present invention are:
1、本发明的介质自主排放系统,通过在冷却系统的下方安装有排水阀和贮存罐,解决了现有技术中的冷却系统在运行、检修以及其他紧急情况需要维修时,都会遇到排水干燥的问题,以保证放射性气体不会扩散到工作场所,避免工作人员受到内辐射和工作场所污染,也保证了冷却介质浓度和启动时充氮气纯度;1. The self-discharging system of the medium of the present invention, by installing a drain valve and a storage tank under the cooling system, solves the problem of draining and drying of the cooling system in the prior art during operation, maintenance and other emergency situations. In order to ensure that the radioactive gas will not spread to the workplace, avoid the staff from being exposed to internal radiation and workplace pollution, and also ensure the concentration of the cooling medium and the purity of the nitrogen gas at start-up;
2、本发明的常温氮气吹扫系统,通过在冷却系统的前端设置有供氮装置、前端加热器和缓冲罐,从而解决了现有的冷却系统单纯利用冷却介质自身的重力进行排,使得冷却系统的壁上必定还会残留有冷却介质的问题,实现了冷却系统壁上残留的冷却介质被常温氮气吹扫掉落,并由排液管引流至贮存罐,达到冷却系统进一步减排冷却介质含量的目的;2. The room temperature nitrogen purging system of the present invention is provided with a nitrogen supply device, a front-end heater and a buffer tank at the front end of the cooling system, thereby solving the problem that the existing cooling system simply uses the gravity of the cooling medium itself to discharge, so that the cooling There must still be cooling medium on the wall of the system, so that the remaining cooling medium on the wall of the cooling system is blown off by nitrogen at room temperature, and is drained to the storage tank by the drain pipe, so as to further reduce the discharge of cooling medium in the cooling system the purpose of content;
3、本发明的高温氮气吹扫系统,通过在常温氮气吹扫系统的基础上还设置有后端加热器,使得常温的氮气被加热到40~50℃,实现了残留在冷却管道壁上的冷却介质汽化,热氮气携载气态的冷却介质排至贮存罐内回收,解决了由于冷却系统或设备中的管道直径不同、存在差异,使用常温的氮气对于小管径的吹扫排水效果不明显,导致冷却管道壁上仍残留有附着力更强的冷却介质的问题;3. The high-temperature nitrogen purging system of the present invention is equipped with a rear-end heater on the basis of the normal-temperature nitrogen purging system, so that the normal-temperature nitrogen is heated to 40-50°C, and the remaining on the cooling pipe wall is realized. The cooling medium is vaporized, and the hot nitrogen gas carries the gaseous cooling medium and is discharged into the storage tank for recovery, which solves the problem that due to the different diameters and differences in the pipes in the cooling system or equipment, the use of nitrogen at room temperature has no obvious effect on purging and drainage of small pipe diameters , leading to the problem that there is still a cooling medium with stronger adhesion on the wall of the cooling pipe;
4、本发明的抽真空干燥系统,通过在冷却系统管道的末端设置有气体捕捉冷阱设备和真空泵,采用抽真空降压的方式将冷却系统管道壁上仍残留有热氮气、气态的冷却介质以及沸点较高难以汽化的冷却介质抽出,解决了冷却系统管道壁上仍残留有沸点较高难以汽化的冷却介质的问题,也解决了冷却系统管道内也存在其它气态介质的问题;4. In the vacuum drying system of the present invention, a gas capture cold trap device and a vacuum pump are arranged at the end of the cooling system pipeline, and the heat nitrogen and gaseous cooling medium still remaining on the cooling system pipeline wall are vacuumized and depressurized. And the cooling medium with a high boiling point that is difficult to vaporize is extracted, which solves the problem that there is still a cooling medium with a high boiling point that is difficult to vaporize on the wall of the cooling system pipeline, and also solves the problem that there are other gaseous media in the cooling system pipeline;
5、本发明的气体捕捉冷阱设备,具有冷凝冷却介质并回收的作用,设置的冷凝进气露点仪,可用于确定冷却系统、设备、管道中的冷却介质存留情况以及引入热氮气的流量,设置的冷凝出气露点仪,具有能够及时高效捕捉气态冷却介质的功能,用于保证冷凝出口无气态冷却介质,使得冷凝出口只有氮气被抽出。5. The gas capture cold trap equipment of the present invention has the function of condensing the cooling medium and reclaiming it. The condensing inlet dew point meter provided can be used to determine the cooling system, equipment, cooling medium retention in the pipeline and the flow rate of the introduced hot nitrogen. The set condensate outlet dew point instrument has the function of being able to capture the gaseous cooling medium in a timely and efficient manner, which is used to ensure that there is no gaseous cooling medium at the condensing outlet, so that only nitrogen is extracted from the condensing outlet.
上述实施例仅为本发明的具体实施例,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些显而易见的替换形式均属于本发明的保护范围。The above-mentioned embodiments are only specific embodiments of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.
Claims (10)
Priority Applications (1)
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6001327A (en) * | 1998-07-01 | 1999-12-14 | Lockheed Martin Energy Systems, Inc. | Sealed-bladdered chemical processing method and apparatus |
JP2001108199A (en) * | 1999-10-12 | 2001-04-20 | Tori Chemical Kenkyusho:Kk | Fluid transferring piping device and fluid supply device which facilitate purging of residual material, purging method for residual material in piping device, and fluid supply method |
CN101212998A (en) * | 2005-05-13 | 2008-07-02 | 麻醉气体回收有限公司 | Method and apparatus for anesthetic gas reclamation |
CN111485206A (en) * | 2020-04-14 | 2020-08-04 | 兰州大学 | A vacuum target station system |
CN216873677U (en) * | 2021-12-23 | 2022-07-01 | 广州高澜节能技术股份有限公司 | Water cooling device applied to boron neutron medical device |
-
2022
- 2022-10-14 CN CN202211262536.1A patent/CN115451646A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6001327A (en) * | 1998-07-01 | 1999-12-14 | Lockheed Martin Energy Systems, Inc. | Sealed-bladdered chemical processing method and apparatus |
JP2001108199A (en) * | 1999-10-12 | 2001-04-20 | Tori Chemical Kenkyusho:Kk | Fluid transferring piping device and fluid supply device which facilitate purging of residual material, purging method for residual material in piping device, and fluid supply method |
CN101212998A (en) * | 2005-05-13 | 2008-07-02 | 麻醉气体回收有限公司 | Method and apparatus for anesthetic gas reclamation |
CN111485206A (en) * | 2020-04-14 | 2020-08-04 | 兰州大学 | A vacuum target station system |
CN216873677U (en) * | 2021-12-23 | 2022-07-01 | 广州高澜节能技术股份有限公司 | Water cooling device applied to boron neutron medical device |
Non-Patent Citations (3)
Title |
---|
何宁,张炳云,梁辉宏,吴耀达,姚从菊,范霖,林雄,王燕燕,刘宇,韩海芬,庄毅,张占利,张金山: "CSNS靶站水冷却系统方案优化研究", 中国核科学技术进展报告(第五卷)——中国核学会2017年学术年会论文集第3册(核能动力分卷), pages 117 - 122 * |
董荣亮: "催化重整装置安全运行与管理", 31 October 2005, 中国石化出版社, pages: 62 * |
韩文光: "化工装置实用操作技术指南", 31 October 2001, 化学工业出版社, pages: 55 * |
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