CN113374880B - 臭氧老化箱内臭氧化气体流速的调节装置及其调节方法 - Google Patents

臭氧老化箱内臭氧化气体流速的调节装置及其调节方法 Download PDF

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CN113374880B
CN113374880B CN202110661853.XA CN202110661853A CN113374880B CN 113374880 B CN113374880 B CN 113374880B CN 202110661853 A CN202110661853 A CN 202110661853A CN 113374880 B CN113374880 B CN 113374880B
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张爱亮
刘悦
舒晓莲
丁臻敏
陈启悦
施禅臻
蔡泽仁
张子通
林芳
陆静怡
顾闻喆
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Shanghai Institute of Measurement and Testing Technology
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0209—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor the valve having a particular passage, e.g. provided with a filter, throttle or safety device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

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Abstract

本发明公开了一种臭氧老化箱内臭氧化气体流速的调节装置及其调节方法，臭氧老化箱包括内腔，内腔的顶面设有散流板，散流板上开设若干个散流孔，散流孔上均设有挡流板，挡流板与同步水平移动机构相连；同步水平移动机构与PLC相连；还包括气体流量监测仪，所述气体流量监测仪还与所述PLC相连。首先，采集臭氧化气体流量Q；其次，计算能够通过气流的散流孔面积S；根据臭氧化气体流速V的计算公式V＝Q/S获得臭氧化气体流速与预设于PLC内的臭氧化气体流速允许范围相比较，若其不在允许范围内，则水平移动挡流板调节能够通过气流的散流孔面积S，直至臭氧化气体流速在允许范围内。

Description

臭氧老化箱内臭氧化气体流速的调节装置及其调节方法
技术领域
本发明涉及气体流速的检测技术，更具体地说，是涉及一种空气进气流量小于95L/min，臭氧气体发生系统流量小于5L/min的臭氧老化试验箱内的臭氧化气体流速的调节装置及其调节方法。
背景技术
臭氧老化箱是为被测样品提供一个臭氧加速老化模拟环境，并判断被测样品是否符合耐臭氧性能的环境试验设备，广泛应用于橡塑、汽车、纺织和电线电缆以及新能源等领域。箱体内的臭氧化气体流速应足够大以防止试验老化消耗引起的臭氧浓度降低。臭氧的消耗速率随使用的橡胶、试验条件和其他试验细节而变化。因此臭氧化气体流速的量值溯源，对于被测样品起到至关重要的作用。
但是，目前市场上现有臭氧老化试验箱均无安装臭氧化气体流速调节装置，因此对于不同材料样品的臭氧老化试验，在整个臭氧老化试验中其最终的检测结果将带来极大的不确定性，导致相关产品检测结果差异性较大。若相关测试产品在上述设备条件下进行试验，将可能会无法发现产品质量存在的问题，导致严重的产品质量事故。
尤其是针对空气进气流量小于95L/min，臭氧气体发生系统流量小于5L/min的臭氧老化试验箱，箱内的臭氧化空气流速是无法用测量设备直接测量得到的，需通过换算得到。因为现有技术中对于低空气流速的测试，基本上都选用热式风速仪。该类设备的最小测量范围(0.01～1)m/s，显示精度为0.01m/s。且在0.3m/s流速及以下的测量准确度，在量值溯源上测量不确定大于Urel＝2.5％(k＝2)。
发明内容
针对现有技术中存在的问题，本发明的目的是提供一种臭氧老化箱内臭氧化气体流速的调节装置及其调节方法。
为达到上述目的，本发明采用如下的技术方案：
本发明的一方面，提供了一种臭氧老化箱内臭氧化气体流速的调节装置，所述臭氧老化箱包括内腔，所述内腔的顶面设有散流板，所述散流板上开设若干个散流孔，
所述散流孔上均设有挡流板，所述挡流板与同步水平移动机构相连；所述同步水平移动机构还与PLC相连；
还包括用于监测臭氧老化箱内臭氧化气体流量的气体流量监测仪，所述气体流量监测仪还与所述PLC相连。
本发明的另一方面，还提供了一种臭氧老化箱内臭氧化气体流速的调节方法，该方法的具体步骤为：
A.采集臭氧化气体流量Q；
B.计算能够通过气流的散流孔面积S；
C.臭氧化气体流速V的计算公式V＝Q/S；
D.将步骤C获得臭氧化气体流速与预设于PLC内的臭氧化气体流速允许范围相比较，若其不在允许范围内，则水平移动挡流板调节能够通过气流的散流孔面积S，直至臭氧化气体流速在允许范围内。
与现有技术相比，采用本发明的一种臭氧老化箱内臭氧化气体流速的调节装置及其调节方法，能够自动调节臭氧老化箱内臭氧化气体的流速。
附图说明
图1是本发明的实施例的原理示意图。
具体实施方式
下面结合附图和实施例进一步说明本发明的技术方案。
请参阅图1所示的一种臭氧老化箱内臭氧化气体流速的调节装置，臭氧老化箱的空气进气流量小于95L/min，臭氧气体发生系统流量小于5L/min。臭氧老化箱包括内腔，内腔的顶面设有散流板11，散流板上开设2个散流孔12，散流孔上均设有挡流板13，挡流板13与同步水平移动机构14相连；同步水平移动机构还与PLC(图中未示出)相连；
还包括用于监测臭氧老化箱内臭氧化气体流量的气体流量监测仪(图中未示出)，气体流量监测仪的进气口与臭氧老化箱的进气口相连，气体流量监测仪的出气口与PLC相连。
同步移动机构14例如可以采用如图所示的螺杆141、螺杆调节装置142以及设于挡流板13上的螺母(图中未示出)，螺杆调节装置142与PLC相连。
测试臭氧化空气流速的原理是通过测定箱内气体流量除以与气流方向垂直的箱体有效截面积来计算。气体流量是臭氧化空气在单位时间内通过的体积，流速应足够大以防止试验老化消耗引起的臭氧浓度降低。
臭氧老化箱内臭氧化气体流速的调节方法
1)臭氧老化箱开启并正常运行，由气体流量监测仪测出臭氧气体发生系统的所产生的臭氧化气体流量Q。
2)单个散流孔长为A，宽为B，X为挡流板在螺杆调节装置带动下的运行距离，散流板上散流孔的面积为S＝2A·(B-X)。
3)按照产品试验要求需要满足臭氧老化箱内臭氧化气体的流速在12mm/s～16mm/s之间。根据臭氧化气体流速的计算公式V＝Q/S，由PLC控制系统根据臭氧化气体流量Q，和调节装置上2个散流孔的面积S，来计算并判断臭氧化气体流速是否满足在12mm/s～16mm/s的范围要求内，如不在这个区间内，PLC控制系统根据计算结果给螺杆调节装置发送相应信号，使2块挡流板在螺杆的带动下在水平面上运动，通过调节散流孔的面积S＝2A·(B-X)，最终使臭氧化气体流速V在12mm/s～16mm/s之间。
本技术领域中的普通技术人员应当认识到，以上的实施例仅是用来说明本发明的目的，而并非用作对本发明的限定，只要在本发明的实质范围内，对以上所述实施例的变化、变型都将落在本发明的权利要求的范围内。

Claims (1)

1.一种用于运行调节装置的调节方法，该调节装置用于调节臭氧老化箱内臭氧化气体的流速，所述调节装置包括臭氧老化箱，所述臭氧老化箱包括内腔，所述内腔的顶面设有散流板，所述散流板上开设2个散流孔，其特征在于，
所述散流孔上均设有挡流板，所述挡流板与同步水平移动机构相连；所述同步水平移动机构还与PLC相连；所述同步水平移动机构包括螺杆、螺杆调节装置以及设于挡流板上的螺母，螺杆调节装置与PLC相连；
还包括用于监测臭氧老化箱内臭氧化气体流量的气体流量监测仪，所述气体流量监测仪还与所述PLC相连；
所述臭氧老化箱的空气进气流量小于95L/min，臭氧气体发生系统流量小于5L/min；
所述调节装置的具体调节步骤为：
A．采集臭氧化气体流量Q；
B．计算能够通过气流的散流孔面积S，S＝2A·(B-X)，其中，单个散流孔长为A，宽为B，X为挡流板在螺杆调节装置带动下的运行距离；
C．臭氧化气体流速V的计算公式V=Q/S；
D．将步骤C获得臭氧化气体流速与预设于PLC内的臭氧化气体流速允许范围相比较，若其不在允许范围内，则水平移动挡流板调节能够通过气流的散流孔面积S，直至臭氧化气体流速在允许范围内，所述允许范围在12mm/s~16mm/s之间。
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