CN216386860U - Three show HP-U dew point hygrometer - Google Patents

Three show HP-U dew point hygrometer Download PDF

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CN216386860U
CN216386860U CN202122608298.2U CN202122608298U CN216386860U CN 216386860 U CN216386860 U CN 216386860U CN 202122608298 U CN202122608298 U CN 202122608298U CN 216386860 U CN216386860 U CN 216386860U
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detection chamber
gas detection
dew point
gas
display
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王萍
崔晓飞
乔海平
白涛
王振涛
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Qingdao Binhai University
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Abstract

本实用新型公开了一种三显HP‑U露点湿度计,包括气体温度显示仪、相对湿度显示仪、露点温度显示仪、相对湿度计算器、第一气体检测室和第二气体检测室,以及与第一气体检测室和第二气体检测室相连的进气管道,所述第一气体检测室和第二气体检测室的内腔底部设有露点镜,所述第一气体检测室和第二气体检测室内设有均设有电阻温度计,所述第一气体检测室内设有安装在露点镜底部的半导体制冷器,所述第一气体检测室和第二气体检测室的内腔顶部均设有反射光敏电阻、散射光敏电阻和光源,所述直流调节电源接收从对比器传递的信号,并调节直流电流的大小,来控制半导体制冷器的制冷量。本实用新型具有测量准确的特点。

Figure 202122608298

The utility model discloses a three-display HP-U dew point hygrometer, comprising a gas temperature display device, a relative humidity display device, a dew point temperature display device, a relative humidity calculator, a first gas detection chamber and a second gas detection chamber, and an inlet pipe connected to the first gas detection chamber and the second gas detection chamber, the bottom of the inner cavity of the first gas detection chamber and the second gas detection chamber is provided with a dew point mirror, the first gas detection chamber and the second gas detection chamber are provided with a dew point mirror The gas detection chamber is equipped with resistance thermometers, the first gas detection chamber is provided with a semiconductor refrigerator installed at the bottom of the dew point mirror, and the tops of the inner chambers of the first gas detection chamber and the second gas detection chamber are provided with Reflecting photoresistor, scattering photoresistor and light source, the DC adjusting power supply receives the signal transmitted from the contrast device and adjusts the magnitude of the direct current to control the cooling capacity of the semiconductor refrigerator. The utility model has the characteristics of accurate measurement.

Figure 202122608298

Description

一种三显HP-U露点湿度计A three-display HP-U dew point hygrometer

技术领域technical field

本实用新型涉及露点检测技术领域,具体为一种三显HP-U露点湿度计。The utility model relates to the technical field of dew point detection, in particular to a three-display HP-U dew point hygrometer.

背景技术Background technique

在工程中,空气的温度和湿度是两个相关的热工参数,他们具有同样重要的意义。例如在电子工业中,空气湿度的高低决定着电子工业产品的成品率;在纺织工业中,纤维强度受空气中相对湿度的影响;在印刷工业中,空气湿度的高低决定印刷质量。In engineering, air temperature and humidity are two related thermal parameters, and they are equally important. For example, in the electronics industry, the air humidity determines the yield of electronic products; in the textile industry, the fiber strength is affected by the relative humidity in the air; in the printing industry, the air humidity determines the printing quality.

在天然气工业中,天然气中水分的存在会对天然生产、加工、集输等过程产生影响。例如天然气中含有的水分过高,会在节流阀处由于节流降温产生冰水混合物造成堵塞;如果天然气管道运输期间存在液态水问题,会加速酸性组分对管壁以及相关部件的腐蚀速率,不仅会对管道使用寿命造成不利影响,同时也会对天然气企业经营管理效益造成不利影响。天然气的含水量是天然气工业的一个重要指标,对天然气中的水分有着严格的要求。《输气管道工程设计规范》GB50251-2003中规定在管输天然气中水露点应比输送条件下最低环境温度低5℃。准确测定天然气中水分的含量对于天然气工业至关重要。In the natural gas industry, the presence of moisture in natural gas will have an impact on natural production, processing, gathering and transportation and other processes. For example, if the moisture contained in natural gas is too high, it will cause blockage at the throttle valve due to throttling and cooling of ice-water mixture; if there is a problem with liquid water during the transportation of natural gas pipelines, it will accelerate the corrosion rate of acid components on the pipe wall and related components , which will not only adversely affect the service life of the pipeline, but also adversely affect the operation and management efficiency of natural gas enterprises. The moisture content of natural gas is an important indicator in the natural gas industry, and there are strict requirements for the moisture in natural gas. The "Code for Design of Gas Pipeline Engineering" GB50251-2003 stipulates that the dew point of water in pipeline natural gas should be 5°C lower than the minimum ambient temperature under transmission conditions. Accurate determination of the moisture content of natural gas is critical to the natural gas industry.

气体中的含水量可以用水露点来表示,其饱和含水量取决于气体的温度、压力和组成等条件。在一定压力下气体中所含水蒸气量达到饱和时,开始冷凝结露的温度称为天然气水露点温度(以下简称露点温度),而现有的测量机构具有测量不准确的缺陷。因此我们对此做出改进,提出一种三显HP-U露点湿度计。The water content in the gas can be expressed by the water dew point, and its saturated water content depends on the temperature, pressure and composition of the gas. When the water vapor content in the gas reaches saturation under a certain pressure, the temperature at which condensation begins is called the natural gas water dew point temperature (hereinafter referred to as the dew point temperature), and the existing measurement mechanism has the defect of inaccurate measurement. Therefore, we improved this and proposed a three-display HP-U dew point hygrometer.

实用新型内容Utility model content

为了解决上述技术问题,本实用新型提供了如下的技术方案:In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions:

本实用新型一种三显HP-U露点湿度计,包括气体温度显示仪、相对湿度显示仪、露点温度显示仪、相对湿度计算器、第一气体检测室和第二气体检测室,以及与第一气体检测室和第二气体检测室相连的进气管道,所述第一气体检测室和第二气体检测室的内腔底部设有露点镜,所述第一气体检测室和第二气体检测室内设有均设有电阻温度计,所述第一气体检测室内设有安装在露点镜底部的半导体制冷器,所述气体温度显示仪与第二气体检测室中的电阻温度计电连接;所述相对湿度显示仪与相对湿度计算器电性连接;所述相对湿度计算器与第一气体检测室中的电阻温度计和第二气体检测室中的电阻温度计电连接;所述第一气体检测室中的电阻温度计与露点温度显示仪电连接,所述第二气体检测室中的电阻温度计与气体温度显示仪电连接;所述半导体制冷器上电连接有直流调节电源;所述第一气体检测室和第二气体检测室内设有对露点镜表面进行清洁的清洁机构。所述第一气体检测室和第二气体检测室的内腔顶部均设有反射光敏电阻、散射光敏电阻和光源,所述反射光敏电阻、散射光敏电阻经光电桥路连接有放大器,所述放大器电连接有对比器,所述对比器与直流调节电源电连接,所述直流调节电源接收从对比器传递的信号,并调节直流电流的大小,来控制半导体制冷器的制冷量。The utility model is a three-display HP-U dew point hygrometer, which comprises a gas temperature display device, a relative humidity display device, a dew point temperature display device, a relative humidity calculator, a first gas detection chamber and a second gas detection chamber, and a third gas detection chamber and a second gas detection chamber. An intake pipe connecting the gas detection chamber and the second gas detection chamber, the bottom of the inner cavity of the first gas detection chamber and the second gas detection chamber is provided with a dew point mirror, the first gas detection chamber and the second gas detection chamber The chambers are equipped with resistance thermometers, the first gas detection chamber is provided with a semiconductor refrigerator installed at the bottom of the dew point mirror, and the gas temperature display instrument is electrically connected to the resistance thermometer in the second gas detection chamber; The humidity display instrument is electrically connected with the relative humidity calculator; the relative humidity calculator is electrically connected with the resistance thermometer in the first gas detection chamber and the resistance thermometer in the second gas detection chamber; The resistance thermometer is electrically connected with the dew point temperature display instrument, the resistance thermometer in the second gas detection chamber is electrically connected with the gas temperature display instrument; the semiconductor refrigerator is electrically connected with a DC regulating power supply; the first gas detection chamber and The second gas detection chamber is provided with a cleaning mechanism for cleaning the surface of the dew point mirror. The tops of the inner cavities of the first gas detection chamber and the second gas detection chamber are provided with a reflection photoresistor, a scattering photoresistor and a light source, and an amplifier is connected to the reflection photoresistor and the scattering photoresistor via a photoelectric bridge circuit, and the amplifier A contrast device is electrically connected, and the contrast device is electrically connected with a DC regulating power supply, and the DC regulating power supply receives a signal transmitted from the contrast device and adjusts the magnitude of the DC current to control the cooling capacity of the semiconductor refrigerator.

作为本实用新型的一种优选技术方案,所述进气管道上连接有保护气体通入管道,所述保护气体通入管道的端部连接氮气储罐,且所述保护气体通入管道上设有氮气控制阀。As a preferred technical solution of the present invention, a protective gas inlet pipe is connected to the air inlet pipe, the end of the protective gas inlet pipe is connected to a nitrogen storage tank, and the protective gas inlet pipe is provided with a nitrogen storage tank. With nitrogen control valve.

作为本实用新型的一种优选技术方案,所述第一气体检测室和第二气体检测室上均设有对内部压力值检测的压力计。As a preferred technical solution of the present invention, both the first gas detection chamber and the second gas detection chamber are provided with pressure gauges for detecting internal pressure values.

作为本实用新型的一种优选技术方案,所述第一气体检测室和第二气体检测室上均设有放气管,所述放气管上设有出口控制阀。As a preferred technical solution of the present invention, the first gas detection chamber and the second gas detection chamber are provided with a gas release pipe, and an outlet control valve is provided on the gas release pipe.

作为本实用新型的一种优选技术方案,所述进气管道经输送支管分别与第一气体检测室和第二气体检测室连接,且输送支管上设有进口控制阀。As a preferred technical solution of the present invention, the air inlet pipe is respectively connected to the first gas detection chamber and the second gas detection chamber through the conveying branch pipe, and the conveying branch pipe is provided with an inlet control valve.

作为本实用新型的一种优选技术方案,所述进气管道的进器端设有风机。As a preferred technical solution of the present invention, the inlet end of the air inlet pipe is provided with a fan.

作为本实用新型的一种优选技术方案,所述清洁机构包括设置在露点镜外围的基板,所述基板上设有一对平行设置的往复丝杆和限位光杆,所述往复丝杆上设有沿往复丝杆往复运动的滑块,所述限位光杆上设有沿限位光杆移动的限位滑套,所述滑块与限位滑套安装有对露点镜表面清洁的刮板。As a preferred technical solution of the present invention, the cleaning mechanism includes a base plate arranged on the periphery of the dew point mirror, a pair of parallel reciprocating screw rods and a limit polishing rod are arranged on the base plate, and the reciprocating screw rod is provided with A sliding block reciprocating along the reciprocating screw rod, the limiting polished rod is provided with a limiting sliding sleeve that moves along the limiting polished rod, and a scraper for cleaning the surface of the dew point mirror is installed on the sliding block and the limiting sliding sleeve.

本实用新型的有益效果是:The beneficial effects of the present utility model are:

该种三显HP-U露点湿度计通过设置第一气体检测室和第二气体检测室将被测气体输送到气体检测室,首先利用被测气体对检测室进行吹扫,除去气体检测室原有气体,并且密闭静置,稳定被测气体的压力,消除压力对测量结果的影响,并且通过设置露点镜清洁机构来对露点镜自动清理,确保露点镜表面干净、光洁,减少误差;此外通过两组光电信号对比来确定露点形成,不仅可以测量清洁气体的露点和相对湿度,还可以测量还有灰尘、纤维等污染物的气体的露点和相对湿度,适用范围更为广泛;同时显示露点温度、气体温度和相对湿度,操作简单,使用方便。The three-display HP-U dew point hygrometer transmits the measured gas to the gas detection room by setting the first gas detection room and the second gas detection room, and firstly uses the measured gas to purge the detection room to remove the original gas detection room. There is gas, and it is sealed and static to stabilize the pressure of the gas to be measured, eliminate the influence of pressure on the measurement results, and automatically clean the dew point mirror by setting the dew point mirror cleaning mechanism to ensure that the surface of the dew point mirror is clean and smooth, reducing errors; The two sets of photoelectric signals are compared to determine the dew point formation, which can not only measure the dew point and relative humidity of clean gas, but also measure the dew point and relative humidity of gas with pollutants such as dust and fibers, and has a wider range of applications; at the same time, it can display the dew point temperature , gas temperature and relative humidity, simple operation, easy to use.

附图说明Description of drawings

附图用来提供对本实用新型的进一步理解,并且构成说明书的一部分,与本实用新型的实施例一起用于解释本实用新型,并不构成对本实用新型的限制。在附图中:The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

图1是本实用新型一种三显HP-U露点湿度计的结构示意图;Fig. 1 is the structural representation of a kind of three-display HP-U dew point hygrometer of the present utility model;

图2是本实用新型一种三显HP-U露点湿度计的清洁机构的结构示意图。2 is a schematic structural diagram of a cleaning mechanism of a three-display HP-U dew point hygrometer of the present invention.

图中:1、气体温度显示仪;2、相对湿度显示仪;3、露点温度显示仪;4、相对湿度计算器;5、第一气体检测室;6、第二气体检测室;7、反射光敏电阻;8、散射光敏电阻;9、光源;10、露点镜;11、电阻温度计;12、半导体制冷器;13、直流调节电源;14、光电桥路;15、放大器;16、对比器;17、保护气体通入管道;18、氮气储罐;20、氮气控制阀;21、压力计;22、放气管;23、出口控制阀;24、输送支管;25、进口控制阀;26、进气管道;27、清洁机构;28、往复丝杆;29、限位光杆;30、滑块;31、限位滑套;32、刮板;33、基板;34、风机。In the figure: 1. Gas temperature indicator; 2. Relative humidity indicator; 3. Dew point temperature indicator; 4. Relative humidity calculator; 5. The first gas detection chamber; 6. The second gas detection chamber; 7. Reflection Photoresistor; 8. Scattering photoresistor; 9. Light source; 10. Dew point mirror; 11. Resistance thermometer; 12. Semiconductor refrigerator; 17. Protective gas inlet pipe; 18. Nitrogen storage tank; 20. Nitrogen control valve; 21. Pressure gauge; 22. Bleed pipe; 23. Outlet control valve; Air pipeline; 27, cleaning mechanism; 28, reciprocating screw; 29, limit polished rod; 30, slider; 31, limit sliding sleeve; 32, scraper; 33, base plate; 34, fan.

具体实施方式Detailed ways

以下结合附图对本实用新型的优选实施例进行说明,应当理解,此处所描述的优选实施例仅用于说明和解释本实用新型,并不用于限定本实用新型。The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, but not to limit the present utility model.

实施例:如图1、图2所示,本实用新型一种三显HP-U露点湿度计,包括气体温度显示仪1、相对湿度显示仪2、露点温度显示仪3、相对湿度计算器4、第一气体检测室5和第二气体检测室6,以及与第一气体检测室5和第二气体检测室6相连的进气管道26,所述第一气体检测室5和第二气体检测室6的内腔底部设有露点镜10,所述第一气体检测室5和第二气体检测室6内设有均设有电阻温度计11,所述第一气体检测室5内设有安装在露点镜底部的半导体制冷器12,所述气体温度显示仪1与第二气体检测室6中的电阻温度计11电连接,显示温度数据;所述相对湿度显示仪2与相对湿度计算器4电性连接,显示相对湿度数据;所述相对湿度计算器4与第一气体检测室5中的电阻温度计11和第二气体检测室6中的电阻温度计11电连接,通过内置程序计算第一气体检测室5和第二气体检测室6相对湿度数据;所述第一气体检测室5中的电阻温度计11与露点温度显示仪3电连接,所述第二气体检测室6中的电阻温度计11与气体温度显示仪1电连接;所述半导体制冷器12上电连接有直流调节电源13;所述第一气体检测室5和第二气体检测室6内设有对露点镜10表面进行清洁的清洁机构27。所述第一气体检测室5和第二气体检测室6的内腔顶部均设有反射光敏电阻7、散射光敏电阻8和光源9,所述反射光敏电阻7、散射光敏电阻8经光电桥路14连接有放大器15,所述放大器15电连接有对比器16,所述对比器16与直流调节电源13电连接,所述直流调节电源13接收从对比器16传递的信号,并调节直流电流的大小,来控制半导体制冷器12的制冷量。其中光电桥路14,与反射光敏电阻7、散射光敏电阻8、放大器15相连,将接收的反射光敏电阻7、散射光敏电阻8的光信号转换为电信号,并将电信号传递给放大器15,反射光敏电阻7,安装在气体检测室内,接收露点镜10反射的光线,将光信号传递给与之相连的光电桥路14;Example: As shown in Figure 1 and Figure 2, a three-display HP-U dew point hygrometer of the present invention includes a gas temperature display device 1, a relative humidity display device 2, a dew point temperature display device 3, and a relative humidity calculator 4 , the first gas detection chamber 5 and the second gas detection chamber 6, and the intake pipe 26 connected with the first gas detection chamber 5 and the second gas detection chamber 6, the first gas detection chamber 5 and the second gas detection chamber 5 The bottom of the inner cavity of the chamber 6 is provided with a dew point mirror 10, the first gas detection chamber 5 and the second gas detection chamber 6 are provided with resistance thermometers 11, and the first gas detection chamber 5 is provided with a resistance thermometer 11. The semiconductor refrigerator 12 at the bottom of the dew point mirror, the gas temperature indicator 1 is electrically connected to the resistance thermometer 11 in the second gas detection chamber 6 to display temperature data; the relative humidity indicator 2 is electrically connected to the relative humidity calculator 4 connected to display relative humidity data; the relative humidity calculator 4 is electrically connected with the resistance thermometer 11 in the first gas detection chamber 5 and the resistance thermometer 11 in the second gas detection chamber 6, and calculates the first gas detection chamber through a built-in program 5 and the relative humidity data of the second gas detection chamber 6; the resistance thermometer 11 in the first gas detection chamber 5 is electrically connected to the dew point temperature indicator 3, and the resistance thermometer 11 in the second gas detection chamber 6 is connected to the gas temperature The display instrument 1 is electrically connected; the semiconductor refrigerator 12 is electrically connected with a DC regulating power supply 13; the first gas detection chamber 5 and the second gas detection chamber 6 are provided with a cleaning mechanism 27 for cleaning the surface of the dew point mirror 10 . The tops of the inner cavities of the first gas detection chamber 5 and the second gas detection chamber 6 are provided with a reflective photoresistor 7, a scattering photoresistor 8 and a light source 9. The reflective photoresistor 7 and the scattering photoresistor 8 pass through a photoelectric bridge circuit. 14 is connected to an amplifier 15, which is electrically connected to a comparator 16, and the comparator 16 is electrically connected to a DC regulating power supply 13, which receives the signal transmitted from the comparator 16 and regulates the amount of DC current. size, to control the cooling capacity of the semiconductor refrigerator 12. The photoelectric bridge circuit 14 is connected with the reflective photoresistor 7, the scattering photoresistor 8 and the amplifier 15, and converts the received optical signals of the reflective photoresistor 7 and the scattering photoresistor 8 into electrical signals, and transmits the electrical signals to the amplifier 15, The reflective photoresistor 7 is installed in the gas detection chamber, receives the light reflected by the dew point mirror 10, and transmits the optical signal to the photoelectric bridge circuit 14 connected to it;

所述的散射光敏电阻8,安装在气体检测室内,接收露点镜10散射的光线,将光信号传递给与之相连的光电桥路14;The scattering photoresistor 8 is installed in the gas detection chamber, receives the light scattered by the dew point mirror 10, and transmits the light signal to the photoelectric bridge circuit 14 connected to it;

所述的光源9,安装在气体检测室内,发射光线照射在露点镜10表面。露点镜10,安装在第一气体检测室5和第二气体检测室6内,与铂热电阻温度计11相连,接收光源9发出的光线进行反射或散射。放大器15,与光电桥路14和对比器16相连,接收从光电桥路14传递的电信号并将其放大,传递给对比器16;The light source 9 is installed in the gas detection chamber, and emits light on the surface of the dew point mirror 10 . The dew point mirror 10 is installed in the first gas detection chamber 5 and the second gas detection chamber 6 , and is connected with the platinum thermal resistance thermometer 11 , and receives the light emitted by the light source 9 for reflection or scattering. The amplifier 15, connected with the photoelectric bridge circuit 14 and the comparator 16, receives the electrical signal transmitted from the photoelectric bridge circuit 14, amplifies it, and transmits it to the comparator 16;

所述的直流调节电源13,与对比器16和半导体制冷器12相连,接收从对比器16传递的信号,调节直流电流的大小,来控制半导体制冷器12的制冷量;The DC regulating power supply 13 is connected with the comparator 16 and the semiconductor refrigerator 12, receives the signal transmitted from the comparator 16, and adjusts the magnitude of the DC current to control the cooling capacity of the semiconductor refrigerator 12;

所述的对比器16,与放大器15和直流调节电源13相连,将第一气体检测室5和第二气体检测室6传递出的经过转换放大的信号,通过内置分析器进行对比,将对比信号传递给直流调节电源13,并调节直流电流的大小,来控制半导体制冷器1212的制冷量。The comparator 16 is connected with the amplifier 15 and the DC power supply 13, and the converted and amplified signals transmitted from the first gas detection chamber 5 and the second gas detection chamber 6 are compared by the built-in analyzer, and the comparison signals are compared. It is transmitted to the DC regulating power supply 13, and the magnitude of the DC current is adjusted to control the cooling capacity of the semiconductor refrigerator 1212.

在第一气体检测室5和第二气体检测室6分别设置两组完全相同的光电系统。第一气体检测室5内的露点镜10下方安装半导体制冷器12,第一气体检测室5内的露点镜10下方无半导体制冷器12。在第一气体检测室5内随着半导体制冷器12制冷,露点镜10温度降低,达到露点温度时在镜面形成凝液,此时露点镜10表面有凝液和灰尘(如果被测气体足够洁净,露点镜10表面只有凝液);而第二气体检测室6内无温降,露点镜10表面仅有灰尘(如果被测气体足够洁净,露点镜10表面洁净无物)。因此在达到气体露点温度时,光源9照射在露点镜10表面将会产生不同的光电信号,通过安装在光电系统下游的对比器16对信号进行对比,来控制直流调节电源13,从而控制半导体制冷器12的制冷量。Two sets of identical photoelectric systems are installed in the first gas detection chamber 5 and the second gas detection chamber 6 respectively. A semiconductor refrigerator 12 is installed below the dew point mirror 10 in the first gas detection chamber 5 , and there is no semiconductor refrigerator 12 below the dew point mirror 10 in the first gas detection chamber 5 . In the first gas detection chamber 5, with the cooling of the semiconductor refrigerator 12, the temperature of the dew point mirror 10 decreases, and when the dew point temperature reaches the dew point temperature, condensate is formed on the mirror surface. However, there is no temperature drop in the second gas detection chamber 6, and there is only dust on the surface of the dew point mirror 10 (if the gas to be measured is clean enough, the surface of the dew point mirror 10 is clean and free). Therefore, when the dew point temperature of the gas is reached, different photoelectric signals will be generated when the light source 9 illuminates the surface of the dew point mirror 10. The signals are compared by the comparator 16 installed downstream of the photoelectric system to control the DC power supply 13, thereby controlling the semiconductor refrigeration. cooling capacity of the appliance 12.

在第一气体检测室5和第二气体检测室6的露点镜10下方安装电阻温度计11,测量露点温度和被测气体温度,并通过露点温度仪和气体温度显示仪1显示出来。将露点温度和气体温度分别与饱和水蒸气压相关联,通过相对湿度计算器4计算出相对湿度,在相对湿度显示仪2上显示出来。从而被测气体温度显示仪1、露点温度显示仪3、相对湿度显示仪2组成三显系统,可以实时读取相关数据,省时省力,简单方便。A resistance thermometer 11 is installed under the dew point mirror 10 in the first gas detection chamber 5 and the second gas detection chamber 6 to measure the dew point temperature and the temperature of the gas to be measured, and display them through the dew point thermometer and the gas temperature display device 1 . The dew point temperature and the gas temperature are respectively correlated with the saturated water vapor pressure, and the relative humidity is calculated by the relative humidity calculator 4 and displayed on the relative humidity display device 2 . Therefore, the measured gas temperature indicator 1, the dew point temperature indicator 3, and the relative humidity indicator 2 form a three-display system, which can read relevant data in real time, saving time and effort, and is simple and convenient.

在第一气体检测室5中由半导体制冷器12对检测室内的被测气体进行降温,在达到露点温度之前,两个露点镜10表面情况相同(洁净气体:露点镜10表面无物;污染气体:露点镜10表面有灰尘、纤维等),对光源9发出的光线照射在露点镜10表面,其反射、散射情况相同,两组光敏电阻接收到的光线信号一致,通过信号放大、对比后调大直流调节电源13的电流,增大制冷量,降低露点镜10温度;当第一气体检测室5内达到露点温度时气体中的水蒸汽凝结在露点镜10上,第二气体检测室6内无制冷器在露点镜10表面无凝结现象,两个露点镜10表面情况不同,对光线的反射、散射情况发生改变,光敏电阻接收到的光线信号改变,通过信号放大、对比后调小直流调节电源13的电流,减小制冷量,自动提高露点镜10温度;当不结露时,又自动降低露点镜10的温度,最后使露点镜10的温度达到动态平衡,此时温度即为被测气体的露点温度,由电阻温度计11测定露点温度并在露点温度显示仪3上显示出来。同时安装在第二气体检测室6内露点镜10下方的电阻温度计11测定温度即为被测气体温度,通过气体温度显示仪1显示出来。露点温度和气体温度信号传递到相对湿度计算器4,通过内置程序计算相对湿度数据,通过相对湿度显示仪2显示出来。In the first gas detection chamber 5, the temperature of the gas to be detected in the detection chamber is cooled by the semiconductor refrigerator 12. Before reaching the dew point temperature, the surface conditions of the two dew point mirrors 10 are the same (clean gas: nothing on the surface of the dew point mirror 10; polluted gas: The surface of the dew point mirror 10 has dust, fibers, etc.), and the light emitted by the light source 9 is irradiated on the surface of the dew point mirror 10, and its reflection and scattering are the same. DC adjusts the current of the power supply 13, increases the cooling capacity, and reduces the temperature of the dew point mirror 10; when the first gas detection chamber 5 reaches the dew point temperature, the water vapor in the gas condenses on the dew point mirror 10, and there is no gas in the second gas detection chamber 6. The refrigerator has no condensation phenomenon on the surface of the dew point mirror 10. The surface conditions of the two dew point mirrors 10 are different, the reflection and scattering of light change, and the light signal received by the photoresistor changes. After signal amplification and comparison, the DC power is adjusted down. 13 current, reduce the cooling capacity, and automatically increase the temperature of the dew point mirror 10; when there is no condensation, it will automatically reduce the temperature of the dew point mirror 10, and finally make the temperature of the dew point mirror 10 reach dynamic equilibrium, and the temperature at this time is the measured gas. The dew point temperature is measured by the resistance thermometer 11 and displayed on the dew point temperature indicator 3 . At the same time, the measured temperature of the resistance thermometer 11 installed under the dew point mirror 10 in the second gas detection chamber 6 is the measured gas temperature, which is displayed by the gas temperature display device 1 . The dew point temperature and gas temperature signals are transmitted to the relative humidity calculator 4 , and the relative humidity data is calculated by the built-in program and displayed through the relative humidity display device 2 .

本实用新型利用风机34将被测气体输送到第一气体检测室5和第二气体检测时内,并首先对露点镜10表面清理,确保露点镜10表面光洁,再对气体检测室进行吹扫,除去气体检测室原有气体;然后关闭出口控制阀23,继续充气至室内气体压力值达到100KPa,关闭风机34与进口控制阀25,密闭静置,稳定被测气体的压力,消除压力对测量结果的影响。如果气体中含有的灰尘、纤维等污染物会沉积在露点镜10表面。The utility model uses the fan 34 to transport the measured gas to the first gas detection chamber 5 and the second gas detection time, and firstly cleans the surface of the dew point mirror 10 to ensure that the surface of the dew point mirror 10 is smooth and clean, and then purges the gas detection chamber , remove the original gas in the gas detection chamber; then close the outlet control valve 23, continue to inflate until the indoor gas pressure value reaches 100KPa, close the fan 34 and the inlet control valve 25, close and stand, stabilize the pressure of the gas to be measured, and eliminate the pressure on the measurement impact on results. If dust, fibers and other pollutants contained in the gas will be deposited on the surface of the dew point mirror 10 .

所述进气管道26上连接有保护气体通入管道17,所述保护气体通入管道17的端部连接氮气储罐18,且所述保护气体通入管道17上设有氮气控制阀20。The air inlet pipe 26 is connected with a protective gas inlet pipe 17 , the end of the protective gas inlet pipe 17 is connected to the nitrogen storage tank 18 , and the protective gas inlet pipe 17 is provided with a nitrogen control valve 20 .

所述第一气体检测室5和第二气体检测室6上均设有对内部压力值检测的压力计21,检测第一气体检测室5和第二气体检测室6室内的压力值。The first gas detection chamber 5 and the second gas detection chamber 6 are both provided with a pressure gauge 21 for detecting the internal pressure value, to detect the pressure value in the first gas detection chamber 5 and the second gas detection chamber 6 .

所述第一气体检测室5和第二气体检测室6上均设有放气管22,所述放气管22上设有出口控制阀23,控制气体的流动状态。The first gas detection chamber 5 and the second gas detection chamber 6 are both provided with a gas release pipe 22, and an outlet control valve 23 is provided on the gas release pipe 22 to control the flow state of the gas.

所述进气管道26经输送支管24分别与第一气体检测室5和第二气体检测室6连接,且输送支管24上设有进口控制阀25。The intake pipe 26 is respectively connected with the first gas detection chamber 5 and the second gas detection chamber 6 through the delivery branch pipe 24 , and the delivery branch pipe 24 is provided with an inlet control valve 25 .

所述进气管道26的进器端设有风机34。A fan 34 is provided at the inlet end of the air inlet duct 26 .

所述清洁机构27包括设置在露点镜10外围的基板33,所述基板33上设有一对平行设置的往复丝杆28和限位光杆29,所述往复丝杆28上设有沿往复丝杆28往复运动的滑块30,所述限位光杆29上设有沿限位光杆29移动的限位滑套31,所述滑块30与限位滑套31安装有对露点镜10表面清洁的刮板32,其中往复丝杆28由电机驱动,在仪器使用之前,打开清洁机构27对露点镜表面的污垢进行清理,确保本次测量的准确性。在测量完之后再打开清洁机构27对露点镜表面的污垢进行清理,确保背刺测量不污染露点镜,确保下次测量的准确,通过往复丝杆带动刮板32往复运动来对对露点镜表面进行清洁。The cleaning mechanism 27 includes a base plate 33 arranged on the periphery of the dew point mirror 10 . 28 Reciprocating sliding block 30, the limiting polished rod 29 is provided with a limiting sliding sleeve 31 that moves along the limiting polished rod 29, the sliding block 30 and the limiting sliding sleeve 31 are installed with a cleaning device for the surface of the dew point mirror 10. Scraper 32, wherein the reciprocating screw 28 is driven by a motor, before the instrument is used, open the cleaning mechanism 27 to clean the dirt on the surface of the dew point mirror to ensure the accuracy of this measurement. After the measurement, open the cleaning mechanism 27 to clean the dirt on the surface of the dew point mirror to ensure that the backstab measurement does not contaminate the dew point mirror and ensure the accuracy of the next measurement. The reciprocating screw drives the scraper 32 to reciprocate to clean the dew point mirror surface to clean.

最后应说明的是:以上仅为本实用新型的优选实施例而已,并不用于限制本实用新型,尽管参照前述实施例对本实用新型进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本实用新型的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本实用新型的保护范围之内。Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, its The technical solutions described in the foregoing embodiments can still be modified, or some technical features thereof can be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (7)

1.一种三显HP-U露点湿度计,包括气体温度显示仪(1)、相对湿度显示仪(2)、露点温度显示仪(3)、相对湿度计算器(4)、第一气体检测室(5)和第二气体检测室(6),以及与第一气体检测室(5)和第二气体检测室(6)相连的进气管道(26),其特征在于:所述第一气体检测室(5)和第二气体检测室(6)的内腔底部设有露点镜(10),所述第一气体检测室(5)和第二气体检测室(6)内设有均设有电阻温度计(11),所述第一气体检测室(5)内设有安装在露点镜底部的半导体制冷器(12),所述气体温度显示仪(1)与第二气体检测室(6)中的电阻温度计(11)电连接;所述相对湿度显示仪(2)与相对湿度计算器(4)电性连接;所述相对湿度计算器(4)与第一气体检测室(5)中的电阻温度计(11)和第二气体检测室(6)中的电阻温度计(11)电连接;所述第一气体检测室(5)中的电阻温度计(11)与露点温度显示仪(3)电连接,所述第二气体检测室(6)中的电阻温度计(11)与气体温度显示仪(1)电连接;所述半导体制冷器(12)上电连接有直流调节电源(13);所述第一气体检测室(5)和第二气体检测室(6)内设有对露点镜(10)表面进行清洁的清洁机构(27),所述第一气体检测室(5)和第二气体检测室(6)的内腔顶部均设有反射光敏电阻(7)、散射光敏电阻(8)和光源(9),所述反射光敏电阻(7)、散射光敏电阻(8)经光电桥路(14)连接有放大器(15),所述放大器(15)电连接有对比器(16),所述对比器(16)与直流调节电源(13)电连接,所述直流调节电源(13)接收从对比器(16)传递的信号,并调节直流电流的大小,来控制半导体制冷器(12)的制冷量。1. A three-display HP-U dew point hygrometer, comprising a gas temperature indicator (1), a relative humidity indicator (2), a dew point temperature indicator (3), a relative humidity calculator (4), a first gas detector chamber (5) and a second gas detection chamber (6), and an air inlet pipe (26) connected with the first gas detection chamber (5) and the second gas detection chamber (6), characterized in that: the first gas detection chamber (5) and the second gas detection chamber (6) are connected A dew point mirror (10) is provided at the bottom of the inner cavity of the gas detection chamber (5) and the second gas detection chamber (6), and the first gas detection chamber (5) and the second gas detection chamber (6) are provided with a dew point mirror (10). A resistance thermometer (11) is provided, the first gas detection chamber (5) is provided with a semiconductor refrigerator (12) installed at the bottom of the dew point mirror, and the gas temperature indicator (1) is connected to the second gas detection chamber ( The resistance thermometer (11) in 6) is electrically connected; the relative humidity indicator (2) is electrically connected to the relative humidity calculator (4); the relative humidity calculator (4) is electrically connected to the first gas detection chamber (5). The resistance thermometer (11) in ) is electrically connected with the resistance thermometer (11) in the second gas detection chamber (6); the resistance thermometer (11) in the first gas detection chamber (5) is connected to the dew point temperature display instrument ( 3) Electrical connection, the resistance thermometer (11) in the second gas detection chamber (6) is electrically connected with the gas temperature display instrument (1); the semiconductor refrigerator (12) is electrically connected with a DC regulating power supply (13) ); the first gas detection chamber (5) and the second gas detection chamber (6) are provided with a cleaning mechanism (27) for cleaning the surface of the dew point mirror (10), and the first gas detection chamber (5) and the top of the inner cavity of the second gas detection chamber (6) are provided with a reflection photoresistor (7), a scattering photoresistor (8) and a light source (9), the reflection photoresistor (7), scattering photoresistor (8) An amplifier (15) is connected via the photoelectric bridge circuit (14), the amplifier (15) is electrically connected with a contrast device (16), and the contrast device (16) is electrically connected with a DC regulating power supply (13), and the DC regulating The power supply (13) receives the signal transmitted from the comparator (16), and adjusts the magnitude of the direct current to control the cooling capacity of the semiconductor refrigerator (12). 2.根据权利要求1所述的一种三显HP-U露点湿度计,其特征在于,所述进气管道(26)上连接有保护气体通入管道(17),所述保护气体通入管道(17)的端部连接氮气储罐(18),且所述保护气体通入管道(17)上设有氮气控制阀(20)。2. a kind of three-display HP-U dew point hygrometer according to claim 1, is characterized in that, described air inlet pipe (26) is connected with protective gas inlet pipe (17), described protective gas inlet The end of the pipeline (17) is connected to a nitrogen storage tank (18), and a nitrogen control valve (20) is provided on the protective gas inlet pipeline (17). 3.根据权利要求2所述的一种三显HP-U露点湿度计,其特征在于,所述第一气体检测室(5)和第二气体检测室(6)上均设有对内部压力值检测的压力计(21)。3. a kind of three-display HP-U dew point hygrometer according to claim 2, is characterized in that, described first gas detection chamber (5) and second gas detection chamber (6) are all provided with internal pressure Pressure gauge (21) for value detection. 4.根据权利要求2所述的一种三显HP-U露点湿度计,其特征在于,所述第一气体检测室(5)和第二气体检测室(6)上均设有放气管(22),所述放气管(22)上设有出口控制阀(23)。4. a kind of three-display HP-U dew point hygrometer according to claim 2, is characterized in that, described first gas detection chamber (5) and second gas detection chamber (6) are all provided with vent pipe ( 22), an outlet control valve (23) is provided on the air release pipe (22). 5.根据权利要求2所述的一种三显HP-U露点湿度计,其特征在于,所述进气管道(26)经输送支管(24)分别与第一气体检测室(5)和第二气体检测室(6)连接,且输送支管(24)上设有进口控制阀(25)。5. a kind of three-display HP-U dew point hygrometer according to claim 2, is characterized in that, described air inlet duct (26) is respectively connected with first gas detection chamber (5) and the first gas detection chamber (5) and the first gas detection chamber (5) and the first gas detection chamber (5) and the first gas detection chamber (5) through the conveying branch pipe (24) respectively. The two gas detection chambers (6) are connected, and an inlet control valve (25) is arranged on the conveying branch pipe (24). 6.根据权利要求1所述的一种三显HP-U露点湿度计,其特征在于,所述进气管道(26)的进器端设有风机(34)。6 . The three-display HP-U dew point hygrometer according to claim 1 , wherein a fan ( 34 ) is provided at the inlet end of the air intake duct ( 26 ). 7 . 7.根据权利要求1所述的一种三显HP-U露点湿度计,其特征在于,所述清洁机构(27)包括设置在露点镜(10)外围的基板(33),所述基板(33)上设有一对平行设置的往复丝杆(28)和限位光杆(29),所述往复丝杆(28)上设有沿往复丝杆(28)往复运动的滑块(30),所述限位光杆(29)上设有沿限位光杆(29)移动的限位滑套(31),所述滑块(30)与限位滑套(31)安装有对露点镜(10)表面清洁的刮板(32)。7. A three-display HP-U dew point hygrometer according to claim 1, wherein the cleaning mechanism (27) comprises a substrate (33) arranged on the periphery of the dew point mirror (10), and the substrate ( 33) A pair of parallel reciprocating screw rods (28) and limit polished rods (29) are provided on the reciprocating screw rod (28), and a slider (30) reciprocating along the reciprocating screw rod (28) is provided on the reciprocating screw rod (28), A limit sliding sleeve (31) that moves along the limit polished rod (29) is provided on the limit polished rod (29), and a dew point mirror (10) is installed on the slider (30) and the limit sliding sleeve (31). ) surface cleaning scraper (32).
CN202122608298.2U 2021-10-28 2021-10-28 Three show HP-U dew point hygrometer Expired - Fee Related CN216386860U (en)

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