阅读说明：本技术 一种预冷凝式湿度发生器 (A kind of preliminary condensation formula humidity generator ) 是由 吕国义 胡艳青 左勇 任红磊 官志坚 于 2019-09-02 设计创作，主要内容包括：本发明公开的一种预冷凝式湿度发生器,属于计量测试技术领域。本发明包括气体管路、第一级湿度饱和器、恒温槽、冷媒、空气压缩机。还包括预冷凝室。所述空气压缩机、入口管路、预冷凝室、第一级湿度饱和器依次连通,预冷凝室置于恒温槽的冷媒的外部。各级湿度饱和器均放置在恒温槽的冷媒中。由于设置预冷凝室,使得入口管路始终处于0℃以上,从而避免在第一级湿度饱和器入口管路内结霜,形成冰堵。预冷凝室采用绝热的憎水材料,能够降低预冷凝室与第一级湿度饱和器之间的热量交换,延缓结霜的速度。为进一步延长预冷凝室由于结霜而形成冰堵的时间,预冷凝室为圆柱型设计,其直径为入口管路的10倍以上。本发明具有结构简单,成本低的优点。(A kind of preliminary condensation formula humidity generator disclosed by the invention, belongs to metrological testing technology field.The present invention includes gas piping, first order moisture-saturated device, thermostat, refrigerant, air compressor.It further include precondenser chamber.The air compressor, entrance pipe, precondenser chamber, first order moisture-saturated device are sequentially communicated, and precondenser chamber is placed in the outside of the refrigerant of thermostat.Moisture-saturated devices at different levels are both placed in the refrigerant of thermostat.Since precondenser chamber is arranged, so that entrance pipe is in 0 DEG C or more always, to avoid the frosting in first order moisture-saturated device entrance pipe, it is stifled to form ice.Using the hydrophobic material being insulated, the heat that can reduce between precondenser chamber and first order moisture-saturated device exchanges precondenser chamber, delays the speed of frosting.The ice stifled time is formed further to extend precondenser chamber due to frosting, precondenser chamber is cylindrical design, 10 times or more of a diameter of entrance pipe.The advantage that the present invention has structure simple, at low cost.)

1. a kind of preliminary condensation formula humidity generator, it is characterised in that: including entrance pipe (1), first order moisture-saturated device (3), Thermostat (4), refrigerant (5), air compressor (6)；It further include precondenser chamber (2)；The air compressor (6), entrance pipe (1), precondenser chamber (2), first order moisture-saturated device (3) are sequentially communicated, and precondenser chamber (2) is placed in the refrigerant (5) of thermostat (4) Outside；Moisture-saturated devices at different levels are both placed in the refrigerant (5) of thermostat (4)；Since precondenser chamber (2) are arranged, so that entering Mouth pipeline (1) is in 0 DEG C or more always, to avoid frosting, formation ice in first order moisture-saturated device entrance pipe stifled.

2. a kind of preliminary condensation formula humidity generator as described in claim 1, it is characterised in that: precondenser chamber (2) is using insulation Hydrophobic material, the heat that can reduce between precondenser chamber (2) and first order moisture-saturated device (3) exchanges, and delays frosting Speed.

3. a kind of preliminary condensation formula humidity generator as claimed in claim 1 or 2, it is characterised in that: further to extend pre-cooling Solidifying room forms the ice stifled time due to frosting, and precondenser chamber (2) is cylindrical design, and the 10 of a diameter of entrance pipe (1) Times or more.

4. a kind of preliminary condensation formula humidity generator as claimed in claim 3, it is characterised in that: it is required according to gage work, if The output gas humidity dew point temperature value for setting humidity generator, at this point, the thermostat temperature of moisture-saturated device is that output gas is wet Spend dew point temperature value；The gas that the air compressor (6) generates passes sequentially through gas piping (1), precondenser chamber (2), first Grade moisture-saturated device (3) and other moisture-saturated devices；First order moisture-saturated device (3) and other moisture-saturated devices are both placed in perseverance In the refrigerant (5) of warm slot, the temperature value of first order moisture-saturated device (3) and other moisture-saturated devices is output gas humidity dew Point temperature value；When the temperature of moisture-saturated device is 0 DEG C or less, the first order is accessed again after accessing precondenser chamber due to entrance pipe Moisture-saturated device so that entrance pipe (1) always be in 0 DEG C or more, in entrance pipe will not frosting, to avoid in inlet tube It is stifled that ice is formed in road (1)；Precondenser chamber made of hydrophobic material using insulation (2) is placed in the outside of the refrigerant (5) of thermostat, Precondenser chamber (2) temperature is higher than the temperature of first order moisture-saturated device (3), and its inner space is very big, to generate two Good effect: first is that delaying the speed of frosting in precondenser chamber, second is that extending precondenser chamber (2) forms what ice blocked up due to frosting Time, the interior ice that not will form blocks up at work.

Technical field

The present invention relates to a kind of psychrometry test devices, more particularly to one kind for 0 DEG C or less dew-point temperature to occur The humidity generator of gas belongs to metrological testing technology field.

Background technique

Humidity generator is widely used measuring equipment during calibrating or calibration moisture instruments.It is wet for standard Generator is spent, wherein moisture-saturated device is the critical component in humidity generator, usually using thermally conductive good metal material system It is connected in series at moisture-saturated device, and using multistage moisture-saturated device.It is exactly that oversaturated gas is passed through humidity that it, which is acted on, Saturator reaches the steam-laden at a certain temperature.That is, gas can neither be supersaturated, it can not undersaturation.

For the dual-temperature process standard humidity generator that can produce low dew point, the gas dew point value of usually its output is exactly The temperature value of moisture-saturated device.For the gas of 0 DEG C or less humidity occurs, -30 DEG C or less dewpoint humidity values especially occur, by The vapor contained in the air of air compressor output is more, and the temperature of moisture-saturated device is lower at this time, will be the Level-one moisture-saturated device entrance pipe inner surface frosting.With the flowing of gas, in first order moisture-saturated device entrance pipe The frost layer of surface knot is more and more thicker, finally that first order moisture-saturated device entrance pipe is completely plugged, forms ice and blocks up, so that humidity Generator can not work.

In order to solve this problem, there are two types of currently used schemes, a kind of scheme is before first order moisture-saturated device Face is provided with a gas-drying apparatus, wet since the temperature of saturator is at 0 DEG C or more when 0 DEG C or more dewpoint humidity value occurs Degree saturator inlet tube interior surface is not in frosting situation, and it is full that the air of air compressor output is directly entered first order humidity And device；When 0 DEG C or less dewpoint humidity value occurs, the air of air compressor output initially enters gas-drying apparatus, air warp It crosses drying and enters back into first order moisture-saturated device later, this scheme is the problem is that need frequent replacement drier, separately Outside, how to judge that drier failure needs working experience abundant.Another scheme be use relatively dry high pressure gas cylinder as Gas source, this scheme is the problem is that use high pressure gas cylinder as gas source higher cost, and replacement gas cylinder is cumbersome, and when needs The stifled generation of ice is still suffered from there is a situation where -50 DEG C and when following dewpoint humidity value.

Summary of the invention

In order to solve the problems, such as that ice is stifled in first order moisture-saturated device entrance pipe, a kind of preliminary condensation disclosed by the invention Formula humidity generator technical problems to be solved are made of: setting is using the hydrophobic material being insulated before first order moisture-saturated device Precondenser chamber.Since precondenser chamber is arranged between first order moisture-saturated device and entrance pipe, so that into entrance pipe Gas temperature be in 0 DEG C or more always, will not be in moisture-saturated device entrance pipe inner surface frosting.And the precondenser chamber being arranged Temperature is higher than the temperature of first order moisture-saturated device, and its inner space is very big, to generate two good effects: first is that energy Enough delay the speed of frosting in precondenser chamber, second is that extending precondenser chamber forms the ice stifled time due to frosting.Present invention tool Have that structure is simple, advantage at low cost.

The purpose of the present invention is what is be achieved through the following technical solutions.

A kind of preliminary condensation formula humidity generator disclosed by the invention, including gas piping, first order moisture-saturated device, constant temperature Slot, refrigerant, air compressor.It further include precondenser chamber.The air compressor, entrance pipe, precondenser chamber, first order humidity Saturator is sequentially communicated, and precondenser chamber is placed in the outside of the refrigerant of thermostat.Moisture-saturated devices at different levels are both placed in thermostat In refrigerant.Since precondenser chamber is arranged, so that entrance pipe is in 0 DEG C or more always, to avoid in moisture-saturated device entrance It is stifled to form ice for frosting in pipeline.

Preferably, precondenser chamber can reduce precondenser chamber and first order moisture-saturated using the hydrophobic material of insulation Heat exchange between device, delays the speed of frosting.

Preferably, forming the ice stifled time due to frosting further to extend precondenser chamber, precondenser chamber is cylinder Type design, 10 times or more of a diameter of entrance pipe.

The working method of a kind of preliminary condensation formula humidity generator disclosed by the invention are as follows: required, be arranged according to gage work The output gas humidity dew point temperature value of humidity generator, at this point, the thermostat temperature of moisture-saturated device is output gas humidity Dew point temperature value.Gas passes sequentially through gas piping, precondenser chamber, first order moisture-saturated device and other moisture-saturated devices.The Level-one moisture-saturated device and other moisture-saturated devices are both placed in the refrigerant of thermostat, made of the hydrophobic material using insulation Precondenser chamber is placed in the outside of the refrigerant of thermostat, and precondenser chamber temperature is higher than the temperature of first order moisture-saturated device, so that entering Mouth pipeline is in 0 DEG C or more always.When the output gas humidity dew point temperature value of humidity generator is 0 DEG C or less, due to entering Mouth pipeline connection is precondenser chamber, is not coupled with first order moisture-saturated device directly, so that the gas in entrance pipe exists Its temperature is in 0 DEG C or more always before into precondenser chamber, entrance pipe inner surface will not frosting, to avoid in entrance pipe Interior formation ice is stifled.And precondenser chamber and its inner space is very big, to produce two good effects: first is that delaying precondenser chamber The speed of interior frosting, second is that extending precondenser chamber forms the ice stifled time due to frosting, it is interior at work not will form ice It is stifled.

The utility model has the advantages that

1, a kind of preliminary condensation formula humidity generator disclosed by the invention, entrance pipe are changed by access first order moisture-saturated device To access precondenser chamber, precondenser chamber is placed in the outside of refrigerant in thermostat, since entrance pipe is full not with first order humidity Directly be connected with device so that entrance pipe is in 0 DEG C or more always, in pipeline will not frosting, to avoid wet in the first order It is stifled to spend formation ice in saturator entrance pipe.

2, a kind of preliminary condensation formula humidity generator disclosed by the invention, precondenser chamber use the hydrophobic material of insulation, thus Further delay the speed of frosting in precondenser chamber.

3, a kind of preliminary condensation formula humidity generator disclosed by the invention, precondenser chamber is cylindrical design, it is a diameter of enter 10 times or more of mouth pipeline are formed in precondenser chamber due to frosting since precondenser chamber inner space is larger to extend The ice stifled time, the interior ice that not will form blocks up at work.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of humidity generator of the present invention.

Wherein: 1-entrance pipe, 2-precondenser chambers, 3-first order moisture-saturated devices, 4-thermostats, 5-refrigerants, 6-air compressors.

Specific embodiment

Objects and advantages in order to better illustrate the present invention with reference to the accompanying drawing do further summary of the invention with example Explanation.

By taking the humidity generator of three-level moisture-saturated device structure as an example.

As shown in Figure 1, a kind of preliminary condensation formula humidity generator disclosed in the present embodiment, including gas piping 1, the first order are wet Spend saturator 3, thermostat 4, refrigerant 5, air compressor 6.It further include precondenser chamber 2.The air compressor 6, entrance pipe 1, precondenser chamber 2, first order moisture-saturated device 3 are sequentially communicated, and precondenser chamber 2 is placed in the outside of the refrigerant 5 of thermostat 4.It is at different levels Moisture-saturated device is both placed in the refrigerant 5 of thermostat 4.Since precondenser chamber 2 is arranged, so that entrance pipe 1 is in 0 DEG C always More than, to avoid the frosting in first order moisture-saturated device entrance pipe, it is stifled to form ice.Precondenser chamber 2 is hated using insulation Water material, the heat that can reduce between precondenser chamber 2 and first order moisture-saturated device 3 exchange, and delay the speed of frosting.For into One step extends precondenser chamber and forms the ice stifled time due to frosting, and precondenser chamber 2 is cylindrical design, a diameter of inlet tube 10 times or more of road 1.

It is in 6mm stainless steel gas piping 1, then by polytetrafluoro that air is input to outer diameter by air compressor 6 The precondenser chamber 2 of vinyl material production, 2 inner cavity of precondenser chamber are designed as the cylindrical type of diameter 80mm, and air passes through precondenser chamber 2 Enter back into first order moisture-saturated device 3.Precondenser chamber 2 is placed in thermostat 4 using alcohol as the outside of refrigerant 5, precondenser chamber 2 Temperature between moisture-saturated device 3 and environment temperature.First order moisture-saturated device 3 is placed in alcohol refrigerant 5 in thermostat 4 Inside, temperature are identical as the temperature of refrigerant 5.Since stainless steel gas piping 1 is in 0 DEG C or more, and precondenser chamber 2 always Inner space is larger, and it is stifled not will form ice within the gage work time.It is full in first order humidity in humidity generator to solve The stifled problem with formation ice in device entrance pipe 1.

Above-described specific descriptions have carried out further specifically the purpose of invention, technical scheme and beneficial effects It is bright, it should be understood that the above is only a specific embodiment of the present invention, the protection model being not intended to limit the present invention It encloses, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention Protection scope within.