WO2019100530A1 - 一种气体恒温装置及检测系统 - Google Patents

一种气体恒温装置及检测系统 Download PDF

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Publication number
WO2019100530A1
WO2019100530A1 PCT/CN2017/119931 CN2017119931W WO2019100530A1 WO 2019100530 A1 WO2019100530 A1 WO 2019100530A1 CN 2017119931 W CN2017119931 W CN 2017119931W WO 2019100530 A1 WO2019100530 A1 WO 2019100530A1
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Prior art keywords
gas
temperature
heat conducting
chamber
gas path
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PCT/CN2017/119931
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English (en)
French (fr)
Inventor
姜允中
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济南兰光机电技术有限公司
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Priority claimed from CN201711175139.XA external-priority patent/CN107894795A/zh
Priority claimed from CN201721571879.0U external-priority patent/CN207488852U/zh
Application filed by 济南兰光机电技术有限公司 filed Critical 济南兰光机电技术有限公司
Publication of WO2019100530A1 publication Critical patent/WO2019100530A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature

Definitions

  • the invention relates to a gas thermostat device and a detection system.
  • the barrier properties of packaging materials to gases directly determine the shelf life of their contents.
  • the barrier property of the packaging material is tested to determine whether the material is acceptable, it is generally detected at a certain set temperature.
  • the testing equipment is working, only the test temperature in the equipment is concerned, and the temperature of the gas flowing into the equipment is often ignored.
  • the gas is not processed into the equipment, and the test temperature in the equipment is inconsistent, causing temperature fluctuations in the detection instrument and affecting the detection accuracy.
  • the time for the gas to enter the equipment is short, the equipment is difficult to detect the temperature of the mixed gas, and the gas cannot be treated to the same temperature as the equipment test environment.
  • the temperature difference affects the stability of the device detection, resulting in inaccurate test results.
  • the accuracy of the temperature control of the gas around the sample directly affects the detection accuracy of the instrument.
  • the sample to be tested is placed in the middle of the upper and lower test chambers to control the temperature of the upper and lower chambers.
  • the temperature control of the water bath, the temperature control of the oil bath, the test chamber can be placed in the constant temperature chamber, and the temperature control precision is also high.
  • the same device is provided with multiple sets of upper and lower chambers for simultaneous testing. Temperature control of multiple sets of test chambers often takes into account the volume, structure, temperature control effect and ease of operation. In the past, the temperature control method was often used for multiple sets of test chambers, which was bulky, complicated in structure and troublesome to operate.
  • the lower chamber heating or cooling temperature control is generally adopted.
  • the upper chamber relies on the lower chamber to conduct heat to maintain the temperature.
  • the thickness of the sample between the upper and lower chambers is different, the thermal conductivity is different, the temperature of the upper chamber is uncertain, and there is a temperature difference between the two chambers. There is a temperature difference on both sides of the sample, or the temperature on both sides is unstable, resulting in inaccurate detection.
  • the present invention proposes a gas thermostat device and a detection system: when the gas enters the device or reaches the test sample, certain measures are taken to improve the control precision of the gas temperature around the sample;
  • the invention solves the problem that the temperature in the gas transmission process or before entering the detecting device is unstable and uncontrollable.
  • a gas thermostat device comprising a heat conducting element disposed outside the gas path of the detecting device, the heat conducting element being coupled to the heating or/and cooling element, utilizing the conduction of the temperature provided by the heat conducting element to the heating or/and the cooling element, to achieve the entire The temperature of the gas path is uniform and constant.
  • the gas path in the present invention includes, but is not limited to, a gas supply path to the gas supply path of the detecting device, an intake gas path of the detecting device or/and a conveying gas path inside the detecting device, and the like.
  • the gas thermostat device specifically includes a first heat conduction element and a second heat conduction element, and the first heat conduction element is provided with an intake air path connecting the gas source and the detection device, and the first heat conduction element is internally A heating or/and cooling element is provided to keep the temperature of the gas uniform throughout the gas path constant.
  • the air path has an additional extension length on the first heat conducting element, the outer side of the first heat conducting element and the gas path encloses a second heat conducting element, and the outer side of the second heat conducting element is wrapped with a heat insulating structure.
  • the first heat conducting element is a columnar structure, and the gas path is spirally wound on the first heat conducting element.
  • the gas path is arranged on the first heat conducting element.
  • the second heat conducting component is a cylindrical structure wrapped around the outside of the first heat conducting component.
  • the gas thermostat further includes a housing accommodating the first heat conducting element and the second heat conducting element to form a separate constant temperature space.
  • the surface of the first heat conducting component is provided with a groove, and the groove is matched with the outer surface of the gas path to ensure that the gas path is tightly fixed in the groove.
  • the heat insulating structure adopts a material not lower than the thermal conductivity of the nylon material, and the thickness is not less than 3 mm. It can also be used as a mounting fixture.
  • the first heat conducting component is machined with a blind hole in the center, and a heating/cooling component is installed in the blind hole, and the aperture size is consistent with the size of the heat generating/cooling component.
  • a temperature sensor is arranged outside the gas path, and the temperature sensor is further connected with a temperature control system for detecting and controlling the ambient temperature of the gas path.
  • first heat conducting element, the second heat conducting element and the gas path are both thermally conductive materials, preferably copper.
  • thermally conductive materials preferably copper.
  • those skilled in the art can replace the materials with other materials such as gold, carbon fiber and the like with good thermal conductivity under the working principle of the present invention. These should be a regular replacement.
  • the effective winding length of the gas path is not less than 500 mm, and can be increased according to an increase in gas flow rate.
  • a detection system is provided with a gas thermostat as described above between a detection device and a gas source.
  • the detecting device is a test cavity
  • the test chamber is provided with a thermostat device, including a conductive sleeve disposed outside the test cavity, and the conductive sleeve is disposed Heating or / and cooling components.
  • the test chamber includes an upper chamber and a lower chamber.
  • the sample is located between the upper and lower chambers, and the outer side of the upper chamber is surrounded by a conductive sleeve, and the conductive sleeve is closely attached to the lower chamber.
  • a sealing ring is arranged between the upper chamber and the lower chamber, a first temperature detecting element is disposed on the upper chamber, and a second temperature detecting element and a heating or/and cooling element are disposed in the lower chamber.
  • a pressing member is disposed above the upper cavity, and the pressing member passes through the conductive sleeve and is connected with the supporting member disposed outside the conductive sleeve, and the conductive sleeve and the upper portion are simultaneously supported by the supporting member and the pressing member.
  • the cavity is closely attached to the lower cavity, and the sealing ring is fitted between the upper cavity and the lower cavity to form a closed space to ensure the sealing property around the sealed sample.
  • the first temperature detecting element and the second temperature detecting element are respectively externally connected to the temperature controller to precisely control the temperature of the upper and lower chambers to ensure that the temperature around the sample placed in the test chamber is constant.
  • the first temperature detecting element and the second temperature detecting element are temperature sensors.
  • the pressing member and the supporting member are connected by screwing, and by pressing the pressing member, the degree of pressing between the upper chamber and the lower chamber can be adjusted.
  • An elastic member is disposed on the pressing member between the conductive sleeve and the support member.
  • the elastic element is a spring.
  • the pressing member is a cylinder rod or an electric cylinder rod or a hydraulic cylinder rod.
  • a material barrier testing device includes a test chamber provided with a constant temperature structure to maintain a uniform temperature throughout the detection process. Or the gas thermostat described above is also disposed on the transmission path between the gas source and the test chamber.
  • the outer wall of the first heat-conducting element is processed with a spiral groove conforming to the outer shape of the gas path, so that the gas path is tightly wound in the groove, so that the two are substantially free of gaps, and the temperature control precision of the gas is further improved;
  • the overall structure When applied to the barrier test, the overall structure is compact, easy to operate and assemble, and solves the problem of unstable temperature around the sample in the test cavity, ensuring stable test environment and improving detection accuracy.
  • Figure 1 is a schematic view of the principle of the present invention
  • Figure 2 is a schematic view of another principle of the present invention.
  • Figure 3 is an external view of the structure of the present invention.
  • Figure 4 is an internal cross-sectional view of the present invention.
  • Figure 5 is a schematic view showing the structure of the present invention when applied to a barrier test
  • Insulation layer 2. Copper sleeve, 3. Copper core, 4. Temperature sensor, 5. Heating rod, 6. Copper tube, 7. Lower chamber, 8. Sample, 9. Seal ring, 10. Upper chamber, 11. Conductive sleeve, 12. compression member, 13. support member, 14. first temperature sensor, 15. second temperature sensor, 16. heating or/and refrigeration element.
  • orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely a relative relationship for the purpose of describing the structural relationship of the components or components of the present invention, and is not specifically referring to any component or component of the present invention, and may not be construed as a Limitations of the invention.
  • the present application proposes a Gas thermostat.
  • a thermostat 1-2 can be disposed on the gas line 1-3 between the detecting device 1-1 and the gas source 1-4 to ensure a constant gas during the transmission process before the detection, and the gas is maintained. density.
  • a thermostat 1-2, a package detecting device 1-1, and a gas line 1-3 may be disposed outside the detecting device 1-1 and the gas line 1-3 to improve the circumference of the sample.
  • the control accuracy of the gas temperature ensures that the gas is constant during the detection and during the transmission, maintaining the gas density.
  • the thermostat 1-2 may be disposed outside the air source 1-4, the detecting device 1-1, and the gas line 1-3.
  • the thermostat 1-2 may be integrated or They are split, respectively, on the outside of different structures to ensure that the gas is constant throughout the entire process, maintaining gas density. This type of insulation is better, but it requires a higher input cost.
  • a gas thermostat includes a copper tube 6 for gas circulation; the copper tube 6 is uniformly spirally wound around the cylindrical copper core 3, outside the copper core 3 There is a copper sleeve 2, and the copper sleeve 2 has an insulation structure 1.
  • the copper tube 6, the copper core 3 and the copper sleeve 2 can be regarded as an integral structure.
  • Copper tube 6, copper core 3 and copper sleeve 2 are made of pure copper.
  • the outer wall of the copper core 3 is machined with a spiral groove having the same outer shape as that of the copper tube 6, so that the copper is tightly wound in the groove so that the two are substantially free of gaps.
  • the effective winding length of the copper tube 6 is not less than 500 mm, which can be increased according to the increase of the gas flow rate.
  • the copper sleeve 2 and the copper core 3 are assembled by an interference fit, and after the assembly is completed, they are closely attached together.
  • the thermal insulation structure adopts the thermal insulation layer 1, which is a material not lower than the thermal conductivity of the nylon material, and the thickness is not less than 3 mm. It can also be used as a mounting fixture.
  • the cylindrical copper core 3 is machined with a blind hole for mounting the heating rod 5, and the aperture size is the same as that of the heating rod 5.
  • a cooling element may be provided in the blind hole to maintain the temperature as required to replace the heating rod 5.
  • the heating rod 5 and the refrigerating element can be provided at the same time to better maintain a constant temperature to meet the detection requirements and the accuracy of the control.
  • the copper core 3 is equipped with a temperature sensor 4 near the spiral copper tube 6, and the temperature sensor 4 is also externally connected with a temperature control system for detecting and controlling the ambient temperature of the copper core 3.
  • the copper tube 6 is tightly and evenly wound in the spiral groove on the copper core 3, and the copper sleeve 2 is placed on the copper core 3, and the two are tightly fitted.
  • the heating rod 5 is installed in the center of the copper core 3, and the temperature sensor 4 is installed in the copper core 3 near the copper tube 6, and a temperature control table is connected to detect the ambient temperature of the copper core 3, thereby controlling the heating operation of the heating rod 5.
  • the gas source inlet of the device is connected to the gas outlet to be detected, and the gas source outlet of the device is directly connected to the inlet of the gas detecting device, and there is no exposed pipeline between the thermostat device and the gas detecting device.
  • the copper core 3 is heated and controlled by the sensor 4 and the heating rod 5.
  • the copper tube 6 is uniformly zigzag wound on the cylindrical copper core 3.
  • the copper tube 6 is evenly serpentine wound around the cylindrical copper core 3.
  • the temperature affects the fluidity of the gas molecules and also the barrier properties of the material to the gas.
  • the temperature control accuracy directly affects the detection accuracy of the instrument.
  • the sample to be tested 8 is placed in the middle of the upper and lower test chambers, and the upper and lower chambers 7 are temperature-controlled.
  • the temperature control of the water bath, the temperature control of the oil bath, the test chamber can be placed in the constant temperature chamber, and the temperature control precision is also high.
  • the same device is provided with multiple sets of upper and lower chambers 7 for simultaneous testing. Temperature control of multiple sets of test chambers often takes into account the volume, structure temperature control effect and ease of operation.
  • the temperature control method was often used for multiple sets of test chambers, which was bulky, complicated in structure and troublesome to operate.
  • the heating or cooling temperature control of the lower chamber 7 is generally adopted.
  • the upper chamber 10 conducts heat by the lower chamber 7 to maintain the temperature.
  • the sample 8 between the upper and lower chambers 7 is different in thickness and thickness, and the thermal conductivity is different, and the temperature of the upper chamber 10 is uncertain.
  • There is a temperature difference between the cavities there is a temperature difference on both sides of the sample 8, or the temperature on both sides is unstable, resulting in inaccurate detection.
  • the detecting device is a test chamber, and the test chamber is provided with a thermostat device, including a conductive sleeve 11 wrapped around the outside of the test chamber, and the conductive sleeve 11 is provided with heating or/and Refrigeration element 16.
  • the test chamber includes an upper chamber 10 and a lower chamber 7, the sample 8 being located between the upper and lower chambers 7, the outer chamber 10 being surrounded by a conductive sleeve 11, and the conductive sleeve 11 being in close contact with the lower chamber 7.
  • a sealing ring 9 is disposed between the upper chamber 10 and the lower chamber 7.
  • the upper chamber 10 is provided with a first temperature detecting element
  • the lower chamber 7 is provided with a second temperature detecting element and a heating or/and cooling element 16.
  • a pressing member 12 is disposed above the upper chamber 10, and the pressing member 12 passes through the conducting sleeve 11 and is connected with the supporting member 13 disposed outside the conductive sleeve 11, and is supported by the cooperation of the supporting member 13 and the pressing member 12.
  • the sleeve 11 and the upper chamber 10 abut against the lower chamber 7, and the sealing ring 9 is fitted between the upper chamber 10 and the lower chamber 7, forming a closed space to ensure the sealing property around the sealed sample 8.
  • the first temperature detecting element and the second temperature detecting element are respectively externally connected to the temperature controller to precisely control the temperatures of the upper and lower chambers 7 to ensure that the temperature around the sample 8 placed in the test chamber is constant.
  • the first temperature detecting element and the second temperature detecting element are temperature sensors.
  • the compression member 12 and the support member 13 are screwed together, and by rotating the pressing member 12, the degree of compression between the upper chamber 10 and the lower chamber 7 can be adjusted.
  • An elastic member is provided on the pressing member 12 between the conductive sleeve 11 and the support member 13.
  • the elastic element is a spring.
  • the pressing member 12 is a cylinder rod or an electric cylinder rod or a cylinder rod.

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Abstract

一种气体恒温装置（1-2）及检测系统，气体恒温装置（1-2）设置于气源（1-4）和气体检测设备（1-1）之间的传输路径上，包括包裹传输路径的导热元件和设置于导热元件内的加热或/和制冷元件。气体进入气体检测设备（1-1）前，或达到试样（8）时，采取一定措施，提高试样（8）周围气体温度的控制精度。解决了气体检测设备（1-1）进气温度不可控的问题，避免了由进气温度不恒定导致的仪器检测精度不佳。

Description

一种气体恒温装置及检测系统 技术领域
本发明涉及一种气体恒温装置及检测系统。
背景技术
温度对气体分子的运动速率影响很大，也极易影响薄膜片材对气体的阻隔性，在食品、药品、化妆品等包装行业，包装材料对气体的阻隔性，直接决定其内容物的保质期。检测包装材料的阻隔性以判定材料是否合格时，一般在某设定温度下检测。但目前检测设备工作时，只关注设备内的测试温度，往往忽略流入设备的气体温度。气体未做任何处理进入设备，与设备内的测试温度不一致，造成检测仪器内温度波动，影响检测精度。尤其是当气体不停地流经设备循环再排出时，气体进入设备的时间短，设备很难检测到混合后的气体的温度，更无法将气体处理到与设备测试环境同样的温度，设备控温差，影响设备检测的稳定性，导致检测结果不准确。
同时，检测材料对气体的阻隔性时，检测仪器对试样周围气体的控温精度直接影响仪器的检测精度。被测试样放在上下测试腔中间，对上下腔控温。当只有一组上下测试腔时，可采用水浴控温、油浴控温、将测试腔放入恒温腔等方式，控温精度也较高。但为了提高检测效率，同一台设备设有多组上下腔同时测试。多组测试腔控温，往往要考虑体积、结构、控温效果和操作是否方便等，以往的控温方式，用于多组测试腔时往往体积庞大，结构复杂，操作起来麻烦。
目前普遍采用对下腔加热或制冷控温，上腔依靠下腔传导热量来保持温度，上下腔之间的试样厚薄不同，导热性不同，上腔温度不确定，两腔之间存在温差，试样两侧存在温差，或两侧温度不稳定，导致检测不精确。
发明内容
本发明为了解决上述问题，提出了一种气体恒温装置及检测系统：在气体进入设备前，或达到检测试样时，采取一定措施，提高试样周围气体温度的控制精度；
本发明解决了气体传输过程中或进入检测装置前的温度不稳定、不可控的问题。
为了实现上述目的，本发明采用如下技术方案：
一种气体恒温装置，包括设置于检测设备的气路外侧的导热元件，所述导热元件与加热或/和制冷元件连接，利用导热元件对加热或/和制冷元件提供的温度的传导，实现整个气路的温度均匀恒定。
本发明中的气路包括但不限于气源至检测设备的供气气路、检测设备的进气气路或/和检测设备内部的传输气路等。
进一步的，作为一种优化的实施方式，气体恒温装置具体包括第一导热元件和第二导热元件，第一导热元件上设置有连通气源和检测设备的进气气路，第一导热元件内部设置有加热或/和制冷元件，保持气体在整个气路内的温度均匀恒定。
所述气路在所述第一导热元件上具有附加延伸长度，第一导热元件和气路的外侧套设第二导热元件，第二导热元件外侧包裹有保温结构。利用气路在第 一导热元件上的具有附加延伸长度的布置，如迂回式布设等延长了气路内气体在单位长度内流经的距离长度，使其受到周围恒温环境的影响，保证气体温度恒定。
进一步的，所述第一导热元件为柱状结构，气路螺旋缠绕在第一导热元件上。
进一步的，所述气路之字形排布于第一导热元件上。
当然，本领域技术人员能够在本发明的工作原理下将迂回式排布方式替换为其他形式，如回字形、蛇形等排布方式，其作用都是增加气体在恒温装置内的流经距离，理应属于常规替换。
进一步的，所述第二导热元件为筒状结构，包裹于第一导热元件外侧。
进一步的，所述气体恒温装置还包括一个壳体，容纳第一导热元件和第二导热元件，形成独立的恒温空间。
进一步的，所述第一导热元件表面设置有凹槽，凹槽与气路的外表面相适配，以保证气路紧密固定在凹槽内。
进一步的，所述第一导热元件和第二导热元件之间采用过盈配合方式，二者装配完成后，紧密贴合在一起。
进一步的，所述保温结构采用不低于尼龙材质导热系数的材质，厚度不小于3mm。并可同时作为安装固定用件。
进一步的，所述第一导热元件中心加工有盲孔，盲孔内安装发热/制冷元件，孔径尺寸与发热/制冷元件尺寸一致。
进一步的，所述气路外侧装有温度传感器，温度传感器还外接温控系统， 用于检测、控制气路的环境温度。
进一步的，所述第一导热元件、第二导热元件和气路均为导热材质，优选为铜。当然，本领域技术人员能够在本发明的工作原理下将材质替换其他材质，如金、碳纤维等等导热性能好的材质。这些理应属于常规替换。
所述的气路有效缠绕长度不小于500mm，可根据气体流量增加而增长。
一种检测系统，在检测设备和气源之间设置有上述的气体恒温装置。
作为另一种优化的具体实施方式，应用于阻隔性测试时，所述检测设备为测试腔，所述测试腔外设置有恒温装置，包括设置在测试腔外侧的传导套，传导套内设置有加热或/和制冷元件。
所述测试腔包括上腔和下腔，所述试样位于上、下腔之间，上腔外侧由传导套包围，传导套紧贴在下腔上。
所述上腔、下腔之间设有密封圈，上腔上设有第一温度检测元件，下腔内设有第二温度检测元件和加热或/和制冷元件。
进一步的，所述上腔上方设有压紧件，所述压紧件穿过传导套，与传导套外设置的支撑件连接，通过支撑件和压紧件的配合，同时将传导套和上腔紧贴下腔，密封圈贴合在上腔、下腔之间，形成封闭的空间，保证密封试样周围的密封性。
所述第一温度检测元件和第二温度检测元件分别外接温控器，精确控制上、下腔的温度，保证测试腔内放置的试样周围的温度恒定。
作为一种优选实施例，所述第一温度检测元件和第二温度检测元件为温度传感器。
进一步的，所述压紧件与支撑件之间通过螺纹连接，通过旋转压紧件，可调整上腔与下腔之间的压紧程度。
所述传导套与支撑件之间的压紧件上设有弹性元件。
作为一种优选实施例，所述弹性元件为弹簧。
当然，本领域技术人员可以在本发明的工作原理启示下，将弹性元件替换为其他部件，如橡胶垫等，这些均为常规替换，理应属于本发明的保护范围。
作为一种优选实施例，所述的压紧件，是气缸杆或电缸杆或液压缸杆。
当然，本领域技术人员可以在本发明的工作原理启示下，将压紧件替换为其他部件，如手动螺杆等等，这些均为常规替换，理应属于本发明的保护范围。
一种材料阻隔性测试装置，包括测试腔，所述测试腔上设置有恒温结构，保持整个检测过程中的温度均匀恒定。或同时在气源与测试腔之间的传输路径上还设置有上述气体恒温装置。
与现有技术相比，本发明的有益效果为：
(1)气体进入设备前，或达到试样时，采取一定措施，提高试样周围气体温度的控制精度；
(2)解决了进气温度不均匀、不可控的问题，提高了检测精度；
(3)气体经过足够长的气路，受到周围恒温管壁及恒温环境的影响，保证流出的气体温度稳定可控；
(4)第一导热元件的外壁加工有和气路外形尺寸一致的螺旋凹槽，可使气路紧密缠绕在凹槽内，使二者近似无间隙，进一步提高气体的控温精度；
(5)当应用于阻隔性测试时，整体结构紧凑，易于操作装配，解决了测试 腔内试样周围温度不稳定的难题，保证了测试环境稳定，提高了检测精度。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。
图1是本发明的原理示意图；
图2是本发明的另一种原理示意图；
图3是本发明的结构外观图；
图4是本发明的内部剖视图；
图5是本发明应用于阻隔性测试时的结构示意图；
其中：1-1.设备，1-2.恒温装置，1-3.管路，1-4.气源；
1.保温层，2.铜套，3.铜芯，4.温度传感器，5.加热棒，6.铜管，7.下腔，8.试样，9.密封圈，10.上腔，11.传导套，12.压紧件，13.支撑件，14.第一温度传感器，15.第二温度传感器，16.加热或/和制冷元件。
具体实施方式：
下面结合附图与实施例对本发明作进一步说明。
应该指出，以下详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、 组件和/或它们的组合。
在本发明中，术语如“上”、“下”、“左”、“右”、“前”、“后”、“竖直”、“水平”、“侧”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系，只是为了便于叙述本发明各部件或元件结构关系而确定的关系词，并非特指本发明中任一部件或元件，不能理解为对本发明的限制。
本发明中，术语如“固接”、“相连”、“连接”等应做广义理解，表示可以是固定连接，也可以是一体地连接或可拆卸连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的相关科研或技术人员，可以根据具体情况确定上述术语在本发明中的具体含义，不能理解为对本发明的限制。
正如背景技术所介绍的，现有技术中存在气体检测时，所检气体温度不恒定，导致气体密度产生变化，影响了气体检测结果的不足，为了解决如上的技术问题，本申请提出了一种气体恒温装置。
如图1所示，可以在检测设备1-1和气源1-4之间的气体管路1-3上设置恒温装置1-2，保证气体在检测前的传输过程中的恒定，维持气体密度。
当然，也可以如图2所示，在检测设备1-1和气体管路1-3的外侧设置恒温装置1-2，包裹检测设备1-1和气体管路1-3，提高试样周围气体温度的控制精度，保证气体在检测时和传输过程中的恒定，维持气体密度。
或者作为更优实施例，可以将气源1-4、检测设备1-1和气体管路1-3的外侧设置恒温装置1-2，当然，恒温装置1-2可以是一体的，也可以是分体的，分别在不同的结构外侧，以保证气体在整个环节的恒定，维持气体密度。这种方式的保温效果更好，但是需要投入成本较高。
作为工作原理的具体实施方式，如图3和图4所示，一种气体恒温装置包括用于气体流通的铜管6；铜管6均匀螺旋缠绕在圆柱形铜芯3上，铜芯3外有铜套2，铜套2外有保温结构1。铜管6、铜芯3及铜套2三者可看作为一体结构，当气体经铜管6从内部流经足够长距离时，受到周围恒温管壁及恒温铜环境的影响，从出口流出的气体温度恒定。
铜管6、铜芯3及铜套2三者材质均为纯铜。
铜芯3外壁加工有和铜管6外形尺寸一致的螺旋凹槽，可使铜紧密缠绕在凹槽内，使二者近似无间隙。
铜管6有效缠绕长度不小于500mm，可根据气体流量增加而增长。
铜套2与铜芯3装配采用过盈配合方式，二者装配完成后，紧密贴合在一起。
保温结构采用保温层1，为不低于尼龙材质导热系数的材质，厚度不小于3mm。并可同时作为安装固定用件。
圆柱铜芯3中心加工有盲孔，用于安装加热棒5，孔径尺寸与加热棒5尺寸一致。当然，盲孔内根据要求保持的温度也可以设置有制冷元件，以替换加热棒5。
作为更好的实施方式，可以同时设置加热棒5和制冷元件，以更好的保持恒定的温度满足检测需求和控制的精度。
铜芯3内部靠近螺旋铜管6处装有温度传感器4，温度传感器4还外接温控系统，用于检测、控制铜芯3环境温度。
铜管6紧密均匀缠绕在铜芯3上的螺旋凹槽内，铜套2套在铜芯3上，二 者过盈紧密配合。铜芯3中心安装加热棒5，并在铜芯3内部靠近铜管6位置安装温度传感器4，并连接温控表，用以检测铜芯3环境温度，进而对加热棒5加热工作进行控制。
将装置气源入口与要检测气体出口相连，装置气源出口直接与气体检测设备入口相连，恒温装置与气体检测设备二者间不得有外露管路。通过传感器4及加热棒5对铜芯3进行加热控温。
本发明的另一种典型实施方式，与上一实施方式不同的是，铜管6均匀之字形缠绕在圆柱形铜芯3上。
本发明的再一种典型实施方式，与上一实施方式不同的是，铜管6均匀蛇字形缠绕在圆柱形铜芯3上。
当进行材料对气体的阻隔性测试时，温度影响气体分子的流动性，也影响材料对气体的阻隔性。控温精度直接影响仪器的检测精度。被测试样8放在上下测试腔中间，对上下腔7控温。当只有一组上下测试腔时，可采用水浴控温、油浴控温、将测试腔放入恒温腔等方式，控温精度也较高。但为了提高检测效率，同一台设备设有多组上下腔7同时测试。多组测试腔控温，往往要考虑体积、结构控温效果和操作是否方便等，以往的控温方式，用于多组测试腔时往往体积庞大，结构复杂，操作起来麻烦。目前普遍采用对下腔7加热或制冷控温，上腔10依靠下腔7传导热量来保持温度，上下腔7之间的试样8厚薄不同，导热性不同，上腔10温度不确定，两腔之间存在温差，试样8两侧存在温差，或两侧温度不稳定，导致检测不精确。
如图5所示，在气体阻隔性测试时，检测设备为测试腔，所述测试腔外设置有恒温装置，包括包裹在测试腔外侧的传导套11，传导套11内设置有加热或/和制冷元件16。
测试腔包括上腔10和下腔7，所述试样8位于上、下腔7之间，上腔10外侧由传导套11包围，传导套11紧贴在下腔7上。
上腔10、下腔7之间设有密封圈9，上腔10上设有第一温度检测元件，下腔7内设有第二温度检测元件和加热或/和制冷元件16。
上腔10上方设有压紧件12，所述压紧件12穿过传导套11，与传导套11外设置的支撑件13连接，通过支撑件13和压紧件12的配合，同时将传导套11和上腔10紧贴下腔7，密封圈9贴合在上腔10、下腔7之间，形成封闭的空间，保证密封试样8周围的密封性。
第一温度检测元件和第二温度检测元件分别外接温控器，精确控制上、下腔7的温度，保证测试腔内放置的试样8周围的温度恒定。
作为一种优选实施例，第一温度检测元件和第二温度检测元件为温度传感器。
进一步的，压紧件12与支撑件13之间通过螺纹连接，通过旋转压紧件12，可调整上腔10与下腔7之间的压紧程度。
传导套11与支撑件13之间的压紧件12上设有弹性元件。
作为一种优选实施例，弹性元件为弹簧。
当然，本领域技术人员可以在本发明的工作原理启示下，将弹性元件替换为其他部件，如橡胶垫等，这些均为常规替换，理应属于本发明的保护范围。
作为一种优选实施例，压紧件12，是气缸杆或电缸杆或液压缸杆。
当然，本领域技术人员可以在本发明的工作原理启示下，将压紧件12替换为其他部件，如手动螺杆等等，这些均为常规替换，理应属于本发明的保护范围。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。
上述虽然结合附图对本发明的具体实施方式进行了描述，但并非对本发明保护范围的限制，所属领域技术人员应该明白，在本发明的技术方案的基础上，本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围以内。

Claims (20)

  1. 一种气体恒温装置，其特征是：包括设置于检测设备的气路外侧的导热元件，所述导热元件与加热或/和制冷元件连接，利用导热元件对加热或/和制冷元件提供的温度的传导，实现整个气路的温度均匀恒定。
  2. 如权利要求1所述的一种气体恒温装置，其特征是：包括第一导热元件和第二导热元件，第一导热元件上设置有连通气源和检测设备的进气气路，第一导热元件内部设置有加热或/和制冷元件，保持气体在整个气路内的温度均匀恒定。
  3. 如权利要求2所述的一种气体恒温装置，其特征是：所述气路在所述第一导热元件上具有附加延伸长度，第一导热元件和气路的外侧套设第二导热元件，第二导热元件外侧包裹有保温结构。
  4. 如权利要求1所述的一种气体恒温装置，其特征是：所述第一导热元件为柱状结构，气路螺旋缠绕在第一导热元件上。
  5. 如权利要求2所述的一种气体恒温装置，其特征是：所述气路之字形排布于第一导热元件上。
  6. 如权利要求1所述的一种气体恒温装置，其特征是：所述第二导热元件为筒状结构，包裹于第一导热元件外侧。
  7. 如权利要求1所述的一种气体恒温装置，其特征是：所述气体恒温装置还包括一个壳体，容纳第一导热元件和第二导热元件，形成独立的恒温空间。
  8. 如权利要求1所述的一种气体恒温装置，其特征是：所述第一导热元件表面设置有凹槽，凹槽与气路的外表面相适配，以保证气路紧密固定在凹槽内。
  9. 如权利要求1所述的一种气体恒温装置，其特征是：所述第一导热元件 和第二导热元件之间采用过盈配合方式，二者装配完成后，紧密贴合在一起。
  10. 如权利要求1所述的一种气体恒温装置，其特征是：所述第一导热元件中心加工有盲孔，盲孔内安装加热或/和制冷元件。
  11. 如权利要求2所述的一种气体恒温装置，其特征是：所述气路外侧装有温度传感器，温度传感器还外接温控系统，用于检测、控制气路的环境温度。
  12. 如权利要求2所述的一种气体恒温装置，其特征是：所述的气路有效缠绕长度不小于500mm，具体长度根据气体流量增加而增长。
  13. 一种检测系统，其特征是：在检测设备和气源之间设置有如权利要求1-12中任一项所述的气体恒温装置。
  14. 如权利要求1所述的一种气体恒温装置，其特征是：所述检测设备为阻隔性测试腔，所述测试腔外设置有恒温装置，包括包裹在测试腔外侧的传导套，传导套内设置有加热或/和制冷元件。
  15. 如权利要求14所述的一种气体恒温装置，其特征是：所述测试腔包括上腔和下腔，所述试样位于上、下腔之间，上腔外侧由传导套包围，传导套紧贴在下腔上。
  16. 如权利要求14所述的一种气体恒温装置，其特征是：所述上腔、下腔之间设有密封圈，上腔上设有第一温度检测元件，下腔内设有第二温度检测元件和加热或/和制冷元件。
  17. 如权利要求15所述的一种气体恒温装置，其特征是：所述上腔上方设有压紧件，所述压紧件穿过传导套，与传导套外设置的支撑件连接，通过支撑件和压紧件的配合，同时将传导套和上腔紧贴下腔，密封圈贴合在上腔、下腔 之间，形成封闭的空间。
  18. 如权利要求14所述的一种气体恒温装置，其特征是：所述第一温度检测元件和第二温度检测元件分别外接温控器，控制上、下腔的温度，实现测试腔内放置的试样周围的温度恒定。
  19. 如权利要求15所述的一种气体恒温装置，其特征是：所述压紧件与支撑件之间通过螺纹连接，通过旋转压紧件，可调整上腔与下腔之间的压紧程度。
  20. 如权利要求15所述的一种气体恒温装置，其特征是：所述传导套与支撑件之间的压紧件上设有弹性元件。
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CN202795081U (zh) * 2012-09-12 2013-03-13 济南兰光机电技术有限公司 控温罩装置
CN203849084U (zh) * 2014-04-15 2014-09-24 南京国电环保科技有限公司 一种气体加热恒温预热器
CN105572272A (zh) * 2016-01-15 2016-05-11 湖南师范大学 一种新结构的毛细管加热装置

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