CN102954977A - Nuclear magnetic resonance instrument probe auxiliary device for carrying out steam saturation on porous media - Google Patents

Nuclear magnetic resonance instrument probe auxiliary device for carrying out steam saturation on porous media Download PDF

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CN102954977A
CN102954977A CN2012104522961A CN201210452296A CN102954977A CN 102954977 A CN102954977 A CN 102954977A CN 2012104522961 A CN2012104522961 A CN 2012104522961A CN 201210452296 A CN201210452296 A CN 201210452296A CN 102954977 A CN102954977 A CN 102954977A
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probe tube
saturation
probe
magnetic resonance
nuclear magnetic
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CN102954977B (en
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姚艳斌
杨培强
刘俊刚
吴建国
唐一龙
齐胜喜
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Suzhou Niumag Electronic Technology Co Ltd
China University of Geosciences Beijing
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SUZHOU NIUMAI ELECTRONICS CO Ltd
China University of Geosciences Beijing
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Abstract

本发明公开了一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,它包括内部装有多孔介质样品的探头管,所述探头管上方连接有一真空泵,所述探头管下方连接有水槽及饱和装置和加热装置,所述水槽及饱和装置由加热装置加热后输送水蒸气到探头管内;所述真空泵可以将探头管内部的样品抽真空,从而对样品孔隙内部的空气、液体、杂质进行清理;本发明与传统核磁共振岩心检测装置相比,通过饱和水蒸汽解决了样品细微孔隙饱和不足的问题;本发明饱和、加热、真空装置与探头相连接的设计,保证实验过程中样品的温度和密封状态,提升了核磁共振对岩心样品的检测精度和准确度。

Figure 201210452296

The invention discloses a nuclear magnetic resonance instrument probe supporting device for saturating porous media with water vapor, which includes a probe tube with a porous medium sample inside, a vacuum pump connected above the probe tube, and a water tank connected below the probe tube and a saturation device and a heating device, the water tank and the saturation device are heated by the heating device and transport water vapor into the probe tube; the vacuum pump can vacuum the sample inside the probe tube, thereby removing the air, liquid, and impurities in the sample pores. Cleaning; compared with the traditional nuclear magnetic resonance core detection device, the present invention solves the problem of insufficient saturation of the fine pores of the sample through saturated water vapor; the design of the saturation, heating and vacuum device connected with the probe in the present invention ensures the temperature of the sample during the experiment And the sealed state, which improves the detection precision and accuracy of nuclear magnetic resonance for core samples.

Figure 201210452296

Description

一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置A supporting device for the probe of a nuclear magnetic resonance instrument capable of saturating a porous medium with water vapor

技术领域 technical field

本发明涉及一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置。The invention relates to a matching device for a probe of a nuclear magnetic resonance instrument capable of saturating a porous medium with water vapor.

背景技术 Background technique

煤岩等由各种有机质、无机矿物和孔裂隙构造的多孔介质,在采用核磁共振方法研究其中的孔隙度、渗透率、饱和度以及孔隙分布情况时,需要采用与常规核磁波谱分析和成像分析所不同的方法。由于样品本身不产生核磁信号,实验人员必须将样品孔隙中的气体、液体以及杂质抽空,并注入蒸馏水并密封,完成以上前处理步骤后,才能得到可靠的实验数据。Coal rock and other porous media composed of various organic matter, inorganic minerals and pores and fissures, when using NMR methods to study the porosity, permeability, saturation and pore distribution, it is necessary to use conventional NMR spectroscopy and imaging analysis different methods. Since the sample itself does not generate NMR signals, the experimenter must evacuate the gas, liquid and impurities in the sample pores, inject distilled water and seal it. After completing the above pretreatment steps, reliable experimental data can be obtained.

然而对于低孔渗煤岩样品来说,常规饱水装置很难甚至不能进入样品中孔隙中,导致饱水不完全。这会导致核磁共振检测精度的下降。However, for low-porosity coal-rock samples, it is difficult or even impossible for conventional water saturation devices to enter the pores of the sample, resulting in incomplete saturation. This will lead to a decrease in the accuracy of NMR detection.

本发明认识到以上传统手段和设备的弊端,故采用对样品在线持续饱和水蒸汽的方法,以期实现最佳检测效果。The present invention recognizes the disadvantages of the above traditional means and equipment, so it adopts the method of continuously saturating the sample with water vapor on-line, in order to achieve the best detection effect.

发明内容 Contents of the invention

本发明目的是:提供一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置。The object of the present invention is to provide a supporting device for a probe of a nuclear magnetic resonance instrument capable of saturating a porous medium with water vapor.

本发明的技术方案是:一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,它包括内部装有多孔介质样品的探头管,所述探头管上方连接有一真空泵,所述探头管下方连接有水槽及饱和装置和加热装置,所述水槽及饱和装置由加热装置加热后输送水蒸气到探头管内。The technical solution of the present invention is: a nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media, which includes a probe tube with a porous medium sample inside, a vacuum pump is connected above the probe tube, and a vacuum pump is connected below the probe tube. A water tank, a saturation device and a heating device are connected, and the water tank and the saturation device are heated by the heating device to transport water vapor into the probe tube.

优选的,所述真空泵通过气体抽真空出口管道与探头管相连,所述气体抽真空出口管道伸入探头管中与样品相连,真空泵可以将探头管内部的样品抽真空,从而对样品孔隙内部的空气、液体、杂质进行清理。Preferably, the vacuum pump is connected to the probe tube through a gas vacuum outlet pipeline, and the gas vacuum outlet pipeline extends into the probe tube to connect with the sample, and the vacuum pump can vacuum the sample inside the probe tube, thereby reducing the pressure of the sample inside the sample pore. Clean up air, liquid and impurities.

优选的,所述探头管内装有有机玻璃填充材料,样品在探头管中由有机玻璃填充材料固定位置,并保证探头管内的气密性,所述探头管外壁由具有隔热效果的真空绝热泡沫所料制成。Preferably, the probe tube is equipped with plexiglass filling material, the sample is fixed in the probe tube by the plexiglass filling material, and the airtightness in the probe tube is ensured, and the outer wall of the probe tube is made of vacuum insulation foam with heat insulation effect Made as expected.

优选的,在位于所述真空泵和所述探头管之间的气体抽真空出口管道上设有第一气密控制阀,探头管内部设有温度、压力传感器,所述加热装置通过加热管道连接在探头管下方,所述加热管道穿过水槽及饱和装置,所述水槽及饱和装置通过气体饱和入口管道连接在探头管下方,所述气体饱和入口管道伸入探头管下部与样品连接,所述气体饱和入口管道上设有第二气密控制阀。Preferably, a first airtight control valve is provided on the gas vacuum outlet pipeline between the vacuum pump and the probe tube, temperature and pressure sensors are arranged inside the probe tube, and the heating device is connected to the Below the probe tube, the heating pipeline passes through the water tank and the saturation device, and the water tank and the saturation device are connected under the probe tube through a gas-saturated inlet pipeline, and the gas-saturated inlet pipeline extends into the lower part of the probe tube to connect with the sample. A second airtight control valve is provided on the saturated inlet pipeline.

优选的,所述加热装置通过加热管道对水槽及饱和装置进行加热,水槽及饱和装置受热后产生的水蒸气通过气体饱和入口管道输送到探头管内,所述加热装置可以通过加热管道对探头管的温度进行维持。Preferably, the heating device heats the water tank and the saturation device through the heating pipeline, and the water vapor generated after the water tank and the saturation device is heated is transported into the probe tube through the gas saturation inlet pipeline, and the heating device can heat the probe tube through the heating pipeline. The temperature is maintained.

优选的,所述探头管外壁由具有隔热效果的真空绝热泡沫所料制成。Preferably, the outer wall of the probe tube is made of vacuum insulation foam material with heat insulation effect.

本发明的优点是:The advantages of the present invention are:

1. 本发明与传统核磁共振岩心检测装置相比,通过饱和水蒸汽解决了样品细微孔隙饱和不足的问题。1. Compared with the traditional nuclear magnetic resonance core detection device, the present invention solves the problem of insufficient saturation of the fine pores of the sample through saturated water vapor.

2. 本发明饱和、加热、真空装置与探头相连接的设计,保证实验过程中样品的温度和密封状态,提升了核磁共振对岩心样品的检测精度和准确度。2. The design of the connection between the saturation, heating, and vacuum devices of the present invention and the probe ensures the temperature and sealing state of the sample during the experiment, and improves the detection accuracy and accuracy of the nuclear magnetic resonance for the core sample.

附图说明 Description of drawings

下面结合附图及实施例对本发明作进一步描述:The present invention will be further described below in conjunction with accompanying drawing and embodiment:

图1为饱和水蒸气的核磁共振探头配套装置连接示意图;Fig. 1 is the schematic diagram of the connection of the supporting device of the nuclear magnetic resonance probe saturated with water vapor;

图2为本发明工作流程图。Fig. 2 is the working flow chart of the present invention.

其中:1、真空泵;2、第一气密控制阀;3、永磁体;4、磁体模块外壳;5、探头管外壁;6、有机玻璃填充材料;7、岩心样品;8、第二气密控制阀;9、水槽及饱和装置;10、加热装置;11、气体饱和入口管道;12、气体抽真空出口管道;13、加热管道;14、温度、压力传感器。Among them: 1. Vacuum pump; 2. First airtight control valve; 3. Permanent magnet; 4. Magnet module shell; 5. Outer wall of probe tube; 6. Organic glass filling material; 7. Core sample; 8. Second airtight Control valve; 9. Water tank and saturation device; 10. Heating device; 11. Gas saturation inlet pipe; 12. Gas vacuum outlet pipe; 13. Heating pipe; 14. Temperature and pressure sensors.

具体实施方式 Detailed ways

实施例:如图1所示,本发明包括探头管、真空泵1、水槽及饱和装置9和加热装置10,还包括连接各模块的导气管通道,以及气密阀门和温度、压力传感器;但不包括沿用核磁共振仪器的永磁体3、磁体模块外壳4以及作为检测对象的岩心样品7。Embodiment: as shown in Figure 1, the present invention comprises probe pipe, vacuum pump 1, water tank and saturation device 9 and heating device 10, also comprises the air guide pipe channel that connects each module, and airtight valve and temperature, pressure sensor; But not It includes a permanent magnet 3 from an NMR instrument, a magnet module housing 4 and a rock core sample 7 as a detection object.

探头管外壁5选用真空绝热泡沫塑料。The outer wall 5 of the probe tube is made of vacuum insulation foam plastics.

探头管与真空泵1之间设有第一气密控制阀2;所述气体饱和入口管道11上设有第二气密控制阀8,探头管内设有温度、压力传感器14,用以保证探头管内部压力和温度符合实验要求。A first airtight control valve 2 is provided between the probe tube and the vacuum pump 1; a second airtight control valve 8 is provided on the gas-saturated inlet pipe 11, and a temperature and pressure sensor 14 is provided in the probe tube to ensure that the probe tube The internal pressure and temperature meet the experimental requirements.

本实施例的工作原理如下:The working principle of this embodiment is as follows:

实验前,岩心样品7在样品管中由有机玻璃填充材料6固定位置,保证探头管内的气密性。在实验运用过程中,首先,打开气体出口处的第一气密控制阀2,紧闭气体入口处的第二气密控制阀8;运用真空泵1将探头管内抽真空;其次,打开气体入口处的第二气密控制阀8,关闭气体出口处的第一气密控制阀2,使用加热装置10令水槽及饱和装置9中的蒸馏水汽化,并将水蒸气通过气体饱和入口管道11灌入样品管中,通过温度、压力传感器14得到的探头管内的温度和压强来确定样品7隙中的水蒸气是否达到饱和。当样品7隙中的水蒸汽达到饱和后,再次关闭气体入口处的第二气密控制阀8,加热装置10通过对加热管道13进行加热,让热量通过管道金属热传导的方式使探头管的温度得到维持;使用核磁共振仪器对样品7进行信号采集;最后,打开气体出口处的第一气密控制阀2,根据实验要求重复上述过程。Before the experiment, the core sample 7 is fixed in the sample tube by the plexiglass filling material 6 to ensure the airtightness in the probe tube. During the experiment, first, open the first airtight control valve 2 at the gas outlet, and close the second airtight control valve 8 at the gas inlet; use the vacuum pump 1 to evacuate the probe tube; secondly, open the gas inlet the second airtight control valve 8, close the first airtight control valve 2 at the gas outlet, use the heating device 10 to vaporize the distilled water in the water tank and the saturation device 9, and pour water vapor into the sample through the gas saturation inlet pipe 11 In the tube, the temperature and pressure in the probe tube obtained by the temperature and pressure sensor 14 are used to determine whether the water vapor in the gap of the sample 7 reaches saturation. When the water vapor in the gap of the sample 7 reaches saturation, the second airtight control valve 8 at the gas inlet is closed again, and the heating device 10 heats the heating pipe 13 to make the heat conduction through the metal of the pipe to make the temperature of the probe tube be maintained; use the nuclear magnetic resonance instrument to collect the signal of the sample 7; finally, open the first airtight control valve 2 at the gas outlet, and repeat the above process according to the experimental requirements.

以上仅是本发明的具体应用范例,对本发明的保护范围不构成任何限制。除上述实施例外,本发明还可以有其它实施方式。凡采用等同替换或等效变换形成的技术方案,均落在本发明所要求保护的范围之内。The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. In addition to the above-mentioned embodiments, the present invention can also have other embodiments. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection claimed by the present invention.

Claims (6)

1.一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:它包括内部装有多孔介质样品(7)的探头管,所述探头管上方连接有一真空泵(1),所述探头管下方连接有水槽及饱和装置(9)和加热装置(10),所述水槽及饱和装置(9)由加热装置(10)加热后输送水蒸气到探头管内。 1. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media, characterized in that: it includes a probe tube with a porous medium sample (7) inside, and a vacuum pump (1) is connected above the probe tube, A water tank, a saturation device (9) and a heating device (10) are connected below the probe tube, and the water tank and the saturation device (9) are heated by the heating device (10) to transport water vapor into the probe tube. 2.根据权利要求1所述的一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:所述真空泵(1)通过气体抽真空出口管道(12)与探头管相连,所述气体抽真空出口管道(12)伸入探头管中与样品(7)相连,真空泵(1)可以将探头管内部的样品(7)抽真空,从而对样品(7)孔隙内部的空气、液体、杂质进行清理。 2. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media according to claim 1, characterized in that: the vacuum pump (1) is connected to the probe tube through the gas vacuum outlet pipe (12), The gas vacuum outlet pipe (12) extends into the probe tube and connects with the sample (7), and the vacuum pump (1) can vacuum the sample (7) inside the probe tube, so that the air, Clean up liquids and impurities. 3.根据权利要求1所述的一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:所述探头管内装有有机玻璃填充材料(6),样品(7)在探头管中由有机玻璃填充材料(6)固定位置,并保证探头管内的气密性,所述探头管外壁由具有隔热效果的真空绝热泡沫所料制成。 3. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media according to claim 1, characterized in that: the probe tube is equipped with a plexiglass filling material (6), and the sample (7) is in the probe The position is fixed by plexiglass filling material (6) in the tube, and the airtightness inside the probe tube is guaranteed, and the outer wall of the probe tube is made of vacuum insulation foam material with heat insulation effect. 4.根据权利要求1所述的一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:在位于所述真空泵(1)和所述探头管之间的气体抽真空出口管道(12)上设有第一气密控制阀(2),探头管内部设有温度、压力传感器(14),所述加热装置(10)通过加热管道(13)连接在探头管下方,所述加热管道(13)穿过水槽及饱和装置(9),所述水槽及饱和装置(9)通过气体饱和入口管道(11)连接在探头管下方,所述气体饱和入口管道(11)伸入探头管下部与样品(7)连接,所述气体饱和入口管道(11)上设有第二气密控制阀(8)。 4. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media according to claim 1, characterized in that: the gas vacuum outlet between the vacuum pump (1) and the probe tube The pipeline (12) is provided with a first airtight control valve (2), the inside of the probe tube is provided with a temperature and pressure sensor (14), and the heating device (10) is connected below the probe tube through a heating pipeline (13). The heating pipe (13) passes through the water tank and the saturation device (9), and the water tank and the saturation device (9) are connected under the probe tube through the gas-saturated inlet pipe (11), and the gas-saturated inlet pipe (11) extends into The lower part of the probe tube is connected to the sample (7), and the gas-saturated inlet pipe (11) is provided with a second airtight control valve (8). 5.根据权利要求4所述的一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:所述加热装置(10)通过加热管道(13)对水槽及饱和装置(9)进行加热,水槽及饱和装置(9)受热后产生的水蒸气通过气体饱和入口管道(11)输送到探头管内,所述加热装置(10)可以通过加热管道(13)对探头管的温度进行维持。 5. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media according to claim 4, characterized in that: the heating device (10) heats the water tank and the saturation device (9) through the heating pipe (13) ) for heating, the water vapor generated by the heated water tank and saturation device (9) is transported into the probe tube through the gas saturation inlet pipe (11), and the heating device (10) can control the temperature of the probe tube through the heating pipe (13). maintain. 6.根据权利要求1所述的一种对多孔介质进行水蒸汽饱和的核磁共振仪器探头配套装置,其特征在于:所述探头管外壁(5)由具有隔热效果的真空绝热泡沫所料制成。 6. A nuclear magnetic resonance instrument probe matching device for water vapor saturation of porous media according to claim 1, characterized in that: the outer wall (5) of the probe tube is made of vacuum insulation foam with heat insulation effect become.
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CN103344354A (en) * 2013-07-01 2013-10-09 大连理工大学 In-porous-medium fluid temperature visualization measuring device
CN103776490A (en) * 2014-01-13 2014-05-07 大连理工大学 Magnetic-resonance imaging method for synchronous measurement of fluid speed and temperature in porous medium
CN105973314A (en) * 2016-07-14 2016-09-28 河海大学 Porous medium saturation and non-saturation measurement system and method under surface water level change
CN106525887A (en) * 2016-09-22 2017-03-22 大连工业大学 Temperature-changeable low-field nuclear magnetic resonance detecting device
CN109540957A (en) * 2018-12-29 2019-03-29 北京泓泰天诚科技有限公司 A kind of Permanent magnetic MR spectrometer

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