WO2024041530A1 - 一种测量烟草段内烟丝有序率的方法与装置 - Google Patents

一种测量烟草段内烟丝有序率的方法与装置 Download PDF

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Publication number
WO2024041530A1
WO2024041530A1 PCT/CN2023/114238 CN2023114238W WO2024041530A1 WO 2024041530 A1 WO2024041530 A1 WO 2024041530A1 CN 2023114238 W CN2023114238 W CN 2023114238W WO 2024041530 A1 WO2024041530 A1 WO 2024041530A1
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Prior art keywords
tobacco
flow
measuring
pressure difference
segment
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PCT/CN2023/114238
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English (en)
French (fr)
Inventor
李斌
张智轩
齐伟
李博
尹献忠
聂长武
王爽
张展
张越
付丽丽
王艺璇
张柯
王兵
Original Assignee
中国烟草总公司郑州烟草研究院
河南中烟工业有限责任公司
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Priority claimed from CN202211014979.9A external-priority patent/CN117664788A/zh
Application filed by 中国烟草总公司郑州烟草研究院, 河南中烟工业有限责任公司 filed Critical 中国烟草总公司郑州烟草研究院
Publication of WO2024041530A1 publication Critical patent/WO2024041530A1/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

Definitions

  • the invention belongs to the field of heated cigarette rolling quality detection methods, and specifically relates to a method and device for measuring the order ratio of shredded tobacco in a tobacco section.
  • Heated cigarettes are a new type of tobacco product in the development of the tobacco industry in recent years. Their low-harm attributes have promoted the rapid development of this type of products.
  • the heat source of heated cigarettes is externally applied to the tobacco section, and its heat transfer effect is closely related to the sensory quality perceived by consumers.
  • the tobacco sections are filled with ordered tobacco shreds. The method has a significant impact on the heat transfer effect. Therefore, it is crucial to detect and control the orderliness of cut tobacco in the cigarette during processing.
  • a first aspect of the present invention provides a method for measuring the order ratio of shredded tobacco in a tobacco section, which includes the following steps:
  • A. Determine the circumference ⁇ of the tobacco segment of the cigarette to be tested and the length L of the tobacco segment;
  • K is the permeability coefficient of the tobacco section of the cigarette to be tested
  • A is the flow cross-sectional area of tobacco section 4
  • ⁇ is the air density
  • g is the gravity acceleration
  • K max is defined as the completely ordered tobacco section measured under specific testing conditions.
  • the K value of 4 K min is defined as the K value of the completely disordered tobacco segment 4 measured under specific detection conditions.
  • the complete order means that the arrangement direction of the cut tobacco is completely parallel to the air flow direction
  • the complete disorder means that the arrangement direction of the cut tobacco is completely perpendicular to the air flow direction
  • the specific detection conditions include but are not limited to that the firmware 5 having the same length as the tobacco section of the cigarette to be tested is filled with the same quality of shredded tobacco 6 and has the same filling density, but the shredded tobacco has different stacking methods ( When the stacking method is completely ordered, the measured permeability coefficient is K max ; when the stacking method is completely disordered, the measured permeability coefficient is K min ), and then the gas flowing through the same flow rate is detected.
  • a second aspect of the present invention provides a device for implementing the method for measuring the order ratio of shredded tobacco in a tobacco section described in the first aspect of the present invention.
  • the device includes a pressure difference measurement chamber 1-1, a pressure difference sensor 3-1, Air source 2-1, flow detection unit 2-4;
  • the pressure difference measurement chamber 1-1 has an accommodation cavity 1-4 for accommodating tobacco segments 4, and the outer diameter of the tobacco segment 4 is adapted to the inner diameter of the accommodation cavity 1-4;
  • the accommodation chamber 1-4 is connected with the pressure difference sensor 3-1, and the pressure difference sensor 3-1 is used to measure the pressure difference ⁇ P between the two ends of the tobacco section 4;
  • the gas source 2-1 ventilates or pumps air into the accommodation chamber 1-4, and the flow detection unit 2-4 is connected in series with the accommodation chamber 1-4 to detect the gas flow therein.
  • the inner diameter of the accommodation cavity 1-4 is 5-10 mm and can accommodate tobacco segments 4 with different circumferences; preferably, the accommodation cavity 1-4 can accommodate tobacco segments 4 with a circumference of 16-25 mm.
  • blocking members 1-2 are respectively provided at both ends of the accommodation cavity 1-4, and at least one of the blocking members 1-2 can move axially along the accommodation cavity 1-4.
  • tobacco segments 4 with different lengths can be accommodated between the blocking members 1-2 at both ends of the accommodation cavity 1-4.
  • tobacco segments 4 with a length of 5-50 mm can be accommodated.
  • the device for measuring the ordering rate of disorderly rolled cut tobacco also includes a flow controller 2-3 connected in series with the accommodation chamber 1-4, and the flow controller 2-3 is used to control the air source.
  • the flow rate of the air flow in the chambers 1-4 is preferably 10 to 35 mL/s.
  • the gas source 2-1 is a positive pressure gas source or a negative pressure gas source.
  • the positive pressure air source is the compressed air directly provided by the positive pressure cylinder
  • the negative pressure air source can be directly provided by the negative pressure cylinder, or by the positive pressure cylinder and the negative pressure generating device or the negative pressure fan. The combination.
  • the blocking member 1-2 is a thin plate with a certain porosity.
  • the blocking member 1-2 is a sintered plate or a sintered mesh.
  • the present invention has the following beneficial effects:
  • This invention proposes for the first time to measure the pressure difference at a certain flow rate, based on the flow of porous media, assuming that the permeability coefficient is the largest in the stacking state when it is completely ordered, and the permeability coefficient is the smallest in the stacking state when it is completely disordered, by calculating the accumulation of tobacco shreds in the tested sample
  • the permeability coefficient under the state is compared with the maximum value of the permeability coefficient and the minimum value of the permeability coefficient, and the index of the order rate is calculated and obtained.
  • the ordering rate can be used as a detection index in the cigarette production process, which is of great significance for controlling the quality stability of cigarettes during the production process.
  • Figure 1 is a schematic diagram of a device for implementing a method for measuring the order ratio of shredded tobacco in a tobacco section in Embodiment 1 of the present invention
  • Figure 2 is a schematic structural diagram of the airflow flowing through the firmware under specific detection conditions.
  • the arrow represents the direction of the airflow;
  • plural means two or more.
  • the orientation or state relationship indicated by the terms “inner”, “upper”, “lower”, etc. is based on the orientation or state relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or elements must be oriented, constructed and operate in a particular orientation and therefore are not to be construed as limitations of the invention.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.
  • connection can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.
  • a method for measuring the order ratio of shredded tobacco in a tobacco segment which includes the following steps:
  • K is the permeability coefficient of the tobacco section
  • A is the cross-sectional area of the flow section of tobacco section 4
  • ⁇ is the air density
  • g is the gravity acceleration
  • K max is defined as the K value of the completely ordered tobacco section 4 measured under specific detection conditions.
  • the maximum value of K min is defined as the minimum value of the K value of the completely disordered tobacco segment 4 measured under specific detection conditions.
  • complete order means that the arrangement direction of the cut tobacco is completely parallel to the direction of the air flow
  • complete disorder means that the arrangement direction of the cut tobacco is completely perpendicular to the direction of the air flow
  • the specific detection conditions include but are not limited to the firmware 5 having the same length as the tobacco section of the cigarette to be tested, being filled with the same quality of shredded tobacco 6 and having the same filling density, but with different stacking methods (the stacking method is When the stacking method is completely disordered, the measured permeability coefficient is K max ; when the stacking method is completely disordered, the measured permeability coefficient is K min ), and then through the detection conditions of gas flowing at the same flow rate.
  • the device includes a pressure difference measurement chamber 1-1, a pressure difference sensor 3-1, an air source 2-1, and a flow detection unit 2-4;
  • the pressure difference measurement chamber 1-1 has an accommodation cavity 1-4 for accommodating tobacco segments 4, and the outer diameter of the tobacco segment 4 is the same as the inner diameter of the accommodation cavity 1-4;
  • the accommodation chamber 1-4 is connected with the pressure difference sensor 3-1, and the pressure difference sensor 3-1 is used to measure the pressure difference ⁇ P between the two ends of the tobacco section 4;
  • the air source 2-1 ventilates or extracts air into the accommodation chamber 1-4, and the flow detection unit 2-4 is connected in series with the accommodation chamber 1-4 to detect the gas flow rate of the air flowing through the tobacco section.
  • the inner diameter of the accommodation cavity 1-4 is 5-10 mm and can accommodate tobacco segments 4 with different circumferences; preferably, the accommodation cavity 1-4 can accommodate tobacco segments 4 with a circumference of 16-25 mm.
  • the two ends of the accommodation cavity 1-4 are respectively provided with blocking members 1-2, and at least one of the blocking members 1-2 can Move axially along the accommodation chamber 1-4.
  • Tobacco segments 4 with different lengths can be accommodated between the blocking members 1-2 at both ends of the accommodation cavity 1-4; preferably, tobacco segments 4 with a length of 5-50 mm can be accommodated.
  • the device for measuring the ordering rate of disorderly rolled tobacco also includes a flow controller 2-3 connected in series with the accommodation chamber 1-4, and the flow controller 2-3 is used to control the air source 2-1
  • the flow rate of the air flow flowing into the accommodation chamber 1-4 is preferably 10 to 35 mL/s.
  • the air source 2-1 is a positive pressure air source or a negative pressure air source.
  • the positive pressure air source is the compressed air directly provided by the positive pressure cylinder
  • the negative pressure air source can be directly provided by the negative pressure cylinder, or by the positive pressure cylinder and the negative pressure generating device or the negative pressure fan. The combination.
  • the blocking member 1-2 is a thin plate with a certain porosity.
  • the blocking member 1-2 is a sintered plate or a sintered mesh.
  • a device for measuring the orderliness of shredded tobacco in a tobacco section includes a pressure difference measurement chamber 1-1, a pressure difference sensor 3-1, an air source 2-1, a flow detection unit 2-4 and a flow rate sensor. Controller 2-3;
  • the flow detection unit 2-4 may be a flow meter.
  • the pressure difference measurement chamber 1-1 has an accommodation chamber 1-4 for accommodating the tobacco section 4, and the upstream of the accommodation chamber 1-4 is connected to the first pressure difference interface 3-1- of the pressure difference sensor 3-1. 1 is connected, and the downstream of the accommodation chamber 1-4 is connected with the second differential pressure interface 3-1-2 of the differential pressure sensor 3-1;
  • One end of the flow detection unit 2-4 is connected to the air source 2-1 through the left pipe 2-2-1, and the other end is connected to one end of the flow controller 2-3 through the right pipe 2-2-2.
  • the other end of the flow controller 2-3 is connected to the downstream of the accommodation chamber 1-4 through a pipe 2-2.
  • Blocking members 1-2 are provided at both ends of the accommodating cavity 1-4.
  • the blocking members 1-2 are coaxially arranged with the accommodating cavity 1-4, and at least one of the blocking members 1-2 can be installed along all directions.
  • the accommodating cavity 1-4 moves in the axial direction, and tobacco segments 4 of different lengths can be accommodated between the blocking members 1-2 at both ends of the accommodating cavity 1-4.
  • the measurement method is as follows:
  • a method for measuring the ordering rate of cut tobacco in a tobacco section using the above-mentioned device for measuring the ordering rate of cut tobacco in a tobacco section, including the following steps:
  • the air source 2-1 Open the air source 2-1, use the air source 2-1 to introduce a stable air flow into the accommodation chamber 1-4, adjust the flow controller 2-3 so that the air flow reaches the set flow rate, and then the measurement can be started. At this time, Use the flow detection unit 2-4 to detect the Q V value.
  • the measured Q V is 17.5mL/s.
  • the pressure difference between the upstream and downstream of the accommodation chamber 1-4 is measured through the pressure sensor 3-1 to be ⁇ P1. According to the known
  • K is the permeability coefficient of the tobacco section of the cigarette
  • A is the cross-sectional area of the tobacco section 4
  • ⁇ 1.205kg/m 3 is the air density
  • g is the gravity acceleration
  • the same measurement conditions that is, in a firmware with the same length, it is filled with the same quality of shredded tobacco and has the same filling density, but with different stacking methods, and then passes through the gas flowing at the same flow rate.
  • the maximum measured permeability coefficient K max of the tobacco section is 0.000472m/s
  • the minimum permeability coefficient K min of the tobacco section is 0.000059m/s.

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Abstract

一种测量烟草段内烟丝有序率的方法与装置，方法包括以下步骤：A.确定待测样品烟草段圆周φ及烟草段长度L；B.利用气源(2-1)向烟草段(4)内通入稳定气流，通过流量检测单元(2-4)检测气流流经烟草段(4)的体积流量Q V值，利用压差传感器(3-1)测量待测样品烟草段(4)两端的压差△P； C.根据以下三个公式计算烟丝有序率η i：式 I, 式 II, 式 III。其中： K为烟草段(4)的渗透系数，A为烟草段(4)过流断面截面积，ρ为空气密度，g为重力加速度，K max定义为特定检测条件下测量得到的完全有序的烟草段(4)的K值的最大值，K min定义为特定检测条件下测量得到的完全无序的烟草段(4)的K值。通过计算获取烟草段(4)内烟丝有序率，对无序烟丝基棒成型过程中的质量及稳定性具有重要指导作用。

Description

一种测量烟草段内烟丝有序率的方法与装置 技术领域
本发明属于加热卷烟卷制质量检测方法领域，具体涉及一种测量烟草段内烟丝有序率的方法与装置。
背景技术
加热卷烟是近年来烟草行业自身发展中一类新型烟草制品，其低危害的属性推动了该类产品的快速发展。由于加热卷烟与传统卷烟相比，热源是外部施加至烟草段，其传热效果对其消费者感知的感官质量密切相关，而在加热卷烟烟支卷制中烟草段中烟丝有序排列的填充方式，对传热效果具有明显影响，因此，加工过程烟丝在烟支中有序程度的检测与控制至关重要。
目前，针对切后烟丝进行卷烟时，烟丝在加热卷烟烟草段通常有序程度不明，可控程序比较低。需要通过卷烟设备的流态化供丝系统的调控实现对无序烟丝有序化的填充。但现在尚未有测量无序烟丝卷制成型后有序程度的装置与方法。
为了解决以上问题，提出本发明。
发明内容
本发明第一方面提供一种测量烟草段内烟丝有序率的方法，其包括以下步骤：
A.确定待测样品烟支烟草段圆周φ及烟草段长度L；
B.利用气源2-1向烟草段内通入稳定气流，通过流量检测单元2-4检测气流流经烟草段的体积流量QV值，利用压差传感器3-1测量待测样品烟草段4两端的压差△P；
C.根据以下三个公式计算烟丝有序率ηi：


其中：
K为待测烟支烟草段的渗透系数，A为烟草段4过流断面截面积，ρ为空气密度，g为重力加速度，Kmax定义为特定检测条件下测量得到的完全有序的烟草段4的K值，Kmin定义为特定检测条件下测量得到的完全无序的烟草段4的K值。
优选地，所述完全有序为烟丝排布方向完全与气流方向保持平行，所述完全无序为烟丝排布方向完全与气流方向垂直。
其中，所述特定检测条件为包含但不限于在与待测烟支烟草段具有相同长度的固件5中，填充有相同质量的烟丝6并具有相同的填充密度，但烟丝具有不同的堆积方式(堆积方式为完全有序时，测得的渗透系数是Kmax；堆积方式为完全无序时，测得的渗透系数是Kmin)，再通过流经相同流速的气体检测条件。
本发明第二方面提供一种用于实现本发明第一方面所述测量烟草段内烟丝有序率的方法的装置，所述装置包括压差测量室1-1、压差传感器3-1、气源2-1、流量检测单元2-4；
所述压差测量室1-1内具有用于容纳烟草段4的容纳腔1-4，所述烟草段4的外径与所述容纳腔1-4的内径相适应；
所述容纳腔1-4与所述压差传感器3-1相连通，所述压差传感器3-1用于测量所述烟草段4两端压差△P；
所述气源2-1向所述容纳腔1-4中通气或抽气，所述流量检测单元2-4与所述容纳腔1-4串联以检测其内气体流量。
其中，所述容纳腔1-4的内径为5-10mm，可容纳不同圆周的烟草段4；优选地，所述容纳腔1-4可容纳圆周为16-25mm的烟草段4。
优选地，所述容纳腔1-4两端分别设有封堵件1-2，且至少其中一个封堵件1-2能沿所述容纳腔1-4轴向移动。
优选地，所述容纳腔1-4两端的封堵件1-2之间可容纳长度不同的烟草段4，优选地，可容纳长度为5-50mm的烟草段4。
优选地，所述测量无序卷制烟丝有序率的装置还包括与所述容纳腔1-4串联的流量控制器2-3，所述流量控制器2-3用于控制所述气源2-1通入所述容 纳腔1-4内的气流的流量，优选地，可控制的气流的流量为10～35mL/s。
优选地，所述气源2-1是正压气源或是负压气源。
其中，正压气源是由正压气瓶中直接提供压缩空气，而负压气源是可以由负压气瓶直接提供负压压缩空气，或者由正压气瓶与负压发生装置或者负压风机的组合。
所述封堵件1-2为具有一定孔隙率的薄板。
优选地，所述封堵件1-2的为烧结板或是烧结网。
相对于现有技术，本发明具有以下有益效果：
1.本发明首次提出通过测量一定流速下的压差，基于多孔介质流动，假设完全有序时堆积状态下渗透系数最大，完全无序时堆积状态下渗透系数最小，通过计算被测样品烟丝堆积状态下的渗透系数与渗透系数最大值、渗透系数最小值的比较，计算获得有序率的指标。
2.通过计算获取烟草段内烟丝有序率，对无序烟丝基棒成型过程中的质量及稳定性具有重要指导作用。同时该有序率可作为烟支生产过程中的一种检测指标，对于生产过程中烟支质量稳定性的控制具有重要意义。
附图说明
图1为本发明实施例1实现测量烟草段内烟丝有序率的方法的装置的示意图；
图2为特定检测条件气流流经固件的结构示意图，箭头代表气流方向；
附图标记说明：
1-1.压差测量室，1-2.封堵件，1-4.容纳腔，2-1.气源，2-2.管道，2-2-1.
左管道，2-2-2.右管道，2-3.流量控制器，2-4.流量检测单元；3-1.压差传感器，3-1-1.第一压差接口，3-1-2.第二压差接口，4.烟草段，5.固件，6.烟丝。
具体实施方式
下面结合实施例对本发明作进一步的详细描述。
本领域技术人员将会理解，下列实施例仅用于说明本发明，而不应视为限定本发明的范围。实施例中未注明具体技术或条件者，按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用材料或设备未注明生产厂商者，均为可以通过购买获得的常规产品。
本技术领域技术人员可以理解，除非特意声明，这里使用的单数形式“一”、“一个”、“所述”和“该”也可包括复数形式。应该进一步理解的是，本发明的说明书中使用的措辞“包括”是指存在所述特征、整数、步骤、操作、元件和/或组件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。应该理解，当我们称元件被“连接”到另一元件时，它可以直接连接到其他元件，或者也可以存在中间元件。此外，这里使用的“连接”可以包括无线连接。
在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。术语“内”、“上”、“下”等指示的方位或状态关系为基于附图所示的方位或状态关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“连接”、“设有”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，根据具体情况理解上述术语在本发明中的具体含义。
本技术领域技术人员可以理解，除非另外定义，这里使用的所有术语包括技术术语和科学术语具有与本发明所属领域中的普通技术人员的一般理解相同的意义。还应该理解的是，诸如通用字典中定义的那些术语应该被理解为具有与现有技术的上下文中的意义一致的意义，并且除非像这里一样定义，不会用理想化或过于正式的含义来解释。
一种测量烟草段内烟丝有序率的方法，其包括以下步骤：
A.确定待测样品烟草段圆周φ及烟草段长度L；
B.利用气源2-1向烟草段内通入稳定气流，通过流量检测单元2-4检测气流流经烟草段的体积流量QV值，利用压差传感器3-1测量待测样品烟草段4两端的压差△P；
C.根据以下三个公式计算烟丝有序率ηi：


其中：
K为烟草段的渗透系数，A为烟草段4过流断面截面积，ρ为空气密度，g为重力加速度，Kmax定义为特定检测条件下测量得到的完全有序的烟草段4的K值的最大值，Kmin定义为特定检测条件下测量得到的完全无序的烟草段4的K值的最小值。
其中，所述完全有序为烟丝排布方向完全与气流方向保持平行，所述完全无序为烟丝排布方向完全与气流方向垂直。
所述特定检测条件为包含但不限于在与待测烟支烟草段具有相同长度的固件5中，填充有相同质量的烟丝6并具有相同的填充密度，但具有不同的堆积方式(堆积方式为完全有序时，测得的渗透系数是Kmax；堆积方式为完全无序时，测得的渗透系数是Kmin)，再通过流经相同流速的气体的检测条件。
实现上述测量烟草段内烟丝有序率的方法的装置，所述装置包括压差测量室1-1、压差传感器3-1、气源2-1、流量检测单元2-4；
所述压差测量室1-1内具有用于容纳烟草段4的容纳腔1-4，所述烟草段4的外径与所述容纳腔1-4的内径大小相同；
所述容纳腔1-4与所述压差传感器3-1相连通，所述压差传感器3-1用于测量所述烟草段4两端压差△P；
所述气源2-1向所述容纳腔1-4中通气或抽气，所述流量检测单元2-4与所述容纳腔1-4串联以检测气流流经烟草段的气体流量。
其中，所述容纳腔1-4的内径为5-10mm，可容纳不同圆周的烟草段4；优选地，所述容纳腔1-4可容纳圆周为16-25mm的烟草段4。
所述容纳腔1-4两端分别设有封堵件1-2，且至少其中一个封堵件1-2能 沿所述容纳腔1-4轴向移动。
所述容纳腔1-4两端的封堵件1-2之间可容纳长度不同的烟草段4；优选地，可容纳长度为5-50mm的烟草段4。
所述测量无序卷制烟丝有序率的装置还包括与所述容纳腔1-4串联的流量控制器2-3，所述流量控制器2-3用于控制所述气源2-1通入所述容纳腔1-4内的气流的流量，优选地，可控制的气流的流量为10～35mL/s。
所述气源2-1是正压气源或是负压气源。
其中，正压气源是由正压气瓶中直接提供压缩空气，而负压气源是可以由负压气瓶直接提供负压压缩空气，或者由正压气瓶与负压发生装置或者负压风机的组合。
所述封堵件1-2为具有一定孔隙率的薄板。
优选地，所述封堵件1-2的为烧结板或是烧结网。
实施例1
如图1所述，一种测量烟草段内烟丝有序率的装置，其包括压差测量室1-1、压差传感器3-1、气源2-1、流量检测单元2-4和流量控制器2-3；
其中，所述流量检测单元2-4可以是流量计。
所述压差测量室1-1内具有容纳烟草段4的容纳腔1-4，所述容纳腔1-4的上游与所述压差传感器3-1的第一压差接口3-1-1相连通，所述容纳腔1-4的下游与所述压差传感器3-1的第二压差接口3-1-2相连通；
所述流量检测单元2-4一端通过左管道2-2-1与所述气源2-1连通，另一端通过右管道2-2-2与所述流量控制器2-3的一端连通，所述流量控制器2-3的另一端通过管道2-2与所述容纳腔1-4的下游连通。
所述容纳腔1-4两端均设有封堵件1-2，封堵件1-2与所述容纳腔1-4同轴设置，且其中至少一个封堵件1-2能沿所述容纳腔1-4轴向方向移动，所述容纳腔1-4两端的封堵件1-2之间可容纳长度不同的烟草段4。
用上述装置测量10个具有相同长度、相同材质、相同质量以及相同填充密度但堆积方式不同的烟草段内烟丝有序率。测量方法如下：
一种测量烟草段内烟丝有序率的方法，利用上述测量烟草段内烟丝有序率的装置，包括以下步骤：
A.确待测样品烟草段4圆周φ＝22.8mm及烟草段4长度L＝15mm；
B.根据烟草段4圆周φ，选择合适的压差测量室1-1，将待测烟草段4放入容纳腔1-4内，调整封堵件1-2位置，使容纳腔1-4两端的封堵件1-2分别贴合在烟草段4的两端。
打开气源2-1,利用气源2-1向容纳腔1-4内通入稳定气流，调整流量控制器2-3，使气流的流量达到设定流量，即可开始测量，此时，用流量检测单元2-4检测QV值大小，测量QV为17.5mL/s，通过压力传感器3-1测量容纳腔1-4上游和下游之间的压差为△P1，根据已知的容纳腔1-4上游的封堵件1-2所产生的压降为△P2＝50Pa，容纳腔1-4下游的封堵件1-2所产生的压降为△P3＝17Pa，计算△P＝△P1-△P2-△P3；
根据以下三个公式计算烟丝有序率ηi：


其中：
K为烟支烟草段的渗透系数，A为烟草段4过流断面截面积，ρ＝1.205kg/m3为空气密度，g为重力加速度，
其中，相同测量条件下，即在具有相同长度的固件中，填充有相同质量的烟丝并具有相同的填充密度，但具有不同的堆积方式，再通过流经相同流速的气体。测量所得烟草段的渗透系数最大值Kmax为0.000472m/s，烟草段的渗透系数最小值Kmin为0.000059m/s。
得到10个样品烟草段的烟丝有序率如下表1：
表1

可以理解，本发明是通过一些实施例进行描述的，本领域技术人员知悉的，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等效替换。另外，在本发明的教导下，可以对这些特征和实施例进行修改以适应具体的情况及材料而不会脱离本发明的精神和范围。因此，本发明不受此处所公开的具体实施例的限制，所有落入本申请的权利要求范围内的实施例都属于本发明所保护的范围内。

Claims (7)

  1. 一种测量烟草段内烟丝有序率的方法，其特征在于，包括以下步骤：
    A.确定待测样品烟支烟草段圆周φ及烟草段长度L；
    B.利用气源(2-1)向烟草段内通入稳定气流，通过流量检测单元(2-4)检测气流流经烟草段的体积流量QV值，利用压差传感器(3-1)测量待测样品烟草段(4)两端的压差△P；
    C.根据以下三个公式计算烟丝有序率ηi：


    其中：
    K为待测烟支烟草段的渗透系数，A为烟草段4过流断面截面积，ρ为空气密度，g为重力加速度，Kmax定义为特定检测条件下测量得到的完全有序的烟草段4的K值，Kmin定义为特定检测条件下测量得到的完全无序的烟草段4的K值。
  2. 根据权利要求1所述的测量烟草段内烟丝有序率的方法，其特征在于，所述完全有序为烟丝排布方向完全与气流方向保持平行，所述完全无序为烟丝排布方向完全与气流方向垂直。
  3. 一种用于实现权利要求1-2任一项所述测量烟草段内烟丝有序率的方法的装置，其特征在于，包括压差测量室(1-1)、压差传感器(3-1)、气源(2-1)、流量检测单元(2-4)；
    所述压差测量室(1-1)内具有用于容纳烟草段(4)的容纳腔(1-4)，所述烟草段(4)的外径与所述容纳腔(1-4)的内径相适应；
    所述容纳腔(1-4)与所述压差传感器(3-1)相连通，所述压差传感器(3-1)用于测量所述烟草段(4)两端压差△P；
    所述气源(2-1)向所述容纳腔(1-4)中通气或抽气，所述流量检测单元 (2-4)与所述容纳腔(1-4)串联以检测其内气体体积流量。
  4. 根据权利要求3所述的测量烟草段内烟丝有序率的装置，其特征在于，所述容纳腔(1-4)两端分别设有封堵件(1-2)，且至少其中一个封堵件(1-2)能沿所述容纳腔(1-4)轴向移动。
  5. 根据权利要求3所述的测量烟草段内烟丝有序率的装置，其特征在于，所述测量烟草段烟丝有序率的装置还包括与所述容纳腔(1-4)串联的流量控制器(2-3)，所述流量控制器(2-3)用于控制所述气源(2-1)通入所述容纳腔(1-4)内的气流的体积流量。
  6. 根据权利要求3所述的测量烟草段内烟丝有序率的装置，其特征在于，所述气源(2-1)是正压气源或是负压气源。
  7. 根据权利要求4所述的测量烟草段内烟丝有序率的装置，其特征在于，所述封堵件(1-2)为烧结板或是烧结网。
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