WO2018196575A1 - 双模减压器 - Google Patents

双模减压器 Download PDF

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Publication number
WO2018196575A1
WO2018196575A1 PCT/CN2018/081885 CN2018081885W WO2018196575A1 WO 2018196575 A1 WO2018196575 A1 WO 2018196575A1 CN 2018081885 W CN2018081885 W CN 2018081885W WO 2018196575 A1 WO2018196575 A1 WO 2018196575A1
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Prior art keywords
sampling head
gas
pressure
air outlet
valve
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PCT/CN2018/081885
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English (en)
French (fr)
Inventor
谢云芳
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Wuxi Techmac Scientific Instrument Co Ltd
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Wuxi Techmac Scientific Instrument Co Ltd
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Priority to DK18792161.4T priority Critical patent/DK3553490T3/da
Priority to EP18792161.4A priority patent/EP3553490B8/en
Priority to US16/474,073 priority patent/US11415489B2/en
Priority to ES18792161T priority patent/ES2881764T3/es
Publication of WO2018196575A1 publication Critical patent/WO2018196575A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2208—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with impactors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N2001/222—Other features

Definitions

  • the invention belongs to the technical field of pressure reducers and relates to a dual mode pressure reducer.
  • Compressed gases have a wide range of applications in industrial production such as pharmaceuticals, food and beverages.
  • the quality of the compressed gas in direct contact with the product directly affects the quality of the product, so there are strict requirements for the quality control of compressed gas, among which particles and microorganisms are two important indicators.
  • the usual detection methods include plate sampling method, sterile filter sampling method, liquid medium sampling method, and vacuum filtration enrichment method.
  • the flat sampling method is susceptible to the influence of outside air, making the detection results greatly deviate from reality.
  • Sterile filter sampling method During the sampling process, a large part of the gas is discharged from the exhaust port, so that the microorganisms in the gas are not trapped on the filter membrane, which affects the accuracy of the detection.
  • Liquid media sampling methods do not allow quantitative counting of microorganisms.
  • the vacuum suction filtration enrichment method combines the advantages of the above several methods, it is necessary to prepare a variety of experimental consumables before sampling, and it is necessary to maintain a fixed gas flow rate during the sampling process, and the operation flow is complicated.
  • this type of sampler has only a single sampling function and does not have the function of depressurizing the high pressure gas to a normal pressure state.
  • the present invention is directed to the above problem, and provides a dual-mode pressure reducer which adopts a structure in which a sampling head is separated from a main machine, which is convenient, simple, and flexible, and can effectively realize microbial collection of an equal pressure state and a high-pressure gas diffuser.
  • a dual-mode pressure reducer includes: a sampling head lower case and a sampling head upper case connected to each other, and a top of the sampling head lower case is provided with a culture dish holder for fixing the culture dish
  • the top of the upper part of the sampling head is arranged to be blocked by gas, and the bottom part of the upper part of the sampling head is provided with a gas dividing screen;
  • the gas pipe joint of the lower part of the sampling head is connected to the through-wall gas joint through a pipe, and the gas outlet end of the through-wall gas joint is connected with the T-type gas joint, One end of the T-type gas joint is connected to the pressure sensor, and the other end is connected to the safety valve.
  • the air outlet of the safety valve is connected to the air inlet of the flow sensor, the air outlet of the flow sensor is connected to the pressure reducing valve, and the air outlet of the pressure reducing valve is connected to the air inlet of the proportional valve.
  • the air outlet of the proportional valve is connected to the air outlet adapter block, and the pressure detecting interface is provided with a pressure detecting interface, and the pressure detecting interface is connected to the air inlet of the electromagnetic valve through a hose, and the air outlet and the differential pressure sensor of the electromagnetic valve One detection port is connected, the other detection port of the differential pressure sensor is connected to the atmosphere, and the air outlet of the air outlet adapter block is connected to the air outlet connector.
  • the lower head of the sampling head and the upper casing of the sampling head are connected by a fastening handle.
  • the casing of the upper casing of the sampling head corresponds to a truncated cone shape in which a portion between the gas separation blockage and the gas separation sieve plate is small and large.
  • the air pipe joint of the lower casing of the sampling head and the axis of the upper casing of the sampling head are perpendicular to each other.
  • the technical effect of the invention is that the product of the invention has simple and reasonable structure, and the design concept is ingenious, and the function of microbial collection in the same pressure state can be realized, and the function of the high-pressure gas diffuser can also be realized.
  • Figure 1 is a schematic view of the structure of the present invention.
  • the air outlet port block 10 includes a sampling head upper case 1, a gas separation block 2, a fastening handle 3, a gas separation sieve plate 4, a culture dish holder 5, a sampling head lower case 6, a safety valve 7, a flow sensor 8, a proportional valve 9,
  • the air outlet port block 10 the air outlet port 11, the pressure detecting port 12, the pressure reducing valve 13, the pressure sensor 14, the electromagnetic valve 15, the differential pressure sensor 16, the through-wall gas joint 17, the T-type gas joint 18, and the like.
  • the present invention is a dual mode pressure reducer comprising a sampling head lower case 6 and a sampling head upper case 1 which are connected to each other, and a top plate of the sampling head lower case 6 is provided with a petri dish for fixing the culture dish.
  • the bracket 5 is provided with a gas separation block 2 at the top of the upper shell 1 of the sampling head, and a gas separation screen plate 4 is arranged at the bottom of the upper shell 1 of the sampling head; the gas pipe joint of the lower shell 6 of the sampling head is connected to the through-wall gas joint 17 through a pipe, and the gas-filled joint 17
  • the outlet end is connected to the T-type gas joint 18, one end of the T-type gas joint 18 is connected to the pressure sensor 14, and the other end is connected to the safety valve 7, the air outlet of the safety valve 7 is connected to the air inlet of the flow sensor 8, and the air outlet of the flow sensor 8 is connected.
  • the pressure reducing valve 13, the air outlet of the pressure reducing valve 13 is connected to the air inlet of the proportional valve 9, the air outlet of the proportional valve 9 is connected to the air outlet adapter block 10, and the air outlet adapter block 10 is provided with a pressure detecting interface 12, the pressure
  • the detecting interface 12 is connected to the air inlet of the electromagnetic valve 15 through a hose, the air outlet of the electromagnetic valve 15 is connected to one detecting port of the differential pressure sensor 16, and the other detecting port of the differential pressure sensor 16 is connected to the atmosphere, and the air outlet is switched.
  • the air outlet of the block 10 is connected to the air outlet joint 11.
  • sampling head lower case 6 and the sampling head upper case 1 are connected by a fastening handle 3.
  • the casing of the upper casing 1 of the sampling head corresponds to a truncated cone shape which is slightly smaller than the portion between the gas separation block 2 and the gas separation sieve plate 4.
  • the air pipe joint of the lower casing 6 of the sampling head is perpendicular to the axis of the upper casing 1 of the sampling head.
  • the function of microbial collection in equal pressure state is realized: the through-wall gas joint 17 is externally connected to the sampling head, the sampling head inlet is connected to the high-pressure gas source, and the outlet port joint 11 is connected to the muffler.
  • the solenoid valve 15 is closed to protect the differential pressure sensor 16 from damage due to excessive pressure differentials.
  • the dynamic pressure and mass flow rate in the sampling head are detected in real time by the pressure sensor 14 and the flow sensor 8 to control the opening degree of the proportional valve 9 to achieve the set pressure flow rate.
  • the proportional valve 9 is closed when the gas sampling volume reaches the set gas sampling volume.
  • the high-pressure gas source is turned off, and the opening degree of the proportional valve 9 is adjusted by detecting the rate of change of the pressure sensor 14, thereby realizing the function of slowly decompressing the high-pressure gas in the sampling head.
  • the pressure reducing valve 13 serves to protect the proportional valve 9 from the impact of high pressure gas.
  • the high-pressure gas diffuser The function of the high-pressure gas diffuser is realized: the high-pressure gas source is directly connected to the outside of the through-wall gas joint 17, and the gas outlet joint 11 uses a pagoda joint.
  • the solenoid valve 15 is opened to ensure that the differential pressure sensor 16 can detect the pressure within the air outlet adapter block 10.
  • the detection control circuit is used to monitor the pressure in the air outlet adapter block 10 through the differential pressure sensor 16, thereby realizing the automatic adjustment of the opening degree of the proportional valve 9, thereby ensuring accurate provision of the required gas flow rate for the rear end detecting device.
  • the sampling head is separated from the host to make the sampling head operation more convenient, simple and flexible.
  • sampling head upper shell 1 and the sampling head lower shell 6 are connected by a fastening handle, which makes the operation simpler and more convenient; the upper and lower shell connections are more firm and safe.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

一种双模减压器，属于减压器技术领域，包括相互连接的采样头下壳（6）与采样头上壳（1），采样头下壳（6）顶部设有用于固定培养皿的培养皿支架（5），采样头上壳（1）顶部设置分气堵塞（2），采样头上壳（1）底部设置分气筛板（4）；采样头下壳（6）的气管接头通过管道连接穿墙气接头（17），穿墙气接头（17）的出气端连接T型气接头（18），T型气接头（18）一端连接压力传感器（14），另一端连接安全阀（7），安全阀（7）的出气口连接流量传感器（8）的进气口，流量传感器（8）的出气口连接减压阀（13），减压阀（13）的出气口连接比例阀（9）的进气口，比例阀（9）的出气口连接出气口转接块（10）。该双模减压器结构简单、合理，设计构思巧妙，可以实现等压力状态微生物采集的功能，同时还可以实现高压气体扩散器的功能。

Description

双模减压器 技术领域
本发明属于减压器技术领域，涉及一种双模减压器。
背景技术
在制药、食品饮料等工业生产中，压缩气体具有广泛的应用。与产品直接接触的压缩气体的品质直接影响了产品质量的好坏，所以对压缩气体的质量控制有着严格的要求，其中粒子和微生物是两个重要的指标。
在压缩气体的微生物检测中，通常的检测方式有平板取样法、无菌滤膜取样法、液体培养基取样法和真空抽滤富集法等。平板取样法容易受到外界空气的影响，使得检测结果大大偏离实际。无菌滤膜取样法在取样过程中，有很大一部分气体从排气口排出，由此气体中的微生物没有被截留在滤膜上，影响了检测的准确性。液体培养基取样法无法对微生物进行定量的计数。真空抽滤富集法虽然集合了以上几个方法的优点，但是取样前需要准备多种实验耗材，取样过程中需要保持固定的气体流速，操作流程复杂。目前有一类压缩气体采样器，可以直接连接压缩气体进行采样。但是这类采样器仅有单一的采样功能，不具备将高压气体减压至常压状态的功能。
发明内容
本发明针对上述问题，提供一种双模减压器，该减压器采用采样头与主机分离的结构，操作方便、简单、灵活，同时可以有效实现等压力状态微生物采集和高压气体扩散器的功能。
按照本发明的技术方案：一种双模减压器，其特征在于：包括相互连接的采样头下壳与采样头上壳，所述采样头下壳顶部设有用于固定培养皿的培养皿支架，采样头上壳顶部设置分气堵塞，采样头上壳底部设置分气筛板；采样头下壳的气管接头通过管道连接穿墙气接头，穿墙气接头的出气端连接T型气接头，T型气接头一端连接压力传感器，另一端连接安全阀，安全阀的出气口连接流量传感器的进气口，流量传感器的出气口连接减压阀，减压阀的出气口连接比例阀的进气口，比例阀的出气口连接出气口转接块，出气口转接块上设有压力检测接口，压力检测接口通过软管连接到电磁阀的进气口，电磁阀的出气口与差压传感器的一个检测口相连接，差压传感器的另一个检测口连接大气，出气口转接块的出气口连接出气口接头。
作为本发明的进一步改进，所述采样头下壳与采样头上壳之间通过紧固手柄相连接。
作为本发明的进一步改进，所述采样头上壳的壳体上对应于分气堵塞与分气筛板之间部分呈上小下大的圆锥台状。
作为本发明的进一步改进，所述采样头下壳的气管接头与采样头上壳的轴线相互垂直。
本发明的技术效果在于：本发明产品结构简单、合理，设计构思巧妙，可以实现等压力状态微生物采集的功能，同时还可以实现高压气体扩散器的功能。
附图说明
图1为本发明的结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的说明。
图1中，包括采样头上壳1、分气堵塞2、紧固手柄3、分气筛板4、培养皿支架5、采样头下壳6、安全阀7、流量传感器8、比例阀9、出气口转接块10、出气口接头11、压力检测接口12、减压阀13、压力传感器14、电磁阀15、差压传感器16、穿墙气接头17、T型气接头18等。
如图1所示，本发明是一种双模减压器，包括相互连接的采样头下壳6与采样头上壳1，所述采样头下壳6顶部设有用于固定培养皿的培养皿支架5，采样头上壳1顶部设置分气堵塞2，采样头上壳1底部设置分气筛板4；采样头下壳6的气管接头通过管道连接穿墙气接头17，穿墙气接头17的出气端连接T型气接头18，T型气接头18一端连接压力传感器14，另一端连接安全阀7，安全阀7的出气口连接流量传感器8的进气口，流量传感器8的出气口连接减压阀13，减压阀13的出气口连接比例阀9的进气口，比例阀9的出气口连接出气口转接块10，出气口转接块10上设有压力检测接口12，压力检测接口12通过软管连接到电磁阀15的进气口，电磁阀15的出气口与差压传感器16的一个检测口相连接，差压传感器16的另一个检测口连接大气，出气口转接块10的出气口连接出气口接头11。
采样头下壳6与采样头上壳1之间通过紧固手柄3相连接。
采样头上壳1的壳体上对应于分气堵塞2与分气筛板4之间部分呈上小下大的圆锥台状。
采样头下壳6的气管接头与采样头上壳1的轴线相互垂直。
等压力状态微生物采集的功能实现：穿墙气接头17外部连接采样头，采样头进气口连接高压气源，出气口接头11连接消音器。电磁阀15关闭，用于保护差压传感器16，避免其由于过大的压差而损坏。通过压力传感器14和流量传感器8实时检测采样头中的动态压力和质量流量来控制比例阀9的开合度，以达到设定的带压流量。在气体采样体积达到设置的气体采样体积时，关闭比例阀9。采样完成后，关闭高压气源，通过检测压力传感器14的变化率来调节比例阀9的开合度，实现采样头中的高压气体缓慢解压的功能。减压阀13用于保护比例阀9免受高压气体的冲击。
高压气体扩散器的功能实现：穿墙气接头17外部直接连接高压气源，出气口接头11使用宝塔接头。电磁阀15打开，保证差压传感器16能检测到出气口转接块10内的压强。采用检测控制电路，通过差压传感器16监测出气口转接块10内的压强，实现自动调节比例阀9的开合度，保证精准的为后端检测设备提供其所需要的气体流量。如图1所示，采样头采用与主机分离的结构，使采样头操作更加方便、简单、灵活。
采样头上壳1与采样头下壳6采用紧固手柄连接，使操作更加简单，方便；上下壳连接更加牢固、安全。

Claims (4)

  1. 一种双模减压器，其特征在于：包括相互连接的采样头下壳(6)与采样头上壳(1)，所述采样头下壳(6)顶部设有用于固定培养皿的培养皿支架(5)，采样头上壳(1)顶部设置分气堵塞(2)，采样头上壳(1)底部设置分气筛板(4)；采样头下壳(6)的气管接头通过管道连接穿墙气接头(17)，穿墙气接头(17)的出气端连接T型气接头(18)，T型气接头(18)一端连接压力传感器(14)，另一端连接安全阀(7)，安全阀(7)的出气口连接流量传感器(8)的进气口，流量传感器(8)的出气口连接减压阀(13)，减压阀(13)的出气口连接比例阀(9)的进气口，比例阀(9)的出气口连接出气口转接块(10)，出气口转接块(10)上设有压力检测接口(12)，压力检测接口(12)通过软管连接到电磁阀(15)的进气口，电磁阀(15)的出气口与差压传感器(16)的一个检测口相连接，差压传感器(16)的另一个检测口连接大气，出气口转接块(10)的出气口连接出气口接头(11)。
  2. 如权利要求1所述的双模减压器，其特征在于：所述采样头下壳(6)与采样头上壳(1)之间通过紧固手柄(3)相连接。
  3. 如权利要求1所述的双模减压器，其特征在于：所述采样头上壳(1)的壳体上对应于分气堵塞(2)与分气筛板(4)之间部分呈上小下大的圆锥台状。
  4. 如权利要求1所述的双模减压器，其特征在于：所述采样头下壳(6)的气管接头与采样头上壳(1)的轴线相互垂直。
PCT/CN2018/081885 2017-04-24 2018-04-04 双模减压器 Ceased WO2018196575A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK18792161.4T DK3553490T3 (da) 2017-04-24 2018-04-04 Dual-mode trykreducer
EP18792161.4A EP3553490B8 (en) 2017-04-24 2018-04-04 Dual-mode pressure reducer
US16/474,073 US11415489B2 (en) 2017-04-24 2018-04-04 Dual-mode high pressure diffuser
ES18792161T ES2881764T3 (es) 2017-04-24 2018-04-04 Reductor de presión de modo dual

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Application Number Priority Date Filing Date Title
CN201710271615.1 2017-04-24
CN201710271615.1A CN107063765B (zh) 2017-04-24 2017-04-24 双模减压器

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DK (1) DK3553490T3 (zh)
ES (1) ES2881764T3 (zh)
WO (1) WO2018196575A1 (zh)

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CN107063765B (zh) * 2017-04-24 2023-07-28 麦克微尔(上海)科技有限公司 双模减压器

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