JP2779871B2 - Pore distribution measuring device - Google Patents
Pore distribution measuring deviceInfo
- Publication number
- JP2779871B2 JP2779871B2 JP3082071A JP8207191A JP2779871B2 JP 2779871 B2 JP2779871 B2 JP 2779871B2 JP 3082071 A JP3082071 A JP 3082071A JP 8207191 A JP8207191 A JP 8207191A JP 2779871 B2 JP2779871 B2 JP 2779871B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- inlet valve
- vacuum pump
- pressure
- sample cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011148 porous material Substances 0.000 title claims description 9
- 238000005259 measurement Methods 0.000 description 18
- 238000001179 sorption measurement Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、固体サンプルにガスを
吸着させ吸着量の変位により、その固体物性値の細孔分
布、表面積等を測定する細孔分布測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pore distribution measuring apparatus for adsorbing a gas on a solid sample and measuring the pore distribution, surface area and the like of the physical properties of the solid by the displacement of the amount of adsorption.
【０００２】[0002]
【従来の技術】従来、細孔分布測定装置としては、第２
図に示す定容量法と言われる装置と、第３図に示す定流
量法と言われる２種の装置が知られている。2. Description of the Related Art Conventionally, as a pore distribution measuring device,
An apparatus called a constant volume method shown in the figure and two kinds of apparatuses called a constant flow rate method shown in FIG. 3 are known.
【０００３】第２図に示す細孔分布測定装置は、吸着ガ
スを導き一定圧力に調整する圧力調整器（２２）とガス
入口弁（２３）と圧力検出器１（２４）とサンプルセル
入口弁（２５）と圧力検出器２（２６）とサンプルセル
（２７）を連ねて設け前記ガス入口弁（２３）とサンプ
ルセル入口弁（２５）との間に真空ポンプ入口弁（２
８）及び真空ポンプ（２９）を設け、前記各弁（２３）
（２５）（２８）を制御する制御部（３０）と圧力信号
を入力演算する演算部（３１）と演算及び制御結果を出
力する出力部（３２）を具備することを特徴とする。The pore distribution measuring device shown in FIG. 2 comprises a pressure regulator (22) for guiding adsorbed gas to a constant pressure, a gas inlet valve (23), a pressure detector 1 (24), and a sample cell inlet valve. (25), a pressure detector 2 (26) and a sample cell (27) are connected in series, and a vacuum pump inlet valve (2) is provided between the gas inlet valve (23) and the sample cell inlet valve (25).
8) and a vacuum pump (29).
(25) A control unit (30) for controlling (28), a calculation unit (31) for inputting and calculating a pressure signal, and an output unit (32) for outputting calculation and control results.
【０００４】本装置で測定を行う方法は、ガス入口弁
（２３）を閉じ、真空ポンプ入口弁（２８）とサンプル
セル入口弁（２５）を開き、予め真空ポンプ（２９）で
サンプルセル（２７）内部の空気及びサンプル（１３）
の湿気を取り除く。次に真空ポンプ入口弁（２８）を閉
じたままガス入口弁（２３）とサンプルセル入口弁（２
５）を交互に開閉し吸着ガスを段階的にセンプルセル
（２７）に送り込みその都度ガスの圧力を圧力検出器
（２４）（２６）で測定するものである。測定された圧
力データをガス吸着量に換算するため３個の弁（２３）
（２５）（２８）に囲まれた部分の内容積とサンプルセ
ル（２７）の内容積及び吸着ガス温度を予め登録し演算
部（３１）にて演算処理が行われる。[0004] In the method of performing measurement with this apparatus, the gas inlet valve (23) is closed, the vacuum pump inlet valve (28) and the sample cell inlet valve (25) are opened, and the sample cell (27) is previously opened by the vacuum pump (29). ) Internal air and sample (13)
Remove moisture. Next, with the vacuum pump inlet valve (28) closed, the gas inlet valve (23) and the sample cell inlet valve (2) are closed.
5) is alternately opened and closed, and the adsorbed gas is sent stepwise into the simple cell (27), and the pressure of the gas is measured by the pressure detectors (24) and (26) each time. Three valves (23) to convert measured pressure data to gas adsorption
(25) The internal volume of the portion surrounded by (28), the internal volume of the sample cell (27), and the temperature of the adsorbed gas are registered in advance, and the arithmetic unit (31) performs arithmetic processing.
【０００５】しかし本装置で送り込まれる吸着ガスの量
は、定量性が無く毎回減少すると言う問題があった。こ
れはサンプルセル入口弁（２５）を開けてもサンプルセ
ル（２７）内の圧力と平行する迄しか吸着ガスは入ら
ず、残った圧力によるためで、この為この残圧力を使い
毎回送り込まれるガス量を演算し求めなければならない
さらにガス量が減少することは、測定できる圧力変化も
減少するため測定装置としての分解能（測定点数）が低
いという問題もあった。[0005] However, there is a problem that the amount of the adsorbed gas sent by the apparatus is not quantitative and decreases every time. This is because even if the sample cell inlet valve (25) is opened, the adsorbed gas enters only until it is parallel to the pressure in the sample cell (27) and depends on the remaining pressure. If the amount of gas, which must be calculated and calculated, further decreases, there is also a problem that the resolution (number of measurement points) as a measuring device is low because the measurable pressure change also decreases.
【０００６】第３図に示す細孔分布測定装置は、吸着ガ
スを導き一定圧力に調整する圧力調整器（４２）とガス
入口弁（４３）と吸着ガスを一定流量に制御する流量制
御機（４４）とサンプルセル入口弁（４５）と圧力検出
器（４６）とサンプルセル（４７）を連ねて設け前記流
量制御機（４４）とサンプルセル入口弁（４５）との間
に真空ポンプ入口弁（４８）及び真空ポンプ（４９）を
設け、前記各弁（４３）（４５）（４８）と流量制御機
（４４）を制御する制御部（５０）と圧力信号を入力演
算する演算部（５１）と演算及び制御結果を出力する出
力部（５２）を具備することを特徴とする。The pore distribution measuring device shown in FIG. 3 comprises a pressure regulator (42) for guiding the adsorbed gas to a constant pressure, a gas inlet valve (43), and a flow controller for controlling the adsorbed gas to a constant flow rate. 44), a sample cell inlet valve (45), a pressure detector (46), and a sample cell (47) connected in series to provide a vacuum pump inlet valve between the flow controller (44) and the sample cell inlet valve (45). (48) and a vacuum pump (49), a control unit (50) for controlling the valves (43), (45), (48) and the flow controller (44), and a calculation unit (51) for inputting and calculating a pressure signal. ) And an output section (52) for outputting the calculation and control results.
【０００７】本装置で測定を行う方法は、ガス入口弁
（４３）を閉じ真空ポンプ入口弁（４８）とサンプルセ
ル入口弁（４５）を開き、予め真空ポンプ（４９）でサ
ンプルセル（４７）内部の空気及びサンプル（１３）の
湿気を取り除く。次に真空ポンプ入口弁（４８）を閉じ
たままガス入口弁（４３）とサンプルセル入口弁（４
５）を開き流量制御機（４４）で吸着ガスを一定流量に
制御しながらサンプルセル（４７）に吸着ガスを送り込
む、その時一定時間間隔でガスの圧力を圧力検出器（４
６）で測定するものである。測定された圧力データをガ
ス吸着量に換算するためサンプルセル（４７）の内容積
及び吸着ガス温度を予め登録し且つ測定時の吸着ガス流
量と測定時間を記録し演算部（５１）にて演算処理が行
われる。[0007] The method of performing measurement with this apparatus is as follows. The gas inlet valve (43) is closed, the vacuum pump inlet valve (48) and the sample cell inlet valve (45) are opened, and the sample cell (47) is previously opened by the vacuum pump (49). Remove the air inside and the moisture of the sample (13). Next, with the vacuum pump inlet valve (48) closed, the gas inlet valve (43) and the sample cell inlet valve (4) are closed.
5) Open the adsorbed gas into the sample cell (47) while controlling the adsorbed gas at a constant flow rate by the flow controller (44). At that time, the pressure of the gas is detected at a fixed time interval by the pressure detector (4).
Measured in 6). In order to convert the measured pressure data into the gas adsorption amount, the internal volume of the sample cell (47) and the adsorption gas temperature are registered in advance, and the adsorption gas flow rate and the measurement time at the time of measurement are recorded and calculated by the calculation unit (51). Processing is performed.
【０００８】しかし本装置で送り込まれる吸着ガスは、
連続して流すため流量を最小限に制御しても完全に吸着
平衡状態（ある圧力でサンプルが吸着できるガス量まで
到達し圧力が安定する状態）にならぬままガスが送り込
まれるため測定誤差を発生するという問題があった。[0008] However, the adsorbed gas sent by this apparatus is:
Even if the flow rate is controlled to a minimum because of continuous flow, the gas is sent without being in a completely adsorption equilibrium state (a state in which the gas reaches the gas amount at which the sample can be adsorbed at a certain pressure and the pressure stabilizes). There was a problem that occurred.
【０００９】[0009]
【発明が解決しようとする課題】本発明は、上記事情に
鑑みてなされたものであり、測定時の吸着ガス注入の定
量性の向上と分解能（測定点数）の向上、さらに測定精
度の向上を目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to improve the quantitativeness, the resolution (number of measurement points) of the adsorption gas injection at the time of measurement, and the measurement accuracy. Aim.
【００１０】[0010]
【課題を解決するための手段】定量ガス注入器（４）に
ガス入口弁（３）とガス出口弁（５）を設け、吸着ガス
を導き一定圧力に調整する圧力調整器（２）を前記ガス
入口弁（３）に設け、前記ガス出口弁（５）に圧力検出
器（７）と真空ポンプ入口弁（８）と着脱可能な手段で
サンプルセル（６）を設け、前記真空ポンプ入口弁
（８）に真空ポンプ（９）を設け、前記各弁（３）
（５）（８）と定量ガス注入器（４）を制御する制御部
（１０）と圧力信号を入力演算する演算部（１１）と演
算及び制御結果を出力する出力部（１２）を具備するす
るものである。A gas inlet valve (3) and a gas outlet valve (5) are provided in a fixed gas injector (4), and a pressure regulator (2) for guiding adsorbed gas and adjusting the pressure to a constant pressure is provided. A gas inlet valve (3), a sample cell (6) provided at the gas outlet valve (5) by means of a pressure detector (7) and a vacuum pump inlet valve (8) detachable from the gas outlet valve (5); (8) is provided with a vacuum pump (9), and each of the valves (3)
(5) A control unit (10) for controlling (8), a fixed-quantity gas injector (4), a calculation unit (11) for inputting and calculating a pressure signal, and an output unit (12) for outputting calculation and control results. Is what you do.
【００１１】[0011]
【作用】以下に、上記構成の細孔分布測定装置の作用を
説明する。The operation of the pore distribution measuring device having the above configuration will be described below.
【００１２】本装置で測定を行う方法は、まずガス出口
弁（５）を閉じ真空ポンプ入口弁（８）を開き、予め真
空ポンプ（９）でサンプルセル（７）内部の空気及びサ
ンプル（１３）の湿気を取り除き真空ポンプ入口弁
（８）を閉じる。次にガス入口弁（３）を開き定量ガス
注入器（４）に吸着ガスを一定量取り込みガス入口弁
（３）を閉じる。次にガス出口弁（５）を開きサンプル
セル（６）に吸着ガスを送り込みガス出口弁（５）を閉
じる。その時、吸着平衡に到達するまで一定時間保管の
後ガスの圧力を圧力検出器（７）で測定する。このガス
の注入操作を繰り返しおこなう。測定された圧カデータ
をガス吸着量に換算するためサンプルセル（６）の内容
積と、ガス出口弁（５）と真空ポンプ入口弁（８）で囲
む部分の内容積及び吸着ガス温度と注入ガス量を予め登
録し演算部（１１）にて演算処理を行う。The method of measuring with this apparatus is as follows. First, the gas outlet valve (5) is closed and the vacuum pump inlet valve (8) is opened, and the air inside the sample cell (7) and the sample (13) are previously opened by the vacuum pump (9). ) And the vacuum pump inlet valve (8) is closed. Next, the gas inlet valve (3) is opened, a fixed amount of adsorbed gas is taken into the fixed amount gas injector (4), and the gas inlet valve (3) is closed. Next, the gas outlet valve (5) is opened, the adsorption gas is sent to the sample cell (6), and the gas outlet valve (5) is closed. At this time, the pressure of the gas is measured by a pressure detector (7) after storage for a certain period of time until the adsorption equilibrium is reached. This gas injection operation is repeated. In order to convert the measured pressure data to the gas adsorption amount, the internal volume of the sample cell (6), the internal volume of the portion enclosed by the gas outlet valve (5) and the vacuum pump inlet valve (8), the temperature of the adsorbed gas, and the injected gas The amount is registered in advance, and the calculation unit (11) performs a calculation process.
【００１３】[0013]
【実施例】以下に、本発明の実施例について詳細に説明
する。Embodiments of the present invention will be described below in detail.
【００１４】注射器もしくはシリンダーもしくは定量ポ
ンプなどで構成する定量ガス注入器（４）にガス入口弁
（３）とガス出口弁（５）を設け、吸着ガスを導き一定
圧力に調整する圧力調整器（２）を前記ガス入口弁
（３）に設け、前記ガス出口弁（５）に圧力検出器
（７）と真空ポンプ入口弁（８）と着脱可能な手段でサ
ンプルセル（６）を設け、前記真空ポンプ入口弁（８）
に真空ポンプ（９）を設け、前記各弁（３）（５）
（８）と定量ガス注入器（４）を制御する制御部（１
０）と圧力信号を入力演算する演算部（１１）と演算及
び制御結果を画面、プリンタープロッター等で出力する
出力部（１２）を具備することを特徴とし、吸着ガスも
しくはサンプル（１３）の特性により、サンプル（１
３）の除湿効果を補うヒーター（１５）や液化ガスもし
くは恒温溶媒を入れる恒温容器（１４）を適便使用する
細孔分布測定装置である。[0014] A gas inlet valve (3) and a gas outlet valve (5) are provided in a metering gas injector (4) composed of a syringe, a cylinder or a metering pump, etc., and a pressure regulator (5) for guiding adsorbed gas and adjusting it to a constant pressure. 2) is provided on the gas inlet valve (3), and the gas outlet valve (5) is provided with a sample cell (6) by means detachable from the pressure detector (7) and the vacuum pump inlet valve (8); Vacuum pump inlet valve (8)
A vacuum pump (9) is provided in each of the valves (3) and (5).
(8) and a control unit (1) for controlling the fixed-quantity gas injector (4)
0) and a calculation unit (11) for inputting and calculating a pressure signal, and an output unit (12) for outputting the calculation and control results on a screen, a printer plotter, or the like. By the sample (1
This is a pore distribution measuring device which suitably uses a heater (15) for supplementing the dehumidifying effect of 3) and a thermostatic container (14) for holding a liquefied gas or a thermostatic solvent.
【００１５】本装置で測定を行う方法は、まずガス出口
弁（５）を閉じ真空ポンプ入口弁（８）を開き、予め真
空ポンプ（９）でサンプルセル（６）内部の空気及びサ
ンプル（１３）の湿気を取り除き真空ポンプ入口弁
（８）を閉じる。The method of performing measurement with the present apparatus is as follows. First, the gas outlet valve (5) is closed and the vacuum pump inlet valve (8) is opened, and the air and the sample (13) inside the sample cell (6) are previously opened by the vacuum pump (9). ) And the vacuum pump inlet valve (8) is closed.
【００１６】次にガス入口弁（３）を開き定量ガス注入
器（４）に吸着ガスを一定量取り込みガス入口弁（３）
を閉じる。次にガス出口弁（５）を開きサンプルセル
（６）に吸着ガスを定量ガス注入器（４）を制御し送り
込みガス出口弁（５）を閉じるこの様に吸着ガスは毎回
定量づつ注入される。Next, the gas inlet valve (3) is opened, and a fixed amount of the adsorbed gas is taken into the fixed amount gas injector (4).
Close. Next, the gas outlet valve (5) is opened, the amount of the adsorbed gas is measured into the sample cell (6), and the gas injection valve (4) is controlled and the gas outlet valve (5) is closed. .
【００１７】その時、吸着平衡に到達するまで一定時間
保管の後ガスの圧力を圧力検出器（７）で測定するため
測定誤差の少ない測定が可能となる。上記、吸着ガスの
注入操作を繰り返しおこなうが、そのとき注入される吸
着ガス量は十分微量とできるため分解能（測定点数）も
高い測定が可能である。At this time, since the pressure of the gas is measured by the pressure detector (7) after storage for a certain period of time until the adsorption equilibrium is reached, measurement with a small measurement error becomes possible. The above-described operation of injecting the adsorbed gas is repeatedly performed. At this time, the amount of the adsorbed gas to be injected can be sufficiently small, so that measurement with high resolution (number of measurement points) can be performed.
【００１８】測定された圧力データをガス吸着量に換算
するためサンプルセル（６）の内容積と、ガス出口弁
（５）と真空ポンプ入口弁（８）で囲む部分の内容積及
び吸着ガス温度と定量ガス注入器（４）を制御し送り込
まれる注入ガス量を予め登録し演算部（１１）にて演算
処理を行い、適便、画面やプリンター、プロッター等に
出力を行う。In order to convert the measured pressure data into the gas adsorption amount, the internal volume of the sample cell (6), the internal volume of the portion surrounded by the gas outlet valve (5) and the vacuum pump inlet valve (8), and the temperature of the adsorbed gas. Then, the control unit controls the fixed-quantity gas injector (4) to register the amount of the injected gas to be sent in advance, performs an arithmetic process in the arithmetic unit (11), and outputs the information to a screen, a printer, a plotter, or the like as appropriate.
【００１９】[0019]
【発明の効果】以上詳述した本発明によれば、上記構成
としたことにより以下の効果を奏ずるAccording to the present invention described in detail above, the following effects can be obtained by adopting the above configuration.
【００２０】測定時、定量ガス注入器（４）を制御し送
り込まれるため吸着ガス注入の定量性の向上が成され
る。また注入される吸着ガスが微量のため分解能（測定
点数）の向上が成される。さらに測定毎に吸着平衡に到
達するまで保管するため測定精度の向上もなされるもの
である。At the time of measurement, the quantitative gas injector (4) is controlled and sent in, so that the quantitativeness of the adsorption gas injection is improved. Further, since the amount of the adsorbed gas injected is small, the resolution (the number of measurement points) is improved. In addition, the measurement accuracy is improved because the measurement is stored until the adsorption equilibrium is reached for each measurement.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施例を示す機器構成図である。FIG. 1 is a device configuration diagram showing an embodiment of the present invention.
【図２】従来技術の実施例を示す機器構成図である。FIG. 2 is a device configuration diagram showing an embodiment of the prior art.
【図３】従来技術の実施例の他例を示ず機器構成図であ
る。FIG. 3 is a device configuration diagram without showing another example of the embodiment of the prior art.
１ 吸着ガス容器 ２ 圧力調整器 ３ ガス入口弁 ４ 定量ガス注入器 ５ ガス出口弁 ６ サンプルセル ７ 圧力検出器 ８ 真空ポンプ入口弁 ９ 真空ポンプ １０ 制御部 １１ 演算部 １２ 出力部 １３ サンプル １４ 恒温容器 １５ ヒーター ２２ 圧力調整器 ２３ ガス入口弁 ２４ 圧力検出器１ ２５ サンプルセル入口弁 ２６ 圧力検出器２ ２７ サンプルセル ２８ 真空ポンプ入口弁 ２９ 真空ポンプ ３０ 制御部 ３１ 演算部 ３２ 出力部 ４２ 圧力調整器 ４３ ガス入口弁 ４４ 流量制御機 ４５ サンプルセル入口弁 ４６ 圧力検出器 ４７ サンプルセル ４８ 真空ポンプ入口弁 ４９ 真空ポンプ ５０ 制御部 ５１ 演算部 ５２ 出力部 DESCRIPTION OF SYMBOLS 1 Adsorption gas container 2 Pressure regulator 3 Gas inlet valve 4 Quantitative gas injector 5 Gas outlet valve 6 Sample cell 7 Pressure detector 8 Vacuum pump inlet valve 9 Vacuum pump 10 Control unit 11 Operation unit 12 Output unit 13 Sample 14 Constant temperature container DESCRIPTION OF SYMBOLS 15 Heater 22 Pressure regulator 23 Gas inlet valve 24 Pressure detector 1 25 Sample cell inlet valve 26 Pressure detector 2 27 Sample cell 28 Vacuum pump inlet valve 29 Vacuum pump 30 Control part 31 Calculation part 32 Output part 42 Pressure regulator 43 Gas inlet valve 44 Flow rate controller 45 Sample cell inlet valve 46 Pressure detector 47 Sample cell 48 Vacuum pump inlet valve 49 Vacuum pump 50 Control unit 51 Operation unit 52 Output unit
Claims (1)
ンプで構成され、制御部（１０）により駆動制御し定量
のガスを注入せしめる定量ガス注入器（４）にガス入口
弁（３）とガス出口弁（５）を設け、吸着ガスを一定圧
力に調整する圧力調整器（２）を前記ガス入口弁（３）
に設け、前記ガス出口弁（５）にサンプルセル（６）と
圧力検出器（７）と真空ポンプ入口弁（８）を設け、前
記真空ポンプ入口弁（８）に真空ポンプ（９）を設け、
前記各弁（３）（５）（８）と定量ガス注入器（４）を
制御する制御部（１０）と圧力信号を入力演算する演算
部（１１）と演算及び制御結果を出力する出力部（１
２）を具備することを特徴とする細孔分布測定装置。Claims: 1. A syringe or a cylinder or a metering port.
Drive control by the control unit (10)
A gas inlet valve (3) and a gas outlet valve (5) are provided in a fixed gas injector (4) for injecting the gas of (1), and a pressure regulator (2) for adjusting the adsorbed gas to a constant pressure is provided by the gas inlet valve (3). )
The gas outlet valve (5) is provided with a sample cell (6), a pressure detector (7), and a vacuum pump inlet valve (8), and the vacuum pump inlet valve (8) is provided with a vacuum pump (9). ,
A control unit (10) for controlling the valves (3), (5), (8) and the fixed-quantity gas injector (4); a calculation unit (11) for inputting and calculating a pressure signal; and an output unit for outputting calculation and control results (1
A pore distribution measuring device comprising: (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3082071A JP2779871B2 (en) | 1991-01-22 | 1991-01-22 | Pore distribution measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3082071A JP2779871B2 (en) | 1991-01-22 | 1991-01-22 | Pore distribution measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05180750A JPH05180750A (en) | 1993-07-23 |
| JP2779871B2 true JP2779871B2 (en) | 1998-07-23 |
Family
ID=13764254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3082071A Expired - Lifetime JP2779871B2 (en) | 1991-01-22 | 1991-01-22 | Pore distribution measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2779871B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2779913B2 (en) * | 1995-01-30 | 1998-07-23 | 稔 竹内 | Pore distribution measuring device and metering injector |
| JP2784476B2 (en) * | 1995-03-07 | 1998-08-06 | 稔 竹内 | Pore distribution measuring device |
| CN112082900B (en) * | 2020-09-16 | 2023-05-05 | 西南石油大学 | Testing device and method for improving gas injection accuracy of long core of low-permeability reservoir |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5965241A (en) * | 1982-10-06 | 1984-04-13 | Shokubai Kasei Kogyo Kk | Small pore-distribution analyzing apparatus |
| JPS61271439A (en) * | 1985-05-27 | 1986-12-01 | Fuji Debuison Kagaku Kk | Automatic measuring apparatus |
-
1991
- 1991-01-22 JP JP3082071A patent/JP2779871B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05180750A (en) | 1993-07-23 |
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