JP2004028856A - Device for measuring and testing load - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To measure a load in real time while a sample s is set under an atmosphere different from that in a load measuring instrument 1 side. <P>SOLUTION: This load measuring and testing device has a container 4 for forming a space in its inside, a load measuring instrument 1 for measuring the load under the condition where the sample s is suspended vertically in the space formed inside the container 4, a load transmission mechanism 2 interposed between the container 4 and the load measuring instrument 1 to block atmospheres in the space formed in the container 4 and a space in a load measuring instrument 1 side, and to transmit a vertical-directional load applied onto the sample s to the load measuring instrument 1, and a means for bringing the inside of the space formed in the container 4 into an atmosphere different from that in its periphery. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for measuring the load of a sample in an atmosphere different from the surroundings, such as high temperature and high humidity, for the purpose of grasping the state of the sample such as oxidation of the sample by a change in the load of the sample. More specifically, the load measuring device can measure the change in the load of the sample in real time while completely shutting off the atmosphere between the space where the load measuring device is placed and the space where the sample is placed. Related to test equipment.
[0002]
[Prior art]
For example, as a method of measuring how a material is corroded in a bad environment different from a general atmosphere such as high-temperature and high-humidity or a corrosive gas atmosphere under high temperature, a sample is placed in such an environment. At a predetermined time, the amount of oxygen combined with the sample material is grasped by a change in the load before and after that time. In this case, the load of the sample is measured by a load measuring device such as an electronic balance.
[0003]
A load measuring device such as an electronic balance is a precision instrument, and the measurement accuracy is extremely sensitive to temperature and humidity. Therefore, the weight of the sample cannot be measured by placing the load measuring device in a special atmosphere such as a high-temperature and high-humidity environment where the sample is placed or a corrosive gas atmosphere at a high temperature. Therefore, conventionally, after placing a sample in a closed container in a corrosive gas atmosphere at high temperature and high humidity or high temperature for a predetermined time, the sample is taken out of the closed container, and the load is measured with a load measuring device outside the test environment. Was measured to determine the change in load before and after that.
[0004]
[Problems to be solved by the invention]
However, in such a conventional measurement method, for example, when examining the relationship between time and the amount of oxygen combined with a sample material, many samples are used, and samples are taken out of a closed container at different times, and each sample is taken individually. It is necessary to measure the load. Even if the individual samples are the same material, each sample is a different sample.Therefore, there is a risk that a measurement error may occur. Measures will also be necessary. Therefore, there is a problem that a large number of samples are required and the size of the sealed container is increased. Further, since the load of the sample cannot be measured in real time, it is difficult to perform a test in accordance with actual use conditions. Further, since data during each measurement time cannot be obtained, the data during the measurement is assumed by a certain function. There is also a problem in measurement accuracy such as the necessity.
[0005]
The present invention has been made in view of the problems of the conventional load measuring and testing means, and has a sample placed in a special atmosphere different from the environment to be tested, while the load measuring instrument is placed in an atmosphere that does not affect the measurement accuracy. The purpose of the present invention is to provide a load measurement test device that can measure the load of a sample in real time, thereby easily performing tests and measurements in a state according to the realistic use conditions of the sample material. I do.
[0006]
[Means for Solving the Problems]
In the present invention, in order to achieve the above object, in the upper and lower two spaces, the atmosphere thereof is shut off, but the load transmission mechanism 2 that can transmit only the load of the vertically suspended sample s upward, is used. The sample s is placed in a space of a special atmosphere while the sample s is suspended vertically from the load measuring device 1 via the load transmitting mechanism 2, while the load measuring device 1 does not affect the measurement accuracy. The load of the sample s is measured while being placed in another atmosphere.
[0007]
That is, the load measurement test apparatus according to the present invention measures the load of a container 4 for forming a space therein and the sample s suspended vertically in the space formed in the container 4. Between the load measuring device 1 and the container 4 and between the load measuring device 1, the atmosphere between the space formed in the container 4 and the space on the load measuring device 1 side is cut off, and the vertical direction applied to the sample s is measured. It has a load transmitting mechanism 2 for transmitting a load to a load measuring device 1 and means for setting the inside of a space formed in the container 4 to an atmosphere different from the surroundings.
[0008]
In such a load measuring and testing apparatus according to the present invention, the load transmitting mechanism 2 places the sample s in a space having an atmosphere different from the surroundings, and the load measuring device 1 is placed in an atmosphere that does not affect the measurement accuracy. , The load of the sample s can be measured in real time. Thus, the load of the sample s that changes with time can be measured for one sample s without affecting the load measuring device 1 with the temperature, humidity, and other gas atmospheres.
[0009]
In such a load measuring test apparatus, as one of means for setting the inside of the space formed in the container 4 to an atmosphere different from the surroundings, an atmosphere gas is blown vertically from just below the sample s toward the sample s. Atmospheric gas delivery device 5 can be given. As described above, when the atmospheric gas is blown up from just below the sample s toward the sample s, the buoyancy of the atmospheric gas applied to the sample s can be measured by the load measuring device 1. It is also possible to grasp the state of the flow of the atmosphere gas in the chamber 4 and the like.
[0010]
Further, as one of means for setting the inside of the space formed in the container 4 to an atmosphere different from the surroundings, the heater 3 for heating the sample s in the container 4 can be cited. The heater 3 heats the sample s to a desired temperature, and the effect of the temperature on the sample s can be simulated together with the influence of the above-mentioned atmosphere gas.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described specifically and in detail with reference to the drawings.
FIG. 1 is a schematic vertical sectional side view showing an embodiment of a load measurement test device according to the present invention.
[0012]
As shown in FIG. 1, the load measurement test apparatus has a cylindrical container 4 made of stainless steel or the like, a container upper lid 9 and a container lower lid 21, and has a space in which a peripheral surface, a top surface, and a bottom surface are closed. ing. The container 4, the container upper cover 9 and the container lower cover 21 are all hollow, and a cooling solution for cooling the container 4, the container upper cover 9 and the container lower cover 21 by passing a cooling liquid such as water through a gap therein. The structure is taken. The container upper lid 9 is not completely fixed to the container 4 and discharges the air therein as the pressure inside the container 4 rises, thereby preventing a sudden increase in the pressure inside the container 4. Further, gas inlet / outlet ports 18 and 19 are provided at a lower portion and an upper portion of the container 4, respectively.
[0013]
A cylindrical furnace core tube 10 made of ceramic such as alumina is disposed on the central axis of the cylindrical container 4, and the upper end thereof is closed by a heater lid 11. The heater lid 11 is not completely fixed to the furnace core tube 10, and discharges the air therein as the pressure inside the furnace core tube 10 increases, thereby suppressing a sudden increase in the pressure inside the furnace core tube 10. To prevent. Around the furnace core tube 10, a heater 3 using a sheath heater or the like is installed. A cylindrical conduit 15 protrudes downward from the lower end of the furnace core tube 10.
[0014]
The atmosphere gas delivery device 5 is provided directly below the furnace core tube 10. The illustrated atmospheric gas delivery device 5 is for sending steam from below the furnace core tube 10 into the furnace tube 10. A water tank 13 made of stainless steel or the like having a chimney-shaped flow pipe 14 is provided with a pump P and the like. A water supply pipe 8 for sending water through, an atomizer 7 having an ultrasonic vibrator for ultrasonically vibrating water in a water tank 13 to atomize the water, and the mist in the water tank 13 from the flow pipe 14 to the water supply pipe 8. And a fan 6 to be sent upward. The inflow pipe 14 is provided on an extension below the central axis of the furnace core tube 10 so that the central axis coincides therewith. Further, the fan 6 is attached to the upper portion of the water tank 13 above the water surface in order to send out the mist on the water surface of the water tank 13. On the other hand, the water pipe 8 is connected to the bottom surface of the water tank 13 so as not to disturb the water surface of the water in the water tank 13.
[0015]
As described above, when the water in the water tank 13 is ultrasonically vibrated by the atomizer 7 to atomize the water, fog is generated in the water tank 13. When the fan 6 rotates and drives to introduce air from the outside onto the surface of the water in the water tank 13, the air is pushed and the mist is sent out from the feed pipe 14, and flows into the furnace core pipe 10 as a rising airflow. Then, the mist is vaporized in the furnace core tube 10.
A drain pan 16 as a water receiver is provided below the container 4 and the atmospheric gas transmitter 5 therein.
[0016]
On the other hand, on the container lid 9 of the container 4, there is a measuring device support portion 20, on which the load measuring device 1 such as an electronic balance is installed, and is suspended therefrom. A sample s to be subjected to a corrosion test or the like is suspended at the center of the furnace core tube 10. That is, a rod-shaped or wire-shaped load transmitting body 12 connected to the load measuring device 1 is introduced into the furnace core tube 10 through a hole or a gap at the center between the container lid 9 and the heater lid 11. A sample s is suspended from the lower end of the body 12. The load of the sample s is transmitted to the load measuring device 1 via the load transmitting body 12, and the load of the sample s can be measured.
[0017]
Further, a load transmitting mechanism 2 is provided between the load measuring device 1 and the container lid 9, and the load transmitting body 12 transmits the load of the sample s to the load measuring device 1 through the load transmitting mechanism 2. I do. The load transmitting mechanism 2 transmits the load of the sample s to the load measuring device 1 via the load transmitting body 12, and separates the space in the container 4 and the space in which the load measuring device 1 is disposed above from the atmosphere. And has a function of preventing the atmosphere in the container 4 from reaching the space in which the load measuring device 1 is disposed.
[0018]
As long as it has such a function, any load transmission mechanism 2 can be used, but the most suitable one is disclosed in Japanese Patent Application Laid-Open No. 2000-241260. This load transmitting mechanism 2 is as shown in FIG.
The configuration of the load transmitting mechanism 2 will be briefly described with reference to FIG. 2. On a horizontal support 17 which also has a function of blocking the atmosphere of the lower container 4, a magnetic material having a ring-shaped space inside is provided on a horizontal support 17. Is fixed, and a through hole at the center thereof is above the hole 24 of the support base 17 and its central axis coincides therewith. A permanent magnet 27 is fitted in the ring-shaped space of the magnetic force generating member 25, and a permanent magnet 27 is provided on the inner peripheral side of the space so that the permanent magnet 27 is not exposed from the inner peripheral surface of the magnetic force generating member 25. A magnetic sealing member 28 is fitted. The load transmitting body 12 vertically passes through the through hole of the magnetic force generating member 25. Further, the inside of the through hole of the magnetic force generating member 25 is filled with a magnetic fluid 29, and the magnetic fluid 29 is generated by the magnetic action of magnetic flux passing through a magnetic circuit formed by the permanent magnet 27 and the magnetic force generating member 25 of a magnetic material. , Are attracted and held in the space of the magnetic force generating member 25.
[0019]
The upper end of the load transmitting body 12 vertically penetrating the magnetic fluid 29 filled in the through hole of the magnetic force generating member 25 is connected to the load measuring device 1 having a roberval mechanism. A sample s is suspended from the lower end of the load measuring device 1, and the sample s is disposed on the center axis of the furnace core tube 10.
[0020]
As described above, the hole 24 of the support 17 is sealed by the magnetic fluid 29, and the atmosphere in the space above and below the support 17 is blocked by the support 17. On the other hand, the load of the sample s transmitted through the load transmitting body 12 is transmitted to the load measuring device 1 to which the upper end of the load transmitting body 12 is connected, and the load of the sample s is measured.
[0021]
In practice, the measurement accuracy when the sample s is suspended by the load transmitting body 12 and the load is measured is affected by the surface tension of the magnetic fluid 29 on the load transmitting body 12. However, if the conditions for holding the magnetic fluid 29 are set such that the surface tension of the magnetic fluid 29 is sufficiently smaller than the resolution of the measurement load of the sample s, necessary accuracy can be ensured.
[0022]
In the load measuring test apparatus having such a configuration, while heating the sample s to an appropriate temperature by the heater 3, the atmosphere gas delivery device 5 immediately below the sample s directs the sample s from below toward the sample s. Atmosphere gas such as water vapor is blown up in the direction. In this state, the load of the sample s is measured by the load measuring device 1 to check the oxidation state and the like. At this time, the amount of the atmospheric gas generated in the container 4 is grasped by, for example, the amount of water sent from the pump P to the water tank 13 through the water pipe 8.
[0023]
The water vapor rises in the furnace core tube 10, passes through a portion of the sample s, and is guided by the container lid 9 and flows toward the inner peripheral wall of the container 4. Since the container 4 is cooled by a cooling liquid such as cooling water passed through a space inside the container 4, water vapor is condensed. This water flows down the inner peripheral wall side of the container 4 and reaches the container lower cover 21, gathers at the center along the gradient of the upper surface of the container lower cover 21, and collects in the drain pan 16 from the central drain outlet. Can be
[0024]
In the load measuring test device having such a configuration, the sample s is placed in a space of an atmosphere different from the surroundings by using the load transmitting mechanism 2 as described above, and the load measuring device 1 has an influence on the measurement. The load of the sample s can be measured in real time while being placed in an atmosphere that is not given. By blowing up the atmosphere gas vertically from below toward the sample s by the atmosphere gas delivery device 5 just below the sample s, it is possible to measure even the buoyancy that the atmosphere gas gives to the sample s with the load measuring device 1, The load measuring device 1 can also grasp the state such as the flow of the atmosphere gas in the container 4.
Also, the depressurizing action of the vessel upper lid 9 in the vessel 4 and the depressurizing action of the heater lid 11 in the furnace core tube 10 prevent a rapid increase in the pressure between the vessel 4 and the furnace core tube 10 and reduce the equipment load. Safety can be ensured.
[0025]
In addition, in the load measuring test device shown in FIG. 1, gas inlet / outlet ports 18 and 19 are provided in the lower part and the upper part of the container 4, respectively. This is because, for example, when a gas other than water vapor, for example, an inert gas such as nitrogen or argon is introduced into the container 4, or when an atmosphere having an oxygen concentration higher than that in the atmosphere is used, the gas is transferred to the container 4. 4 and exhausted. Normally, gas is introduced from a gas inlet / outlet 18 below the container 4 and gas is exhausted from a gas inlet / outlet 19 above the container 4.
[0026]
【The invention's effect】
As described above, in the load measuring test device according to the present invention, the load measuring device 1 can measure the load of the sample s in real time while being placed in an atmosphere that does not affect the measurement. Tests and simulations based on actual use conditions can be easily performed.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional side view showing an embodiment of a load measurement test device according to the present invention.
FIG. 2 is a schematic vertical sectional side view showing a configuration of a load transmitting mechanism used in the embodiment of the load measuring test device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Load measuring device 2 Load transmission mechanism 3 Heater 4 Container 5 Atmospheric gas sending device s Sample

Claims (3)

A load measuring test device for measuring a change in load of a sample (s) placed in an atmosphere different from the surroundings, the container (4) for forming a space therein, and the container (4) formed in the container (4). The container (4) is located between the container (4) and the load measuring device (1) for measuring the load while vertically suspending the sample (s) in the space provided. A load transmitting mechanism (2) that shuts off the atmosphere between the space formed therein and the space on the side of the load measuring device (1) and transmits the vertical load applied to the sample (s) to the load measuring device (1). ), And means for setting the inside of the space formed in the container (4) to an atmosphere different from the surroundings thereof. One of the means for making the inside of the space formed in the container (4) an atmosphere different from the surroundings is an atmosphere gas transmitter that blows the atmosphere gas vertically from just below the sample (s) toward the sample (s). The load measurement test device according to claim 1, wherein (5). One of the means for making the space formed in the container (4) an atmosphere different from the surroundings is a heater (3) for heating the sample (s) in the container (4). The load measurement test device according to claim 1.

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