JPS6337246A - Calorimeter - Google Patents

Abstract

PURPOSE:To enhance measuring accuracy, by providing a solenoid valve, which automatically weighs water to supply the same into an inner cylinder, in the water of an outer tank. CONSTITUTION:A pump 4 is provided to an inner cylinder 2 and water 7 is poured in an outer tank 1. Next, water having predetermined temp. is made by an outer tank water temp. regulator 20. At this time, when the temp. of water injected is lower than preset temp., a solenoid valve 13 automatically opens and heated water is injected in the tank 1 from a hot water tank 14 to obtain predetermined temp. Next, the outer tank water 7 regulated to the predetermined temp. is introduced into the inner cylinder 2 while being weighed by an inner cylinder water weighing device. When a prescribed quantity water is weighed to be taken in the inner cylinder 2, the specimen in the pump 4 is burnt and the heat of combustion is absorbed by the water of the inner cylinder 2. At this time, the temp. change of the water of the inner cylinder 2 is read by a detector 11 and the temp. difference with a detector 8 provided to the outer tank 1 is detected by the regulator 20, and the solenoid valve 13 is opened so that the temp. difference between the inner cylinder water and the outer tank water 7 becomes zero to inject heated water from the hot water tank 14. By this constitution, measuring accuracy can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a calorimeter for measuring the calorific value of solid and liquid substances, and in particular to a calorimeter that is capable of directly recording the rise in internal cylinder water temperature as the calorific value. The aim was to improve the measurement accuracy and simplify the structure.

In general, PJ for solid and liquid substances! The thermo-rat test that measures the amount of water is carried out by sealing a certain amount of sample into a pump along with compressed oxygen for complete combustion, immersing the pump in an inner cylinder containing a specified amount of water, and then adjusting the temperature of the water in the inner cylinder. Same as? The sample inside the pump is combusted by passing an electric current through the ignition wire of the pump in an outer tank filled with water at a temperature of 100 ℃, and the heat of combustion is absorbed into the inner cylinder water, and the calorific value is measured from the rise in the inner cylinder water temperature. This is how it was done. In this case, the outer tank is equipped with an outer tank water heating device, which increases the outer tank water temperature in accordance with the rise in the inner tank water temperature by 1, so that the temperature difference between the inner tank water and the outer tank water is substantially reduced. -L
The amount of heat generated by such a calorimeter is as follows: Expressed by the formula.

Calorific value (cal) - I internal cylinder water amount (g)] Apparatus water equivalent (
gN
If temperature fluctuation factors from sources other than the inner cylinder are added, the device water equivalent value will naturally change, and the amount of change in the device water equivalent will appear as a measurement error in the immediate heat amount value.

The equipment water equivalent here is defined as including all heat absorption factors including the internal cylinder water in the equipment system.

According to Patent Publication No. 41+Sho 59-344166, as a method for measuring a specified amount of water in the inner cylinder, water from the outer tank is measured by a solenoid valve and an accompanying inlet pipe and a liquid level relay. In this case, water from the outer tank to be injected into the inner cylinder is first guided to a solenoid valve located in the air layer outside the outer tank, and then again through the inlet pipe inside the outer tank. jm has a structure that goes into the inner cylinder. However, in this method, the electromagnetic valve and part of the introduction pipe connected from the tank to the inner cylinder are in a temperature environment outside the heat insulating structure, so there is no way to accurately measure the temperature -L rise of the inner cylinder water. Assuming that the temperature difference between the inner cylinder water and the outer tank water is actually 1-
Even if an adiabatic effect is achieved by avoiding the operation so that the temperature becomes zero, the water equivalent of the device will actually change due to the influence of parts such as solenoid valves that do not benefit from this effect. Especially if you want to improve measurement accuracy! It will become a star that cannot be shared. ! When performing measurements using this calorific value of 8I, it is difficult to finely adjust the room temperature within ±1~
The fixed setting in the 3°C range is Mukura, therefore the temperature -1
If the heat Fit 1jll+constant is used to measure a portion of the heat, it will cause an error.

In the present invention, these drawbacks of conventional calorimeters have been overcome, and the electric valve and introduction pipe for introducing water from the outer tank to the inner cylinder-1 are adjusted to the temperature of the water in the inner cylinder. By installing the device in an outer tank water that is constantly regulated to within 5/100 degrees Celsius, eliminating influences from the surrounding environment other than the insulating structure and suppressing fluctuations in the water equivalent of the device, measurement accuracy is reduced. Therefore, it is possible to obtain a calorimeter which is easy to operate and has a significantly simplified structure.

That is, according to the present invention, in a calorimeter that is capable of directly recording an increase in the inner cylinder water temperature as a calorific value, a heavy duty valve for automatically weighing water into the inner cylinder is provided in the outer tank water. The installed heat capacity side is provided.

Next, the present invention will be explained with reference to the drawings.

In FIG. 1, 1 is an outer tank, and outer tank water 7 is placed in this. Also, stir f-'l in the outer tank! There is a detector 8 that detects the temperature of the H6 and the outer tank water 7. Inside the outer tank 1, there is an intermediate tank 3 having an air layer 9, and further inside the intermediate tank 3, an inner cylinder 2 is provided.

The inner cylinder 2 has a pump 4 and a stirrer 5 for burning the sample, and the inner cylinder 2t is filled with water during measurement. Therefore, the inner tube 2 is provided with an electric contact 10 as a part of the inner tube water scale M device for weighing water, and a liquid level relay 16 is connected to the tip of the contact point 10, and further to the output side of the electric contact 10. A solenoid valve 15 for injecting water into the inner cylinder 2 is fixed to the intermediate tank 3 and connected to the inner cylinder 2 through an introduction pipe 19.

In addition, the inner tube 2 is provided with a detection device 1iii11 for detecting an increase in the temperature of the inner tube water and a temperature detector 11'' for adjusting the temperature of the outer tank water 7 to the same temperature as the inner tube water temperature. 12 is a lid of the intermediate tank 3.

The inner tube water temperature detector 11 is connected to a recorder 18 via a calorimeter 17. Further, the detector 11° provided in the inner cylinder 2 is connected to the outer tank water temperature adjusting device 20 together with the detector 8 provided in the outer tank 1, and is connected to the solenoid valve 13 as its output side.

14 is a 7-pot container filled with heated water.

The heat pump 1 of the present invention has the above-mentioned configuration, but in order to operate this heat quantity d1, after installing the pump 4 in the inner cylinder 2,
Add water 7 to the garlic tank I. Next, water at a predetermined temperature is produced by the outer tank water temperature control device 20. At this time, if the temperature of the injected water is lower than the preset temperature, the solenoid valve 13 will automatically open and the heated water will be heated. Water is injected from the hot water tank 14 to create a predetermined temperature.

Next, the outer tank water 7, which has been adjusted to a predetermined temperature, enters the internal water weighing device and is introduced into the inner cylinder 2 and weighed. 7 is injected and when the water surface reaches the electrical contact 10, a signal is sent to the liquid level relay 16 and the solenoid valve 15 is closed. When a specified amount of water is weighed in the inner cylinder 2, the test tube 1 in the pump 4 is burned and a part of the heat is absorbed into the inner cylinder water. At that time, the temperature of the water in the inner tank rises as the heat increases, but in order to prevent that heat from escaping, the temperature change in the inner tank is read by a detector 1, and the outer tank water temperature is adjusted. 20 detects the temperature difference between the temperature difference between the temperature difference between the two inner cylinder water and the outer tank water, and the solenoid valve 13 is opened to heat the water from the hot water tank 14 so that the temperature difference between the two inner cylinder water and the outer tank water becomes zero. Inject water. The measurement of the inner cylinder water temperature ends when the sample finishes burning and no more heat is released from the pump 4. At that time, the temperature -L: 4 minutes is measured by the detector 1.
1, it is sent to the heat l measuring device 17, converted into a calorific value, and recorded by the recorder 18. The measurement operation ends here, but in preparation for the next measurement, the water in the inner cylinder 2 is discharged into the outer tank 1 by opening the electromagnetic valve 15.

In the present invention, the inner cylinder water type W' device means the electrical contact 10
and the liquid level relay 16, and the power connected to it ((i valve 15)
A device consisting of FIG. 2 shows details of the solenoid valve 15, which is a part of the device.

2 is the side wall of the inner cylinder, and 3 is the side wall of the intermediate tank. 15
is a solenoid valve which is connected to a waterproof cover 21 and an introduction pipe 19, and the introduction pipe 19 is connected to the outer tank and the inner cylinder via the electromagnetic valve 15.

Next, the structure and function of the device according to the present invention will be explained in detail.

As mentioned in Chapter 2, the rl l of a series of measurement operations.
At this point, this inner cylinder water scale device also operates, but to explain this part again step by step, the solenoid valve 15 is opened when the temperature of the outer tank water is adjusted.
The water inside is injected into the inner cylinder 2 using the head difference. Inner cylinder 2
When the water surface reaches the electric contact 10 provided at the liquid level, a signal is sent to the liquid level electric device 16, the solenoid valve 15 is closed, and the operation of weighing the water in the inner cylinder is completed. When the measurement is completed and the water in the inner tank is to be discharged, the solenoid valve 15 is opened, and at the same time, the water in the tank 1 is also discharged and then into the outer tank l.

With this structure, unlike conventional calorimeters, separate solenoid valves are not used for water supply and drainage of the inner cylinder (also,
The solenoid valve 15 is directly fixed only to the intermediate tank 3, and the introduction pipe etc. are not fixed to the outer tank and can be moved in the outer tank together with the intermediate tank 3, so that the structure and operation can be simplified.

On the other hand, in terms of the effect on measurement accuracy (1), since the calorific value (1) is obtained from the formula based on the above principle, the solenoid valve connected to the inner cylinder is If the device is installed in an air layer with an adiabatic ring, the water equivalent of the device will change and the calculated calorific value will include an error. However, in the calorimeter according to the present invention, since the electromagnetic valve is installed in an insulating structure in the well-regulated outer tank water, the correct value is recorded without causing any change in the device water equivalent.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the apparatus system of the present invention, and FIG. 2 is a perspective view of one row of the apparatus in the inner cylinder water introduction section. 1... Outer tank 2... Inner cylinder 3... Intermediate tank 4... Pump 5.6... Stirrer 8.11.1 Bi... Detector 13.15... Solenoid valve 14 ... Hot water tank 16 ... Liquid level relay 17 ... Calorie measuring device 18 ... Recorder 20 ... Outer tank water temperature adjustment device

Claims (1)

[Claims] (1) In a pump-type calorimeter that adiabatically burns a sample and measures its calorific value, a pipe introduces water in an outer tank that has been adjusted to a predetermined temperature from the outer tank to the inner cylinder that houses the pump. In a calorimeter that automatically supplies water via a solenoid valve and directly records the rise in inner cylinder water temperature as calorific value, the solenoid valve for automatically introducing water into the inner cylinder is removed. A calorimeter characterized by being installed in tank water.