JP2909274B2 - Coal calorific value measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically measuring the calorific value of coals.

[0002]

2. Description of the Related Art For example, when coal is used as fuel in a thermal power plant or the like, it is necessary to accurately measure the calorific value. For this reason, JIS M 8814 specifies a method for measuring the calorific value of coals. According to the method specified in this JIS, coal powder as a sample is sealed together with high-pressure oxygen in a pressure vessel called a bomb, immersed in a double water tank, and the sample is completely encased inside the bomb by applying electricity. It is a method of burning and measuring the rise in water temperature at that time using a Beckman thermometer.

However, according to the JIS regulations, coal powder as a sample is wrapped in goose paper and then wrapped with a nickel wire ignition wire having a diameter of 0.1 mm and stored in a bomb. Automatic measurement of the calorific value could not be performed because the ignition wire had to be replaced every time because the ignition wire was burned out every time one measurement was performed.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems and measures the calorific value of coal automatically and with the same accuracy as that measured by the method specified in JIS. The present invention has been completed to provide a calorific value measuring apparatus for coals.

[0005]

The object of the present invention is to provide a support for supporting an analytical container containing coal as a sample on the lower surface of a lid of a bomb, a semi-permanent heater for igniting the sample, and the like. And a calorific value measuring device for coals, characterized in that the bomb main body side is provided with a push-up member that raises the analysis container to a position where it comes into contact with the heater when the lid is closed. . Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments.

[0006]

FIG. 1 is a sectional view for explaining a first embodiment of the present invention. Reference numeral 1 denotes a pressure-resistant bomb main body, and 2 denotes an O-ring 3 for sealing the opening of the bomb main body 1. Lid, 4
Is an outer lid. Reference numeral 5 denotes a support bar attached to the cover 2 and extending downward, and a support base 6 for receiving a ceramic or metal analysis container 7 is formed at the lower end thereof. The support base 6 of the embodiment is formed by forming a U-shaped member in two upper and lower stages, and can support the analysis container 7 by dropping it from above.

[0007] A semi-permanent heater 8 for igniting the sample is provided on the lower surface of the lid 2. The heater 8 of the embodiment is a ceramic heater, in which a heating element is sealed in a ceramic material that does not deteriorate even when heated in oxygen. Such a heater 8 can be used semi-permanently without deterioration of the internal heating element.

On the other hand, a push-up member 9 is provided on a side surface of the bomb main body 1 to raise the analysis container 7 to a position where it comes into contact with the heater 8 when the lid 2 is closed. The push-up member 9 of the embodiment is a flat plate (or a rod) protruding from the side surface of the bomb body 1, and enters the gap of the support base 6 made of a U-shaped member when the cover 2 is put on the bomb body 1.
The analysis container 7 is heated in contact with the bottom surface of the analysis container 7.
Can be raised to a position where it comes into contact with.

FIG. 2 is a sectional view for explaining a second embodiment of the present invention. As a semi-permanent heater 8, such as a nichrome wire or a Kanthal wire which does not easily deteriorate even when heated in oxygen. A heater made of a suitable metal or the like is used. The heater 8 is attached between the support rod 5 having a function as an electrode penetrating the lid 2 and the electrode 10. In the second embodiment, the push-up member 9 projects upward from the bottom surface of the bomb body 1.
The push-up member 9 also comes into contact with the bottom surface of the analysis container 7 from the gap at the center of the support base 6 when the cover 2 is put on the bomb body 1, and can raise the analysis container 7 to a position where it comes into contact with the heater 8. It is a structure that can be done.

[0010]

In order to measure the calorific value of coal using the apparatus of the present invention, the lid 2 is separated from the bomb body 1 and the analysis container 7 in which a sample is stored in advance. Is supported on a support base 6 at the lower end of the support rod 5 by a robot or the like. At this time, the analysis container 7 is dropped into the lower portion of the support base 6 and is supported. Next, when the lid 2 was attached to the bomb body 1, the push-up member 9 provided on the bomb body 1 pushed up the analysis container 7 toward the upper part of the support 6, and was stored inside the analysis container 7. The sample comes into contact with a semi-permanent heater 8 provided on the lower surface of the lid 2. Further, the lid 2 is firmly fixed to the bomb main body 1 by twisting the outer lid 4, and then the entire bomb is immersed in a double inner and outer water tank by a moving mechanism (not shown).

Thereafter, high-pressure oxygen is supplied to the inside of the bomb, and when a semi-permanent heater 8 is energized, the powder of coals as a sample in the analysis container 7 in contact therewith also burns. The rise in water temperature is measured with a high-precision thermometer based on the JIS regulations to determine the calorific value. After the measurement is completed, the entire bomb is pulled out of the water tank, and the lid 2 is attached to the bomb body 1.
When the analysis container 7 is removed by separating from the above, the measurement can be repeated by the same steps as described above. At this time, the analysis container 7 is provided with the push-up member 9 on the side of the bomb body 1.
And has fallen into the lower part of the support base 6 again, so that automatic removal by the robot can be easily performed.

[0012]

As described above, according to the present invention, the analysis container containing the sample is pushed up toward the heater by the push-up member provided on the bomb body side. The analysis container can be easily set on the support base by a robot or the like, and the sample can be reliably ignited by the heater when the lid is attached to the bomb body. In addition, since a semi-permanent heater is used in the present invention, it is not necessary to replace the ignition wire every time measurement is performed as in the related art. Therefore, it is possible to eliminate the necessity of wrapping the sample and winding the ignition wire with the goose paper as in the related art, and it is possible to eliminate the greatest difficulty in automating the measurement.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bomb main body 2 Lid 7 Analysis container 8 Heater 9 Thrust member

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Ishio Uemura 3-3-22 Nakanoshima, Kita-ku, Osaka-shi, Osaka Inside Kansai Electric Power Co., Inc. (72) Inventor Shoji Seiji 2-chome, Midori-ku, Nagoya-shi, Aichi Prefecture 167-1 (72) Inventor Norihiko Ishida 2-611, Asaide, Midori-ku, Nagoya City, Aichi Prefecture 72-1-1 (72) Inventor Takanori Soda 347-8, Yasukucho, Okazaki City, Aichi Prefecture -30872 (JP, A) JP-A-57-156547 (JP, A) JP-A-49-117098 (JP, A) Japanese Utility Model Laid-Open No. 59-45558 (JP, U) (58) Fields investigated (Int. . ⁶ , DB name) G01K 17/00

Claims (1)

(57) [Claims] 1. A support (6) for supporting an analytical container (7) containing coal as a sample on a lower surface of a lid (2) of a bomb;
A semi-permanent heater (8) for igniting the sample is provided, and the analytical container (7) is brought into contact with the heater (8) when the lid (2) is closed on the bomb body (1) side. An apparatus for measuring the calorific value of coals, comprising a push-up member (9) for ascending to a position.