Abstract: A raw material gas liquefying device includes a feed line which feeds a raw material gas, a refrigerant circulation line which circulates a refrigerant, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit, a heat exchanger which exchanges heat between the raw material gas and the refrigerant, a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen, and a controller which manipulates the opening rate of the expansion unit entrance value and performs a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, at start-up and stop of the expansion unit.

Abstract: A raw material gas liquefying device includes a feed line; a refrigerant circulation line; and a controller. In a refrigerant liquefaction route, a refrigerant flows through a compressor, a heat exchanger, a circulation system JT valve, a liquefied refrigerant storage tank, and the heat exchanger, and returns to the compressor. In a cryogenic energy generation route, the refrigerant flows through the compressor, the heat exchanger, an expansion unit, and the heat exchanger, and returns to the compressor. The controller determines if a refrigerant storage tank liquid level is within an allowable range, manipulates a feed system JT valve opening rate to control refrigerant temperature at the high-temperature-side refrigerant flow path exit side of the heat exchanger, and manipulates the opening rate of the feed system JT valve to control the refrigerant storage tank liquid level so that the refrigerant storage tank liquid level falls into the predetermined allowable range.

Abstract: A raw material gas liquefying device includes a feed line which feeds a raw material gas, a refrigerant circulation line which circulates a refrigerant, the refrigerant circulation line including an expansion unit of a turbine type which expands the refrigerant to generate cryogenic energy, and an expansion unit entrance valve provided at an entrance side of the expansion unit, a heat exchanger which exchanges heat between the raw material gas and the refrigerant, a cooler which performs initial cooling of the raw material gas and the refrigerant by heat exchange with liquid nitrogen, and a controller which manipulates the opening rate of the expansion unit entrance value and performs a feedback control so that the rotation speed of the expansion unit reaches a predetermined target value, and outputs the opening rate command to the expansion unit entrance valve, at start-up and stop of the expansion unit.

Abstract: A raw material gas liquefying device includes a feed line; a refrigerant circulation line; and a controller. In a refrigerant liquefaction route, a refrigerant flows through a compressor, a heat exchanger, a circulation system JT valve, a liquefied refrigerant storage tank, and the heat exchanger, and returns to the compressor. In a cryogenic energy generation route, the refrigerant flows through the compressor, the heat exchanger, an expansion unit, and the heat exchanger, and returns to the compressor. The controller determines if a refrigerant storage tank liquid level is within an allowable range, manipulates a feed system JT valve opening rate to control refrigerant temperature at the high-temperature-side refrigerant flow path exit side of the heat exchanger, and manipulates the opening rate of the feed system JT valve to control the refrigerant storage tank liquid level so that the refrigerant storage tank liquid level falls into the predetermined allowable range.

Abstract: An automatic inspecting apparatus has a function for generating a discharge signal for discharging a defective object at a predetermined position. The automatic inspecting apparatus comprises an imaging device for imaging a moving object, a sensor for detecting the arrival of the object, an image processing unit for processing images produced by the imaging device to detect defective objects, and a discharge signal generating unit for discharging defective objects at a predetermined position. An ID number is assigned to each image produced by the imaging device, and pulses generated by an encoder start to be counted when each ID number is assigned. If the object is determined to be defective after image processing by the image processing unit, the discharge signal generating unit generates a discharge signal when the number of pulses counted for the corresponding ID number reaches a pulse number equivalent to the distance between the sensor position and the discharge position.

Abstract: The present invention relates to a method for detecting a defect in a barrel portion of a bottle. The defect in the barrel portion of the bottle includes a thin blister and a longitudinal streak. The defect in the bottle barrel is detected by imaging the bottle barrel with a CCD camera based on light which has passed through a light shield plate having a plurality of oblique slits and the bottle barrel, and processing the image of the bottle barrel generated by the CCD camera to determine whether or not the defect is present.

Abstract: A container inspection apparatus inspects sealing performance of a closure of a container such as a bottle filled with effervescent beverage. The apparatus include a plurality of support members for placing a container thereon and movable along a certain path, a plurality of ultrasonic transducers fixed to one of the support members for generating ultrasonic vibration, and a supply device for supplying liquid to an upper surface of the support member. The ultrasonic vibration of the support member caused by the ultrasonic transducer is transmitted to a bottom of the container through liquid interposed between the bottom of the container and the upper surface of the support member. After vibrating the bottom of the container, beverage in the container is imaged by an imaging unit to detect a defective container which is not sealed properly.