Abstract: A valve device includes: a casing including a valve chamber; a valve seat disposed in the valve chamber and including a valve hole; a float disposed in the valve chamber and movable in accordance with the amount of drain in the valve chamber to thereby open and close the valve hole; and a support supporting the float in the state of being seated on the valve seat and closing the valve hole. The support includes a base including an opening and having a frame shape, and two float seats disposed in the base, and the float in the state of being seated on the valve seat and closing the valve hole is seated on the two float seats.

Abstract: A valve device includes: a casing including a valve chamber; a valve seat disposed in the valve chamber and including a valve hole; a float disposed in the valve chamber and movable in accordance with the amount of drain in the valve chamber to thereby open and close the valve hole; and a support supporting the float in the state of being seated on the valve seat and closing the valve hole. The support includes a base including an opening and having a frame shape, and two float seats disposed in the base, and the float in the state of being seated on the valve seat and closing the valve hole is seated on the two float seats.

Abstract: A position detection sensor includes a rod-shaped contact part having a distal end and a proximal end, the contact part being configured such that an outer peripheral surface thereof at the distal end contacts an object and the contact part pivots about the proximal end in accordance with displacement of the object; a movable part configured to move with a pivot of the contact part; and a magnetic switch configured to sense a presence of the movable part and detect a position of the object when the movable part moves to approach a predetermined distance. The contact part is elastic and includes a columnar outer member constituting an outer peripheral portion of the contact part and a rod-shaped inner member inserted in the outer member and having an elastic modulus larger than that of the outer member.

Abstract: A fluidic device includes a casing in which a fluid passage is disposed and which has an outer surface including a detection target surface (bottom surface) that is to contact a detection part of a sensor so that at least one of a temperature and a vibration of the fluidic device is detected; and a plug detachably disposed on the casing and configured to cover the detection target surface (bottom surface).

Abstract: The discharge valve unit includes: a valve case configured to be detachably attached to the housing and including a second reservoir for liquid configured to communicate with the first reservoir when the valve case is attached to the housing; and a second valve mechanism disposed in the second reservoir and including a second discharge hole having a larger opening diameter than that of the first discharge hole and a second valve member accommodated in the second reservoir and configured to open and close the second discharge hole. The second valve mechanism includes a spring configured to bias the second valve member in a valve opening direction. When a pressure of the second reservoir increases to a predetermined value, the second valve member closes the second discharge hole against a biasing force of the spring.

Abstract: The discharge valve unit includes: a valve case configured to be detachably attached to the housing and including a second reservoir for liquid configured to communicate with the first reservoir when the valve case is attached to the housing; and a second valve mechanism disposed in the second reservoir and including a second discharge hole having a larger opening diameter than that of the first discharge hole and a second valve member accommodated in the second reservoir and configured to open and close the second discharge hole. The second valve mechanism includes a spring configured to bias the second valve member in a valve opening direction. When a pressure of the second reservoir increases to a predetermined value, the second valve member closes the second discharge hole against a biasing force of the spring.

Abstract: A state determination device for a liquid pumping apparatus includes: a casing that forms a reservoir space; a feed valve that introduces working gas into the reservoir space; an exhaust valve that releases the working gas from the reservoir space; and a valve operating mechanism having a float arranged in the reservoir space, and performing a pumping stroke in which the liquid is pumped from the reservoir space under a pressure of the working gas and an inflow stroke in which the liquid flows into the reservoir space and the working gas is released. The state determination device further includes a pressure sensor that detects a pressure of the reservoir space, and a determination unit that determines whether the liquid pumping apparatus is in an operating state of performing the pumping stroke or the inflow stroke based on the pressure detected by the pressure sensor.

Abstract: A fluid leakage data management apparatus includes an input unit to which data on fluid leak portions collected through a fluid leak diagnosis of a plant is input; a display unit on which the data input to the input unit is displayed; and a data processing unit that displays, on the display unit, a leak portion display image in which, with respect to positional data indicating positions, in the plant, of the respective fluid leak portions input to the input unit, indicators representing the respective fluid leak portions are displayed superimposed on a configuration diagram image of the plant at locations corresponding to the positional data of the respective fluid leak portions on the configuration diagram image.

Abstract: A maintenance support system for a plurality of maintenance-target apparatus in a plant includes a maintenance information delivery unit that delivers maintenance information Im that indicates an operational status of each maintenance-target apparatus to maintenance personnel every preset time T, wherein the maintenance information delivery unit delivers predictive information If to the maintenance personnel at a specified time Tf between the previous delivery of the maintenance information Im and the next delivery of the maintenance information Im, the predictive information If providing predictions regarding the operational status of each maintenance-target apparatus at the next delivery of the maintenance information Im.

Abstract: Suitability of an operational state of a steam-using equipment is accurately estimated to allow for early detection of a sign of abnormality in the steam-using equipment. A steam-using facility monitoring system (M) comprised of a steam-using equipment (4) includes a control state detector (D1) that detects a state of a steam controller (1) provided in a steam pipe (2) accompanying the steam-using equipment (4), and an operational state estimating means (S) having a signal input unit (S1) that inputs a detection signal (?i) from the control state detector (D1) and an operational state estimation unit (S2) that estimates the operational state of the steam-using equipment (4) based on one inputted detection signal (?i) or a preset particular combination of detection signals (?i).

Abstract: A flow rate adjusting valve includes: a casing including an inlet and an outlet and also including a channel connecting the inlet and the outlet to each other; a cylindrical valve port member disposed in the channel and having a valve port penetrating the valve port member in an upstream-downstream direction; and a valve body configured to move forward and backward to the valve port from a downstream side to thereby adjust an opening degree of a downstream opening of the valve port.

Abstract: Disclosed is a deterioration determination device for a liquid pumping apparatus including: a casing that forms a reservoir space for storing liquid flowed thereto; a feed valve that introduces working gas into the reservoir space; an exhaust valve that releases the working gas from the reservoir space; and a valve operating mechanism having a float arranged in the reservoir space, and performing a pumping stroke in which the liquid is pumped from the reservoir space under a pressure of the working gas by opening the feed valve and closing the exhaust valve when the float moves up to a predetermined high level, and an inflow stroke in which the liquid flows into the reservoir space and the working gas is released from the reservoir space by closing the feed valve and opening the exhaust valve when the float moves down to a predetermined low level.

Abstract: The discharge valve unit includes: a valve case configured to be detachably attached to the housing and including a second reservoir for liquid configured to communicate with the first reservoir when the valve case is attached to the housing; and a second valve mechanism disposed in the second reservoir and including a second discharge hole having a larger opening diameter than that of the first discharge hole and a second valve member accommodated in the second reservoir and configured to open and close the second discharge hole. The second valve mechanism includes a spring configured to bias the second valve member in a valve opening direction. When a pressure of the second reservoir increases to a predetermined value, the second valve member closes the second discharge hole against a biasing force of the spring.

Abstract: A sensor device includes: a rod member including an axially extending gas passage into which fluid flows; a sheath pipe thinner than the gas passage, inserted in the gas passage with a distal end thereof being located inside the gas passage, and configured to detect a temperature of the fluid; an insert configured to fix a proximal end of the sheath pipe; and retention members configured to retain the distal end of the sheath pipe.

Abstract: A silencer includes a main body provided with a flow path having inlet and outlet ports of steam, configured such that the outlet port is submerged in drain, and including a submerged portion configured such that the steam contacts, in the flow path, the present drain having flowed in through the outlet port, and a porous member covering the outlet port.

Abstract: A monitoring system that monitors a steam-using facility includes a temperature sensor that is a trap temperature sensor configured to detect a temperature of a steam trap provided in a steam discharge unit and/or a steam temperature sensor configured to detect a temperature of steam flowing into the steam trap and a pressure sensor configured to detect a pressure of steam flowing into the steam trap. The monitoring system determines that there is an occurrence of an abnormality or a sign of the abnormality in the steam trap when (i) a temperature detection value obtained by the temperature sensor and/or statistical temperature data obtained by performing statistical processing on the temperature detection value deviates from a predetermined criterion thereof and (ii) a pressure detection value obtained by the pressure sensor and/or statistical pressure data obtained by performing statistical processing on the pressure detection value deviates from a predetermined criterion thereof.

Abstract: A position detection sensor includes a rod-shaped contact part having a distal end and a proximal end, the contact part being configured such that an outer peripheral surface thereof at the distal end contacts an object and the contact part pivots about the proximal end in accordance with displacement of the object; a movable part configured to move with a pivot of the contact part; and a magnetic switch configured to sense a presence of the movable part and detect a position of the object when the movable part moves to approach a predetermined distance. The contact part is elastic and includes a columnar outer member constituting an outer peripheral portion of the contact part and a rod-shaped inner member inserted in the outer member and having an elastic modulus larger than that of the outer member.

Abstract: An ejector includes a nozzle, a suction chamber, and a diffuser. A diffuser further includes an attachment configured to change the dimensions of the outlet flow path. The attachment changes the length X of a narrowed flow path and the length Y and the inner diameter D of a parallel flow path such that expressions (1) and (2) are satisfied: X=A×D??(1), and Y=B×D??(2).

Abstract: A drain trap includes: a casing having a fluid channel; and a second valve mechanism including a second valve seat having a seat surface in a ring shape and a second valve body configured to be displaced to be separated from and seated on the seat surface of the second valve seat so that and the second valve mechanism opens and closes the channel. The second valve seat is held to be movable back and forth along a center axis of the ring shape such that the seat surface of the second valve seat and the seat surface of the second valve body are separated from each other and contact each other, and is held to be rotatable about the center axis of the ring shape.