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: The present invention includes a threshold value calculation unit that calculates a normal range that is a range of values that are taken when a steam trap is in a normal state, by using a predetermined calculation reference, based at least on state values with normal determination results, from among state values that have been stored in the storage unit during a predetermined period. A determination unit can perform predictive determination to determine whether the steam trap is in a normal state or a state that indicates an inclination toward a bad state and is highly likely to change to a bad state, by determining whether or not the state values are in the normal range, and the threshold value calculation unit performs accuracy determination to determine the accuracy of the predictive determination based on the results of the predictive determination regarding the state values stored in the storage unit, and adjusts the calculation reference based on the result of accuracy determination.

Abstract: A sensor connection structure is disposed in a manifold including a main pipe, a plurality of branch pipes connected to each of left and right of the main pipe, and a plurality of steam traps (valves) disposed in the branch pipes. The sensor connection structure includes: a plurality of sensors respectively disposed on the steam traps; a plurality of connection boxes arranged along an axis of the main pipe, connected to each other in series through electric wire pipes, and connected to the plurality of sensors through electric wire pipes; and a terminal unit connected to one of the plurality of connection boxes through an electric wire pipe.

Abstract: An equipment management system including a management device configured to manage operation states of at least some components forming a facility includes a plurality of detection units, a plurality of storage units, and an obtaining unit. The detection units are each arranged at the some components, each of the detection units being configured to detect state information and to transmit the state information and identification information to the management device. The storage units are each arranged at the some components, each of the storage units being configured to store location information. The obtaining unit is configured to obtain the location information from at least one of the storage units and to transmit the location information to at least one of the detection units. The at least one of the detection units together transmits the location information and the identification information to the management device.

Abstract: A cold water intake pipe 4 and a hot water extraction pipe 5 that communicate with multiple spiral tubes 101 and a steam supplying pipe 2 and a condensate discharge pipe 3 that communicate with a shell are connected to a corrugated spiral tube type heat exchanger 1. Between the cold water intake pipe 4 and multiple spiral tubes 101, communication paths 46 that communicate between the cold water intake pipe 4 and some multiple spiral tubes 101a are provided, and a valve 44 is provided to communicate between the cold water intake pipe 4 and the other multiple spiral tubes 101b when the force acting from the cold water intake pipe 4 becomes larger than the force acting from the other multiple spiral tubes 101b and to block the cold water intake pipe 4 from the other multiple spiral tubes 101b when the force acting from the cold water intake pipe 4 becomes smaller than the force acting from the other multiple spiral tubes 101b.

Abstract: Each of terminal devices 3 belongs to one of groups, starts up at a startup time, and performs terminal processing within a communication time after an offset time is lapsed. A control device 2 uses a sum of the communication times of the terminal devices 3 belonging to the same group as the communication time of the group. The offset time is calculated for terminal devices 3 belonging to another group which performs the terminal processing subsequently to the terminal devices 3 belonging to the previous group, based on the communication time of the previous group. A next startup time for each terminal device 3 is determined based on the communication time and the offset time, and it is set to the terminal device 3.

Abstract: A sensor fixture 100 includes a clamp body 1, a sensor 9 threadedly coupled to a center portion of the clamp body 1, clamp arms 2 and 3 respectively attached to the left and right of the clamp body 1, protrusions 4 and 5 respectively provided to the clamp arms 2 and 3, and a fixing bolt 15 attached to lower end portions of the clamp arms 2 and 3. The sensor 9 can be easily and firmly fixed by supporting a sensor attaching part at three points with the sensor 9 attached to the clamp body 1, and the protrusions 4 and 5 of the left and right clamp arms 2 and 3.

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 float type drain trap in which an inlet, a valve chamber, and an outlet are formed in a valve casing, a valve seat member, a discharge passage, a float, an operation member, a valve member that communicates between the periphery anterior to and the periphery posterior to the middle portion of the operation member when the operation member is in the advanced position and that blocks the periphery anterior to and the periphery posterior to the middle portion of the operation member from one another when the operation member is in the most retracted position is provided to the middle portion of the operation member, and a blow passage formed to communicate the periphery posterior to the valve member of the operation member with the outside distinct from the outlet.

Abstract: A control device 2 includes a preset time determinator 22 for determining a preset time to be set to a first real-time clock of a terminal device 3 based on a second real-time clock. The terminal device 3 includes a latency time timer 34 for clocking a lapse of a latency time which is a period of time from the terminal device 3 acquiring the preset time until the preset time being set to the first real-time clock and is calculated in a clocking accuracy having the number of effective figures greater than that of the first real-time clock, and a time setter 32 for setting the preset time to the first real-time clock when the latency time is lapsed.

Abstract: A check valve includes a plate-shaped valve seat member provided with a fluid discharge port, a plate-shaped valve member provided on a downstream side of the valve seat member and configured to open/close the discharge port, a coil spring provided on a downstream side of the valve member and configured to bias the valve member toward the discharge port, a spring receiving member provided for the coil spring on a downstream side thereof, and a plurality of guide rods provided at the periphery of the valve member and formed to extend in an upstream-to-downstream flow direction, each having a downstream end portion attached to the spring receiving member, and configured to guide the valve member in the upstream-to-downstream flow direction.

Abstract: An equipment monitoring system includes a control unit that switches a detection operation mode of a detector between a simple detection mode where the detector periodically performs a momentary detection operation, and a detailed detection mode where the detector performs a continuous detection operation. In the simple detection mode, a diagnosis unit diagnoses whether an operating state of monitored equipment is a normal state or a state requiring caution based on results of detection by the detector. In the simple detection mode, the control unit maintains the simple detection mode when the diagnosis unit has diagnosed that the operating state of the monitored equipment is a normal state, and switches the detection operation mode of the detector from the simple detection mode to the detailed detection mode when the diagnosis unit has diagnosed that the operating state of the monitored equipment is a state requiring caution.

Abstract: Sensor device is provided with body, formed at the interior of which is gas passage into which steam serving as detection target flows; and pressure sensor, which is installed at body so as to be in communication with gas passage and which detects pressure of steam within gas passage. Body has rod-shaped portion having cylindrical inside circumferential surface. Sensor device is provided with sheath pipe (insert) that is formed in the shape of a rod on which helical groove is formed at outside circumferential surface, and that is such that, when inserted within rod-shaped portion of body, helical groove, together with inside circumferential surface of rod-shaped portion, form helically shaped gas passage (helical passage).

Abstract: A sensor device includes: a cylindrical casing; a vibration detecting unit including a detection probe, a bottomed cylindrical holder having a bottom in which a rear end of the detection probe is inserted and fixed, piezoelectric elements disposed rearward of the detection probe in the holder and configured to contact the rear end of the detection probe, and a push member held in the holder and configured to push the piezoelectric elements against the rear end of the detection probe, the vibration detecting unit being disposed in the casing; and a coil spring that is disposed rearward of the vibration detecting unit, is configured to contact the holder to bias the holder forward, and causes a tip of the detection probe to project from the casing, wherein the tip of the detection probe is pushed against a measurement object to detect vibration of the measurement object.

Abstract: A backflow prevention apparatus is provided with a check valve and a float-type backflow prevention valve, these being installed in this order as one proceeds from upstream to downstream. The check valve comprises a valve seat; a valve member that closes the valve at the valve seat due to an upwardly directed restoring force; and a restoring force exerting member that exerts an upwardly directed restoring force on the valve member. The float-type backflow prevention valve comprises an annular valve seat; a float that rises in accompaniment to a rise in a water level of wastewater to close the valve at the annular valve seat; a guide member that guides movement of the float in a vertical direction; and a constraining member that constrains a lowermost position to which the float can move.

Abstract: A method for optimizing a fluid utilization facility. The method includes monitoring an operating state of a fluid utilization device and an operating state of a drain trap in a fluid utilization facility based on detection information obtained by detectors installed in various places in the fluid utilization facility. A running state of the fluid utilization facility is optimized based on a monitoring result.

Abstract: In a drain recovery section including a recovery tank to which drain generated in a steam-using device is collected and from which the drain is supplied to a boiler, pressure decrease in the boiler under a high load can be suppressed. A drain recovery section includes: a recovery tank in which drain generated by condensation of steam in a steam-using device is stored and from which water stored in the recovery tank is supplied to a boiler; and a control unit that controls an amount of water supply from the recovery tank to the boiler to prevent the water level of water in the recovery tank from decreasing below a predetermined tank reference water level. When the load of the boiler increases to a predetermined load, the control unit reduces the tank reference water level by a predetermined amount.

Abstract: Accurate device-condition information of and relating to a number of devices to be managed are collected in an efficient manner. The number of devices to be managed are divided between a direct collection group including some managed devices whose device-condition information are collected by detecting operation by a portable (mobile) unit for device condition detection on each one of these managed devices and an indirect collection group including the other managed devices whose device-condition information are collected by communication between each one of these managed devices and a stationary unit disposed to be capable of detecting the device-condition information of the device.