摘要:
A robot (10) for inspection adapted to travel virtually unlimited distances through small-diameter enclosed spaces such as pipes, conduits or ducts, preferably using a fluid-driven turbine power generation and storage system (80) supplying power to wheel drive modules. The robot preferably includes a drive module (20) having a plurality of wheels (30) inclined at an angle greater than zero degrees and less than ninety degrees to the longitudinal axis of the pipe, a driver module (50) having a plurality of wheels (30) aligned parallel to the longitudinal axis of the pipe, and a power module (80). The driver module is preferably connected to the drive module such that the drive and driver modules are capable of providing the locomotive motion of the robot. The power module preferably provides the power to the drive and driver modules.
摘要:
A combined alarm and test and drain valve (1) for a fire sprinkler system has specific modifications for draining the system and allowing for flow through a specifically sized orifice under conditions simulating the flow through a sprinkler head having the same orifice size. Fluid flow occurs alternatively under a first set of test conditions in a system alarm test mode of operation, and under a second set of fluid drainage conditions in a system fluid drainage mode of operation. A mechanical force is provided by a spring (8) and a hydraulic force is provided by a pressure diferential. When performing the system alarm test function, the valve (1) opens a first size outlet opening (9), and when performing the system drainage function, the valve (1) opens a second size outlet opening (2), larger than the first opening (9).
摘要:
A multipoint data collection system (Fig. 1) uses multiple parallel data buses (12) connecting a central controller (10) to addressable sensor interfaces (Fig. 4) to permit any sensor (14-16) to be connected to a central controller (10) over any one of the data buses (12). Both ends of each data bus (12) are connected to the central controller (10), allowing sensor interfaces (Fig. 4) to be addressed even if all data buses are cut. Faults on a data bus (12) and defective sensor interfaces (Fig. 4) may be bypassed through one or more bypass buses (406) that may be addressably switched into use as desired.
摘要:
The use of an on-line condition monitoring system for the real-time observation of a number of monitored objects. The system comprises a sensor (12, 12') arranged at each monitored object (10, 10') in order to generate signals, which represent the condition of this object, a substation (14, 14'), which is arranged to receive signals from the object (10, 10') at certain measurement intervals and to transmit the so obtained data generated by the measurements to a monitoring unit which has a processing unit (16) and one or more workstations (18, 18'), at which the condition of different objects can be observed, and a data network (20, 22). The substation is further arranged to receive signals during a longer period from an object, which has been put into particular real-time observation. The substation and/or the work-station is arranged to process the signals received by the substation and to generate calculation results, which are presented to the operator. The workstation is arranged by means of real-time signal analysis user interface software to visualise to the operator the measured signals and the results calculated from them.
摘要:
Vorrichtung und Verfahren zur Messung der Schließgeschwindigkeit einer Tür, einer Klappe, eines Tores oder eines Fensters mit einem Beschleunigungssensor 20, der auf einer Befestigungsvorrichtung 16 angeordnet ist, die zur Anbringung des Sensors 20 an einer glatten Fläche der Tür, der Klappe, des Tores oder des Fensters dient.
摘要:
The fire resistance of components normally subject to a standard flame test is evaluated using low temperature model tests. Reynolds number, Froude number, the pressure ratio of the flame to the surrounding atmosphere are matched in the modelling parameters and account is taken of the Prandtl number. Also, the model flow is controlled so as to match the change of momentum flux ratio in the flow through the burner used in a standard flame test. The method allows testing of easily produced model components at temperatures less than 90°C, with savings of cost and time.
摘要:
A thermal cycling device, particularly for products meant to be subjected to thermal cycling, which comprises a cold chamber (4) and a hot chamber (3) inside which the products are to be placed cyclically; and lifting means (6,7) which are arranged so as to transfer, between the cold chamber (4) and the hot chamber (3), one portion at a time of the contents of the cold chamber (4) and of the hot chamber (3), in a cyclic manner, from one chamber to the other.
摘要:
An internal pressure-dependent characteristic (internal pressure characteristic) is measured for containers. When the closures are applied to the containers, the internal pressure characteristic or parameters relating to the closures or containers required for the measurement of said internal pressure-dependent characteristic is detected. The containers are marked, at the very latest when said closures are applied, whereby said marking enables the values detected during the application of said closures to be allocated to the corresponding containers. The internal pressure of the container is determined on the basis of the value of the internal pressure characteristic measured after a certain amount of time has elapsed since the closures were applied and by comparison with the internal pressure characteristic measured during the application of the closure, taking into account the parameters thus detected.
摘要:
The invention concerns a thermal fatigue test stand for combustion engine cylinder heads comprising in combination: a cylinder head (C) support (14) having at least a cylinder head zone capable of being exposed to the engine combustion; at least a burner (11) for directing a flame on the whole said zone; and at least a heat flux sensor (171) located in said cylinder head thickness at said zone to verify whether the heat flux produced by the flame is at least approximately in conformity with a predetermined value. The invention also concerns a method for calibrating such a test stand, and a method for testing cylinder heads. The invention is particular useful for developing, both from the metallurgical and geometrical viewpoints, aluminium alloy cylinder heads.