Abstract:
The invention provides a valve with a main flow passage (20) and a low flow passage (21) . The valve can be used for controlling flow of petrol, e.g. in a petrol pump of a petrol station. The main passage (20) is controlled via a servo operated valve member via a pilot valve member and the low flow passage (21) is controlled by an individual valve member. The valve housing (1) comprises a relatively large number of chambers and passages, and to increase the reliability of the valve and to reduce the manufacturing costs, all passages are worked from the chambers and into the body part leaving no unnecessary openings in the body part for subsequent sealing.
Abstract:
Es wird ein Ventilaufsatz (1 ) angegeben für ein Ventil, insbesondere Heizungs- oder Kälteventil, mit einem Gehäuse (2), einem im Gehäuse (2) in einer Betätigungsrichtung verlagerbaren Betätigungselement (8) und einem elektrischen Motor (5), der über einen Spindeltrieb (8, 27) auf das Betätigungselement (8) wirkt. Man möchte einen elektrisch steuerbaren Ventilaufsatz angeben, der kompakt aufgebaut ist. Hierzu ist vorgesehen, daß der Motor (5) direkt mit einem rotierenden Element (8) des Spindeltriebs (8, 11 ; 8, 27) verbunden ist.
Abstract:
An improved method for detection of engine faults especially suited for use on ships. The method is in particular related to the detection of a fault in an internal combustion engine having within the housing a crankshaft connected to a piston. The method includes determination of a pressure difference between the housing and the area outside the housing. If comparison of the pressure difference with a fault indicating pressure difference limit shows that the pressure difference is greater than the fault indication pressure difference limit then the presence of the fault is indicated. According to the method is the pressure difference determined by comparing the pressure existing in the housing with the pressure of the area outside the housing, while attenuating pressure changes of the area outside the housing, so that pressure changes having a duration equal to or less than a defined fault characteristic period of time are suppressed.
Abstract:
An object comprising a conductive body part, a layer comprising a refractory metal (e.g. tantalum), and a layer comprising a precious metal (e.g. platinum or gold). A metallurgical bond has been formed between the layers. Thereby oxidation of the refractory metal layer, and thereby passivation of the object, can be avoided even with small amounts of precious metal. This lowers the material costs while ensuring desired corrosion resistant properties. The object is suitable for an electrode to be used in a corrosive environment, in particular when a large conductivity is needed. Also a method of manufacturing the object. The metallurgical bond is provided by heating the object.
Abstract:
The invention provides a valve with a bellow (1, 4) and a method of making such a valve with a bellow. The bellow comprises a sidewall (1) and a bottom part (4) formed from a single plate of a sheet material. The bellow thus forms a completely sealed cavity and thus facilitates operation of a closing member inside the valve via connecting means outside the valve through the bellow. In the valve, the bellow joins with the closing means (6) and with the connecting means (7) by a welding joint (7, 9) performed across the bottom part to maintain tightness of the cavity.
Abstract:
The invention provides an assembly spring (1) and a valve incorporating such a spring. The spring is made from a wire which extends around a longitudinal axis to form windings (4, 5). The spring terminates in axially opposite end portions in first and second end windings. The énd windings each has an arcuate portion wherein the wire extends around the longitudinal axis. The end windings serve to fasten the spring in a groove of an element to which the spring is being attached. The end winding further has a free end portion (6) wherein a free wire end extends outwardly away from the longitudinal axis to form gripping means. The spring thereby facilitates easy attaching of the end winding to the element. In particular, the spring is applicable for attaching a valve element to a plunger in a valve, e.g. a servo valve.
Abstract:
Burner assembly (1) comprising a nozzle (2) engaged in a nozzle holder (3) arranged at a distal end (4) of a nozzle pipe (5) having a first fluid conduit (11) for delivering a first fluid to the nozzle (2) and a proximal end (7) of the nozzle pipe (5) being in releasable connection with a connection block (6) providing a first connection conduit (9) in communication with said first fluid conduit (11). To provide a universal burner assembly which facilitates mounting of the burner assembly to and disas sembling of the burner assembly from a furnace, the burner assembly (1) comprises connection means for releasable connection of the nozzle pipe (5) and the connection block (6), said connection means being adapted to allow free rotation of the nozzle pipe (5) with respect to the connection block (6).
Abstract:
Es wird eine Hydraulik-Ventilanordnung, insbesondere Wasserhydraulik-Ventilanordnung (1) angegeben mit einem Hochdruckanschluβ (3), einem Niederdruckanschluβ (4), einem ersten Arbeitsanschluβ (10) und einem zweiten Arbeitsanschluβ (11) sowie einer Ventilgruppe (12), die eine erste Pilotdruck-gesteuerte Ventilstufe (14) zwischen dem Hochdruckanschluβ (3) und dem ersten Arbeitsanschluβ (10) und eine zweite Pilotdruck-gesteuerte Ventilstufe (27) zwischen dem zweiten Arbeitsanschluβ (11) und dem Niederdruckanschluβ (4) aufweist. Man möchte eine kostengünstig ausgebildete Ventilanordnung angeben. Hierzu ist vorgesehen, daβ die erste Ventilstufe (14) und die zweite Ventilstufe (27) vom gleichen Pilotdruck gesteuert sind.
Abstract:
The invention provides a system with a pipe and a ventilator forcing a stream of air across an outer surface of the pipe. The pipe is separated by a partition member to form a first and a second conduit for conducting a fluid flow in an upstream and a downstream direction from a heating or cooling system. Due to the separation, it has been facilitated that ventilating devices could be located at various locations along the pipe with substantially equal exchange of thermal energy. The invention could be used for heating or cooling purposes in a building. The invention further provides a method of making such a system and a method of retrofitting an existing system to conduct two oppositely directed streams of a thermally convective fluid for heating or cooling purposes.
Abstract:
The present invention relates to apparatus for delivering a controlled or restricted flow of liquid and limiting bubble fragmentation at the inlet. This is achieved in flow restrictor with a flow channel having over most of its length a substantially constant, minimum hydraulic diameter D = 4A/W wherein A is the minimum local cross-sectional area of the channel and W is the minimum local wetting perimeter of the channel, by smoothly widening the channel at its inlet such that: at distances z from the inlet face with 0 1 the channel has a hydraulic diameter D z ≥ k * D wherein k ≥ 1.3; at distances z from the inlet face with z 1 2 , the channel has a hydraulic diameter D z with k * D ≥ D z ≥ D; and at distances from the inlet face with z 2 z with D z ≤ 1.02D, except possibly for a similar widening of the channel at the outlet. It has been found that widening the flow channel at the inlet, such that its diameter increases smoothly and gradually, and preferably by a factor of at least 1.3 over a length of at least 3 channel diameters, significantly reduces the tendency towards bubble fragmentation in microcapillary flow restrictors, and also substantially increases the yield of devices which operate well.