摘要:
The present disclosure is directed to a method and system for detecting activation of a pressure relief device connected to a storage tank containing a pressurized gas. The method includes calculating a pressure relief device release rate based on a set of inputs, wherein the set of inputs includes at least one of a storage tank volume, a pressure relief set point, an orifice size of the pressure relief device, a gas density, and a reseat point for the pressure relief device. The method further includes monitoring the pressure within the storage tank and calculating a differential pressure reading over time, comparing the differential pressure reading over time to the pressure relief device release rate, and detecting a pressure relief device activation based on the comparison result.
摘要:
A system actively regulates the fluid pressure entering the pump (16) of a fluid-dispensing system to provide a more uniform fluid flow exiting the pump (16). The pump (16) is supplied with fluid from a pressurized reservoir (15) (e.g., that is pressurized from an external air source (19), or by mechanical or electrically-driven pressurization). A pressure sensor (17) monitors the fluid pressure in the fluid supply line (23) between the reservoir (15) and pump (16). A controller (21) receives this fluid pressure reading as an input to regulate the pressurization of the reservoir (15). Optionally, a second pressure sensor (24) can be used to monitor the fluid pressure at the pump exit to provide an additional input for the controller (21).
摘要:
The present disclosure is directed to a compressed fuel storage system. The compressed fuel storage system may include an electrochemical compressor and one or more fuel dispensing units. The electrochemical compressor may be configured to compress a fuel source. Additionally, the compressed fuel storage system may include at least one low pressure compressed fuel reservoir fiuidly connected to the electrochemical compressor and the fuel dispensing units and at least one high pressure compressed fuel reservoir fiuidly connected to the electrochemical compressor and the fuel dispensing units.
摘要:
An enclosure for a dry-type transformer includes a bottom wall, a plurality of sidewalls coupled to and extending from the bottom wall, and a top wall coupled to the sidewalls so as to be spaced from the bottom wall. The top wall includes an opening therein. The bottom wall, sidewalls and top wall define an enclosed space for housing a dry-type transformer. Pressure relief structure is associated with the top wall and has at least one flap constructed and arranged in a closed position, to cover the opening. In the event an arc flash occurs in the enclosure creating gas pressure in the enclosure, the flap is constructed and arranged to move from the closed position to an opened position due to the gas pressure acting thereon, permitting the gas pressure to escape from the top of the enclosure through the opening.
摘要:
Provided are various devices and processes that harness the inherent kinetic energy of a flowing pressurized fluid to drive a compressor to compress a fluid without any need for electrical or chemical energy. The flowing fluid flows over a boundary layer disk turbine, or Tesla turbine, which is mechanically coupled to a compressor that compresses a fluid. The flowing fluid may be a natural gas from a hydrocarbon recovery operation. The compressed fluid may be a vapor gas from a hydrocarbon production, processing, or storage facility. Harnessing the kinetic energy of the flowing fluid increases economic efficiency of the process, while also avoiding unwanted emissions adverse to the environment and public health.
摘要:
A pulse-width-regulating valve (1) for the regulation of a fluid flow and/or a fluid pressure is described, the pulse-width-regulating valve (1) comprising a cut-off valve (1a) connected in series with an inflow valve (1b), at least one of the cut-off valve (1a) and the inflow valve (1b) being provided with an axially displaceable or rotatable valve element (10a, 10b) which has an opening position and/or a closing position at a distance from a starting position of the valve element (10a, 10b). A method of operating a pulse-width-regulating valve (1) comprising the following steps is described as well: regulating a valve gear device (2) by means of a valve synchronizer (23), in accordance with at least two displacement curves (9a, 9b); and by means of one or more valve actuators (20, 20'), displacing or rotating corresponding valve elements (10a, 10b) arranged in the pulse-width-regulating valve (1).
摘要:
Exemplary embodiments are directed to devices, methods and systems capable of pressurization, generally involving a flow system that includes a pressurized reservoir, at least one pump including a pump control valve, an outlet port, a shut-off valve and a vent valve. The flow system is configured to be pressurized. The shut-off valve is disposed between the pressurized reservoir and the at least one pump. The vent valve is disposed between the at least one pump and the outlet port. The shut-off valve, the vent valve and the pump control valve of the at least one pump are configured to actuate in a coordinated manner to control a pressurization of the flow system. Exemplary embodiments are further directed to devices, methods and systems for column switching, generally including at least a first column, a second column and a column switching valve.
摘要:
The disclosure relates to a check valve having a housing, a connector mounted inside the housing, a flapper joined to the connector, and a biasing member joined to the connector at one end and joined to the flapper proximate another end. The biasing member is internal to the housing, and includes a compression spring.
摘要:
Apparatus for a network of conduits distributing liquid that is coupled to a supply of liquid and to a network. At least one sensor is coupled in fluid communication with the network and derives a level of demand of liquid from the network. At least one valve is coupled in fluid communication with the supply of liquid and with the network to control the flow of liquid to the network. A control unit is coupled to the sensor and to the valve, to command operation of the valve, and in absence of demand of liquid, to maintain a reduced pressure of liquid in the network relative to the supply pressure. The apparatus has a reservoir that accumulates liquid and to releases liquid in response to, respectively, a rise and a drop of pressure of liquid in the network, whereby reduction of pressure by release of liquid is avoided.
摘要:
Elektrohydraulische Vorsteuerung 1 für ein hydraulisches Gerät, das ein Proportionalwegeventil, eine Verstellpumpe oder ein Versteilmotor sein kann, die zwei proportionalwirkende Druckregelventile 3 enthält und mit einem Steuerblock 2 versehen ist, der die hydraulischen Ventilteile 4 in Bohrungen aufnimmt und an den die zugehörigen Proportionalmagnete angeflanscht sind, wobei die Proportionalmagnete eine gemeinsame elektrische Steckverbindung 5 aufweisen und wobei die beiden Proportionalmagnete 3 durch ein Umspritzen mit Kunststoff zu einer Baugruppe zusammengefügt sind, die am Steuerblock 2 befestigt ist und dabei relativ zu den in dem Steuerblock aufgenommenen Ventilbauteilen 4 mittels senkrecht zur Bewegungsrichtung der Anker wirkender Positionierhilfen genau ausgerichtet ist.