A pressure reduction plant including two or more valve assemblies arranged in parallel and including: pressure reducers for fuel gas from the supply pressure to the delivery pressure; pilot valves to transmit a control pressure to the pressure reducers when the delivery pressure reaches the calibration value of the pilot valves; derivation conduits to transmit the delivery pressure to the pressure reducers, the pilot valves and the pressure reducer devices; command lines to transmit the control pressure from the pilot valves to the pressure reducers. One of the pilot valves is configured with a calibration value greater than the calibration value of all the remaining pilot valves and each command line is configured to communicate with a control line.

A pressure reduction plant including two or more valve assemblies arranged in parallel and including: pressure reducers for fuel gas from the supply pressure to the delivery pressure; pilot valves to transmit a control pressure to the pressure reducers when the delivery pressure reaches the calibration value of the pilot valves; derivation conduits to transmit the delivery pressure to the pressure reducers, the pilot valves and the pressure reducer devices; command lines to transmit the control pressure from the pilot valves to the pressure reducers. One of the pilot valves is configured with a calibration value greater than the calibration value of all the remaining pilot valves and each command line is configured to communicate with a control line.

A multiphase flow mixed delivery device employing reciprocating driving performed by a liquid in two chambers comprises a left container (1), a right container (2), a power pump (3), a data acquisition and control system (4), a solenoid valve group, a check valve group, an inlet manifold (5), and an outlet manifold (6). A vacuum suction chamber and a compression discharging chamber alternately formed by the two containers serve as a suction chamber and a discharging chamber of a multiphase mixed flow delivery pump. After gas in a liquid-gas mixture is separated in the container, the gas is compressed by a liquid, and is discharged out of the container. The power pump constantly operates in a pure liquid working condition, thereby eliminating the issue in which a liquid with a high gas content affects the power pump. The invention requires only an ordinary water pump to achieve mixed delivery of a multiphase flow, and the ordinary water pump can even serve as a vacuum pump and a compressor for pure gas and operate continuously. Also disclosed is a multiphase flow mixed delivery method using the multiphase flow mixed delivery device employing reciprocating driving performed by a liquid in two chambers.

A multiphase flow mixed delivery device employing reciprocating driving performed by a liquid in two chambers comprises a left container (1), a right container (2), a power pump (3), a data acquisition and control system (4), a solenoid valve group, a check valve group, an inlet manifold (5), and an outlet manifold (6). A vacuum suction chamber and a compression discharging chamber alternately formed by the two containers serve as a suction chamber and a discharging chamber of a multiphase mixed flow delivery pump. After gas in a liquid-gas mixture is separated in the container, the gas is compressed by a liquid, and is discharged out of the container. The power pump constantly operates in a pure liquid working condition, thereby eliminating the issue in which a liquid with a high gas content affects the power pump. The invention requires only an ordinary water pump to achieve mixed delivery of a multiphase flow, and the ordinary water pump can even serve as a vacuum pump and a compressor for pure gas and operate continuously. Also disclosed is a multiphase flow mixed delivery method using the multiphase flow mixed delivery device employing reciprocating driving performed by a liquid in two chambers.

An orifice module for a flow switch system has a cylindrical body which is symmetric about a central axis which defines a metering orifice. An axial central hub holds the stem. The hub connects to the cylindrical body by at least three support spokes which forms a plurality of flow channels angularly disposed about the central axis. The module interacts with the flow switch to enhance the function of the flow switch and also reduces turbulence in the fluid flow system.

A bulk adhesive transfer system for transferring adhesive particulate to a melter includes a bulk supply and a transfer device, which may define a hopper of the melter, a mobile bin, and/or a buffer unit. The transfer device is configured to receive unmelted adhesive particulate from the bulk supply and then be selectively docked with the melter to transfer the adhesive particulate to the melter. The bulk adhesive transfer system may also include a knife gate valve device, which includes a plurality of ports that sequentially open and close to control flow of the adhesive particulate towards the melter. The bulk adhesive transfer system simplifies refilling operations for a melter while enabling continuous operation of the melter, even when the transfer device is undocked for removal from the melter.

A bulk adhesive transfer system for transferring adhesive particulate to a melter includes a bulk supply and a transfer device, which may define a hopper of the melter, a mobile bin, and/or a buffer unit. The transfer device is configured to receive unmelted adhesive particulate from the bulk supply and then be selectively docked with the melter to transfer the adhesive particulate to the melter. The bulk adhesive transfer system may also include a knife gate valve device, which includes a plurality of ports that sequentially open and close to control flow of the adhesive particulate towards the melter. The bulk adhesive transfer system simplifies refilling operations for a melter while enabling continuous operation of the melter, even when the transfer device is undocked for removal from the melter.

In one embodiment, the method begins by flowing a product stream through an upstream pipeline comprising a first product stream. The product stream is then continuously analyzed with an automated analyze to produce data. The first product stream downstream is then directed downstream of the automated analyzer to a downstream first product stream pipeline. The method then changes the product stream flowing through the upstream pipeline from the first product stream to a second product stream without purging the first product stream from the upstream pipeline, thereby creating a transmix product stream within the upstream pipeline wherein the transmix product stream comprises a mixture of the first product stream and the second product stream. The data from the automated analyzer is then analyzed with an automatic splitter, wherein the product stream flowing through the upstream pipeline no longer matches the physical and/or chemical characteristics of the first product stream. The automatic splitter then directs the transmix product stream downstream of the automatic splitter to a downstream transmix pipeline. As the data from the automated analyzer is still analyzed by the automatic splitter the product stream flowing through the upstream pipeline matches the physical and/or chemical characteristics of the second product stream. The automatic splitter then directs the second product stream downstream of the automatic splitter to a downstream second product stream pipeline.

The invention relates to a backfeeding installation (30) which comprises: at least one stationary compressor (21) between a gas network (15) at a first pressure and a gas network (10) at a second pressure higher than the first pressure, and an automaton (33) for controlling the operation of each stationary compressor. The backfeeding installation also comprises: a distribution unit (31) for distributing gas from the gas network at the first pressure to each stationary compressor and to the gas inlet connector at the first pressure for at least one additional compressor (29, 45, 46); and a collection unit (32) for collecting gas from each stationary compressor and the gas outlet connector at the second pressure for each additional compressor. The automaton is configured to control the operation of each stationary compressor and of each additional compressor as a function of the compression capacity of the operational stationary and additional compressors.

The invention relates to a backfeeding installation (30) which comprises: at least one stationary compressor (21) between a gas network (15) at a first pressure and a gas network (10) at a second pressure higher than the first pressure, and an automaton (33) for controlling the operation of each stationary compressor. The backfeeding installation also comprises: a distribution unit (31) for distributing gas from the gas network at the first pressure to each stationary compressor and to the gas inlet connector at the first pressure for at least one additional compressor (29, 45, 46); and a collection unit (32) for collecting gas from each stationary compressor and the gas outlet connector at the second pressure for each additional compressor. The automaton is configured to control the operation of each stationary compressor and of each additional compressor as a function of the compression capacity of the operational stationary and additional compressors.