The invention relates to a pressurization unit for use in processing equipment handling high pressure fluid, where the pressurization unit comprises at least one inlet and an outlet, the pressurization unit being adapted to receive a feed fluid at a feed pressure level at the inlet, being adapted to isolate the received feed fluid from the inlet and from the outlet and being adapted to increase the pressure of the fluid to a higher predetermined level and further being adapted to output the fluid through the outlet into the high pressure process while still isolated towards the inlet.

A high integrity protection system includes a flow line including an inlet configured to be connected to a first source of pressure and an outlet configured to be connected to a downstream system. A first subsystem is installed on the flow line between the inlet and the outlet. A second subsystem is installed on the flow line between the inlet and the outlet, and the second subsystem is in a parallel flow configuration in relation to the first subsystem. The system includes a second source of pressure configured to be fluidically connected to the first subsystem and the second subsystem.

A high integrity protection system includes a flow line that includes an inlet and an outlet. The inlet can be connected to a first source of pressure. The system includes a first surface safety valve (SSV), a second SSV, and pressure sensors installed on the flow line between the inlet and the outlet. The system includes a logic solving processor in communication with the pressure sensors, the first SSV, and the second SSV. The logic solving processor can perform operations including transmitting signals to control the first SSV and the second SSV. The system includes a second source of pressure that can be connected to the flow line between the inlet and the first SSV. When the first source of pressure ceases to provide fluid pressure to the system, the second source of pressure can provide fluidic pressure to the flow line to test a fluidic integrity of the system.

A pneumatic pressure regulation valve comprising: a valve inlet; a valve outlet; a piston arranged to control gas flow from the inlet to the outlet; a sense line fluidly connecting the inlet to a pressure regulation chamber and with a pressure relief valve connected thereto to limit the pressure in the pressure regulation chamber; wherein the piston is arranged between the pressure regulation chamber and the valve outlet such that the position of the piston is determined by the relative pressures in the regulation chamber and the valve outlet and the position of the piston controls the flow from the valve inlet to the valve outlet; wherein the sense line comprises a flow restriction upstream of the pressure relief valve. The flow restriction addresses instability that can arise from large volumes of connecting tubes or pipes in the sense line.

A cylinder filling system is configured to automatically fill fluid cylinders with fluid at varying fluid pressures. The cylinder filling system may include a plurality of pressure control manifolds operatively connected together and disposed in a fluid circuit between a fluid storage container and a fluid outlet. A control unit may be in communication with the plurality of pressure control manifolds. The control unit is configured to operate the plurality of pressure control manifolds to deliver fluid at a rated fluid pressure of a fluid cylinder that connects to the fluid outlet.

A method of controlling fluid pressure in a closed system including using a pressure regulating unit connected to the system, the unit including a first conduit fluidly connecting the closed system to an external system. A first regulating valve is interposed between the external system and one end of the conduit and a second regulating valve interposed between the closed system and the other end of the conduit. The method further includes: a) opening one of the first or second regulating valves; b) closing said one regulating valve; c) opening the other regulating valve; d) closing the other regulating valve; and e) repeating steps a) to d) in turn until the desired fluid pressure is achieved in the system.

A control system may include a recirculation circuit configured to direct fluid from an outlet of a fluid pump, via a first portion of the recirculation circuit, to an inlet of the fluid pump via a second portion of the recirculation circuit. The control system may include a control valve in the recirculation circuit between the first portion and the second portion. The control system may include a check valve downstream of the first portion. The control system may include a controller configured to cause a pulse of the control valve that opens the control valve for a time interval and closes the control valve, and to transmit a signal to indicate that the check valve allows reverse flow of the fluid based on a pressure, in the time interval, of the fluid in the first portion being indicative of the check valve allowing reverse flow of the fluid.

Disclosed in the present invention is a system and method for supplying acetylene to an apparatus using acetylene, the system having at least one acetylene storage apparatus and an acetylene content analysis apparatus. The system and method disclosed in the present invention can utilize the capacity of an acetylene cylinder to a higher degree; before the solvent impurity concentration in acetylene gas reaches a level where it is no longer suitable, a more accurate understanding of the usable acetylene amount in the acetylene storage apparatus can be gained through detection, thereby reducing the number of times that the acetylene storage apparatus is refilled and replaced, and lowering the user's total costs.

The present disclosure provides an operation control apparatus of a direct control solenoid valve. The apparatus includes a direct control solenoid valve configured to control an operation of a clutch via a control pressure and to supply the control pressure to a clutch by magnetic force generated by a current control; and a hydraulic pressure supply valve configured to supply a hydraulic pressure to the direct control solenoid valve, wherein the hydraulic pressure supply valve is operatively associated with a clutch control.

The invention relates to a pressure reduction device for use in processing equipment handling high pressure and high temperature fluids with a content of abrasive components, where the pressure reduction device comprises a number of pipes with a length and internal cross section adapted to reduce the pressure, where the length, the cross sectional area and the number of pipes are chosen to have an average flow velocity within each pipe of less than 30 m/s.