scotch yoke hydraulic pump quotation

In real life scenarios with critical service valves, there are situations such as the loss of air or loss of power where a valve must be forced into a position other than its current position. In those critical times, the right accessories on an actuator will allow an operator to move a valve from closed to open or open to closed, regardless of the position it was designed to “fail” to. Max Air’s HD line of scotch yoke actuators offers this capability. Shown here is our hydraulic manual override system. A self-contained hydraulic reservoir and hand pump are utilized to power an auxiliary hydraulic cylinder and drive the actuator to the required position. The Double Acting actuator will stroke the valve, manually, either clockwise or counter clockwise as required. The Spring Return unit compresses the spring and drives the actuator to the opposite of it’s fail position. i.e. Opens a valve with a fail closed actuator or closes a valve with a fail open configuration.

The CVS Hydraulic Actuator uses a scotch yoke mechanism to convert linear piston motion to a 90 degree rotation. The actuator incorporates key materials for construction, such as aluminum drive case, fiber wound cylinders, and do not use brass or bronze components to allow for use in sour gas applications. The CVS Scotch Yoke Hydraulic actuator is well suited for operating plug, ball, butterfly, dampers and other devices requiring 90o turn rotation. (±4 degrees of additional angle adjustment)

The MS Series Electro-Hydraulic actuator by PDC LLC is the ideal product for any general service on/off application, with fail safe options available, if desired. Consisting of a self-contained, bi-directional motor driven pump with an integral hydraulic cylinder and mechanical drive modules.

The MS Electro-Hydraulic’s modular design allows you to choose the best combination for your service conditions. Consisting of a mechanical drive, a control box with a choice of optional Feedback and optional Fail-Safe configuration if desired.

As a full-featured, self-contained actuator the general service MS Electro-Hydraulic actuator supplies various input and output capabilities which include:

Valworx 5320/5321 series quarter turn scotch yoke actuators are ideal for actuating butterfly valves or other applications requiring high torque at the beginning or end of stroke.

Paladon Systems was originally founded in 1981 as a job shop, or actuation integrator; it was not until 1999 that Paladon began manufacturing their own Scotch-Yoke actuators. “When we decided to start up our manufacturing operations, we had a well-known designer take over the task of designing the Paladon Actuator, which were created in our Borgonovo Val Tidone, Italy location,” said Brian Crook.

Paladon is a global company with hometown roots. The company builds products in Texas and Italy, while the U.K. office is dedicated to sales, engineering and aftermarket support service. Each facility is able to offer their customers a personal touch that is unique to each location. “We want to make sure our products are delivered on time to our customers, and meet the exact specifications they need,” relayed Crook. “Our Houston, TX facility builds scotch yoke, direct gas, hydraulic and electro-hydraulic, and complete turnkey packages for our customers in the Americas. Our Italy facility manufactures the complete product line, including parts, modules, and complete turnkey packages. The facility in the U.K. focuses on subsea, ASV, and specialty packages.” In all locations, the company builds High Integrity Pressure Protection System (HIPPS) and High Pressure Unit (HPU) packages as well.

Paladon Americas builds many styles of actuators, including the Pneumatic/Hydraulic Scotch-Yoke, Direct Gas Scotch-Yoke, Gas/Oil Scotch-Yoke, Electro-Hydraulic Scotch-Yoke, Self-Contained Hydraulic ESD, HPU and HIPPS packages, Pipeline Monitoring Systems, and Autonomous Solar and Wind Turbine Systems. In addition, the company boasts 80% of their final products are customized to customers’ specific requirements.

In 2016, the Houston facility introduced their new Electro-Hydraulic Actuator and Control System. “We approached our customers, end users and operators, heard their feedback, and created this new system for them. We wanted to address the stigmas attached to most electro-hydraulic systems,” said Crook. “Examples of issues included leaking and difficulty setting the switches that will start and stop the motor.” Paladon was the first to introduce an on-board logic controller on the unit, which eliminates the need to use a limit switch to start/stop the motor. “We are able to provide valuable feedback to a control room, which features a low fluid level alarm, motor run protection, and valve jam/travel alarms. Our goal was to address industry problems, and build a smarter product that will not destroy itself if a single component fails.”

More recently, the company has begun an evolution of the EHYS-Series Electro-Hydraulic Scotch-Yoke actuators to include new features, such as autonomous operation, integrated pipeline monitoring, and solar and/or wind turbined powered with a battery backup. Crook admitted, “We want to bring our product into a class of its own, and so we are raising the bar on features, delivery, and value for customers.”

The SCHY-Series Self-Contained Hydraulic ESD was also recently introduced. “This is a simple hydraulic scotch-yoke, but it does not require power. It uses a hydraulic hand pump to open/close a valve, and we can add in a high/low pressure pilot, solenoid or limitswitch, which makes the unit a completely autonomous shutdown system,” stated Crook.

Traceability is also an important aspect of their operations. Every quote is sent to the customer with an ISA style quote form, a brochure, topworks dimensions, and standards. Every order ships with a serial number and the customer purchase order number (PO#) on the IOM. All electrical units ship with the customer specific wiring diagram. Crook explained, “We also track who built each unit to ensure accountability, quality and consistency. For our electro-hydraulic units, the program logic is serialized and stored on a local server for quick internal access.”

The aim of the paper is to design and develop a water pumping system using scotch yoke mechanism. The reciprocating motion of the plunger is utilized for the pumping action. The plunger is reciprocated with the help of a cam plate. By this action the water is pumped with very high pressure and to various heads. This can be utilized for various applications like lubrication in machines and water pumping in agriculture field. The cam plate gets the drive from the motor for its rotation and converts that rotary motion to useful dual side reciprocating motion. The motor is powered with the aid of electric power. Thus the water is pumped from source to various heads.

Every one of us will need of some kind of water source for drinking, bathing, washing clothes, preparing food and for irrigation. We may get the water from various sources like, lake, river, ponds, open well, bore well. So we have to pump the water from the source and use the water for the various purposes. Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work by moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power which usually come in many sizes that vary from microscopic for use in medical applications to large industrial pumps.

Generally, these mechanical pumps have numerous applications such as pumping water from wells, filtering of dust in the aquarium, filtering the ponds and aeration, also used in car industry for water-cooling and fuel injection, and finally in the energy industry for pumping oil and natural gas or for operating cooling towers. This Scotch yoke mechanism could be used for conversion between rotational motion and linear reciprocating motion. In general, this linear motion can take place in various forms depending on the shape of the slot, but mostly the basic yoke with a constant rotation speed produces a linear motion that is simple harmonic in nature.

The experimental setup consists of water pump whose pumping shaft is connected to the yoke plate of the scotch yoke mechanism the rotating disk consists of the yoke supporting pin is inserted into the yoke plate for controlling the translation motion.

The rotation of the plate is carried out with the help of motor. When the motor is turned on then it rotates the plate attached with it and this rotation is converted into translation by means of yoke plate, this translation motion activates the piston of the pump to take to and fro motion, the water is sucked and transmitted to the required designation.