F-Type Vertical Constant Spring Supports for a 9,000 lb. Load

October 26, 2021

 

Ptp constant spring supports 83774 r2

PT&P manufactured compact spring supports designed for loads up to 9,000 lb. Constants are used in Geothermal, Coker units, HRSG units, and other facilities where there is substantial thermal growth in the piping. Green energy (popular to offset carbon emissions) applications such as solar, wind, and hydro also utilize constants. The figure 100 type-F constant spring supports are designed to support piping from below using a sway strut because horizontal space was not available in the system. This vertical constant spring support was the first of its kind designed and manufactured by PT&P for the largest power providers in the South using a diverse fuel and energy supply of coal, nuclear, oil, gas, hydro, and some renewable energy. The base plate is bolted directly to the top of the steel or floor and the sway strut assembly is attached to the arm (cam) of the constant. With the constant bolted in position below the piping and the sway strut assembly attached via a pipe clamp above, when the pipe goes through its upward vertical movement, the constant maintains an equal and opposite force on the piping. If there is also horizontal movement (axial or lateral) in the piping, this type of constant is well suited because of the slight “arch” in the travel path of the internal cam. The constant in the first picture maintains a constant load of 7,000 lb. while the constant in the second picture maintains a load of 9,000 lb. on the pipe throughout its 4” of total travel. They are 36” high with two gussets at the base plate for added strength encountered under hydrotest loading. They are fabricated from A36 carbon steel and hot-dipped galvanized for corrosion protection. Standard load and travel testing were performed on both constants to ensure proper field operation. Piping Technology is a leader in the design, engineering, and manufacturing of pipe supports and our products have been in service for over 40 years.

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Compact Spring Supports Designed for an Oil Refinery

October 19, 2021

Compact Spring Supports Designed for 9k Load at an Oil Refinery

Type: Compact Spring Supports
Material: Carbon Steel w/ Hot-Dipped Galvanized (HDG)
Design: 9,000 lb. Load | +/-0.125″ Vertical Movement
Testing: Load Testing

PT&P custom-designed 76 compact spring supports or “disc spring” supports for a major oil refinery. This type of spring supports is ideal for locating under equipment flanges to limit excessive loads on sensitive equipment. PT&P has supplied custom compact springs for over a decade as the industry leader in plants all over the world. Compact springs are used for small travel systems to prevent equipment failures, assure safe plant operations, and reduce operational costs. Such springs can support loads equal loads to conventional springs while using 50% less space. If not addressed, pipe strain can cause misalignment, thermal expansion, and pipe-lift off resulting in strain on expensive equipment. For example in a typical refinery, upwards of $15M a year is spent on pump repair alone due to pipe strain issues. Compact springs are used in systems to support Centrifugal pumps and compressors, air-cooled heat exchangers, vessels, and steam turbines while addressing regulatory codes for API, ASME, UBC, and government compliance for organizations such as OSHA, EPA, WISHA, etc.

The springs are stainless steel Belleville washers and the housing is fabricated from A-36 carbon steel with a hot-dipped galvanized finish to protect against corrosion. The assemblies are 3″ high, designed to support a 9,000 load and movement of +/-.125″ (upward). Each assembly underwent load testing before shipment. Compact springs are specifically designed to minimize excessive loads on process equipment by managing nozzle loads and the flange seal and can be installed directly under the equipment. Another benefit of compact springs is to address corrosive environments (saltwater, marine air, or chemicals) by manufacturing them with metals like stainless steel and/or using amorphous glass coatings making them impervious to corrosion.

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Pre-Insulated Pipe Supports for High Temperatures at a Phenol Plant in Texas

October 4, 2021

Pre-Insulated Pipe Supports for High Temperatures at a Phenol Plant in Texas

PT&P manufactured 48″ diameter pre-insulated pipe supports for a high-temperature pipeline at a phenol plant in Texas. Phenol is an important aromatic organic compound used in several products like plastics, nylon, epoxies, detergents, mouthwash, antiseptics, and other pharmaceutical drugs. PT&P has consistently supplied products to these types of plants for many years and has done work for most of the largest phenol plants in the world. The production of phenol from petroleum-derived feedstocks can involve temperatures, where large bore piping can reach 250°F. Phenols are used in a diverse range of end markets including construction, automotive, electronics, and fibre industries. Some other plants that utilize large bore piping at high temperatures, are Biofuels, Semiconductor, and Old Sands Extraction processing plants. These hot shoes, in particular, are designed for pipe sizes up to 48″ in diameter. They include 6″ thick by 4″ width calcium silicate insulation, hot-dipped galvanized steel, and are designed for a load of 7,000 lb. Standard quality tests were performed before shipment. At Piping Technology and Products, we can supply a wide range of different types of pipe supports to meet your design specifications. This enables our clients to order from one vendor as opposed to several different vendors to manage the supply chain for project success in the most cost-effective manner while keeping deliveries on time. This order consisted of six different types of supports such as variable assemblies, constant support assemblies, sway struts, and pre-insulated pipe supports along with associated “off the shelf” hardware items. We have served the piping industry for over 45 years providing a unique array of engineering and manufacturing experience to an ever-changing industry.

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