What is API plan 32?

API Plan 32 delivers a clean flush fluid into the seal chamber from an external source. Typically used with a close-clearance throat bushing, this arrangement can be used to ensure a higher pressure in the seal chamber.

What are API plans?

These are standardized flushing piping arrangements that are widely used in the industry. Customer specific variants of these plans are possible. API Piping plans help to ensure good conditions for mechanical seal operation as well as improving safety and pump reliability.

What is API plan 52?

API Seal Plan 52 utilizes a reservoir and circulates an unpressurized buffer fluid between the inboard and outboard seals. To provide positive circulation through the support system and into the seal, a pumping ring is employed.

What is API plan 53?

API Plan 53B circulates a pressurized barrier fluid between the inboard and outboard seals. The source of pressurization is a bladder accumulator. Plan 53B has the advantage of not allowing gas absorption into the barrier fluid which may allow for operation at higher pressures than Plan 53A.

What is API plan 23?

API Plan 23 utilizes a circulation device, typically a pumping ring, to route the fluid from the seal chamber through a cooler before returning the cooled fluid to the seal chamber. A throat bushing isolates the cooled seal chamber flush fluid from the hotter pumped liquid.

MECHANICAL SEAL PLAN#32 EXPLAIN IN HINDI API682

What is API plan 11?

API Plan 11 recirculates flow from a high‐pressure section of the pump, typically the discharge piping, through a flow control orifice to the seal. Plan 11 is the default flush plan for most pumps. API Plan 11.

What is pumping ring in mechanical seal?

A pumping ring in the seal circulates the buffer fluid (pressure less than seal chamber) to the reservoir. This flush plan is very common in applications with VOCs (Volatile Organic Compounds), however if not set up similar to the schematic in Figure 8.3.

What is API plan 54?

API Plan 54 is a custom engineered system that delivers a pressurized barrier fluid to the seal chamber. The barrier liquid is circulated to and from the seal chamber via a pump located on an external reservoir. This fluid is maintained at a pressure greater than that found in the seal chamber.

What is the difference between Plan 53A and 53B?

The major difference in the plans is that Plan 53A uses an external reservoir, while Plans 53B and 53C run within a closed loop system with a make-up system piped to it for replenishment of the barrier fluid.

What is buffer fluid and barrier fluid?

When this fluid is unpressurized, it forms a buffer between the pumped fluid and atmosphere and is commonly referred to as a buffer fluid. When pressurized, it forms a barrier between the pumped fluid and atmosphere and is known as a barrier fluid.

Why seal flushing is required?

The purpose of the maintenance procedure is to flush any debris from between the seal faces. That debris may have come from particulates in the process fluid, corrosion from aging piping, or metal from an abraded pump volute or impeller.

How does 53c plan work?

Barrier fluid system pressurized by a piston accumulator supplying clean liquid for an arrangement 3 pressurized dual seal. The barrier pressure is generated from the seal chamber pressure. The system is self-energizing and reacts to fluctuations in the seal chamber fluid pressure.

How many types of mechanical seals are there?

8 Types of Component Mechanical Seals.

What is API standard for pumps?

API 610 is the API standard about centrifugal pumps and is primarily intended for use in the petroleum, natural gas and chemical industries. Although the 1st through 7th Editions of API 610 included specifications for mechanical seals, beginning with the 8th Edition, API 610 defers to API 682 for seal specifications.

What are API plan for seal?

Detailed API seal piping plans ensure minimal seal face wear by maintaining the optimal seal chamber environment. Since they were first formulated, seal piping plans have been maintained and remodeled by the American Petroleum Institute (API). Current plans are based on API 682 and are sorted numerically.

What is API flushing plan?

Description: Process side API seal flush plans use a single mechanical seal to prevent pump (process) fluid from leaking. In this arrangement, the process fluid is the lubricant. It provides a thin film between the seal faces to reduce friction and absorb heat.

What is a seal in engineering?

A mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. in a pumping system), containing pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion in the case of sealants and compression in the case of gaskets.

What is double mechanical seal?

A double mechanical seal is a type of mechanical seal with two primary seals or sets of faces, it can operate in various arrangements with a) a barrier (containment) between the sets of faces or b) a buffer (mixing).

What is seal chamber pressure?

The seal chamber pressure is a function of wear ring clearance as well as size and location of the balance holes. Two Stage Horizontal Pumps. Impeller arrangement can have two. configurations: 1.)

Why seal is used in pump?

Mechanical seals are critical components in centrifugal pump systems. These devices preserve the integrity of the pump systems by preventing fluid leaks and keeping contaminants out. Mechanical seal systems are used on various seal designs to detect leakage, control the seal environment and lubricate secondary seals.

How do I choose a mechanical seal plan?

How does pump seal flush work?

This method consists of a minimal flow of a clean, relatively cool liquid (usually water) from an external source injected into the seal gland flush connection at a pressure higher than the pump seal chamber pressure. The external flushing liquid flows past the seal and into the pump, mixing with the pumped fluid.

What is a Type 21 mechanical seal?

General-duty Elastomer Bellows Shaft Seal

The Type 21 is ideal for use in centrifugal, rotary and turbine pumps, compressors, chillers and other rotary shaft equipment. It is also commonly used by the wastewater and water systems industries for applications such as waste treatment, potable water and HVAC.

What are the two main parts of a mechanical seal?

A stationary ring (usually the stationary seat) arranged in the stationary part (casing) Secondary seal (usually O-ring) between these parts.

What are the three basic parts of a mechanical seal?

Typically, a mechanical seal contains:

Secondary static seals, V-rings, O-rings or wedges. Static seal or stationary component.