F17D

PIPE-LINE SYSTEMS

PIPE-LINES pumps or compressors F04; fluid dynamics F15D; valves or the like F16K; pipes, laying pipes, supports, joints, branches, repairing, work on the entire line, accessories F16L; steam traps or the like F16T; fluid-pressure electric cables H01B9/06

In this subclass, pipe-line systems are interpreted as systems described in flow sheets as well as arrangements of co-operating elements, the elements per se being covered in the relevant subclasses.

In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.

F17D1/00

Pipe-line systems conveying articles or materials through a pipe- line by means of a fluid carrier B65G51/00, B65G53/00; liquids B67D; special devices for transferring liquids from bulk storage containers into vehicles or boats or vice versa, e.g. loading or unloading vehicles or portable containers B67D7/00; conveying material which has been excavated by a dredger or soil shifter through a pipe-line E02F7/10; sewer pipe-line systems E03F3/00; thermal insulation of pipe-lines F16L59/00; central heating systems F24D

F17D1/005

for a two-phase gas-liquid flow

F17D1/02

for gases or vapours

F17D1/04

for distribution of gas

F17D1/05

Preventing freezing by heating F16L53/30

F17D1/06

for steam

F17D1/065

Arrangements for producing propulsion of gases or vapours

F17D1/07

by compression

F17D1/075

by mere expansion from an initial pressure level, e.g. by arrangement of a flow-control valve

F17D1/08

for liquids or viscous products water-main or service pipe systems E03B7/04; domestic hot-water supply systems F24D17/00

F17D1/082

for cold fluids, e.g. liquefied gas F17D1/086 takes precedence

F17D1/084

for hot fluids F17D1/086 takes precedence

F17D1/086

for explosives

F17D1/088

for solids or suspensions of solids in liquids, e.g. slurries F17D1/086 takes precedence

F17D1/12

Conveying liquids or viscous products by pressure of another fluid

F17D1/13

Conveying liquids or viscous products by gravity

F17D1/14

Conveying liquids or viscous products by pumping

F17D1/16

Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity

changing the flow or the viscosity by adding a chemical agent C09K3/00, C10M

F17D1/17

by mixing with another liquid

, i.e. diluting

F17D1/18

by heating

F17D1/20

Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves fluid dynamics F15D; damping pulsations in fluids in pipes in general F16L55/04

F17D3/00

Arrangements for supervising or controlling working operations

F17D3/01

for controlling, signalling, or supervising the conveyance of a product

F17D3/03

for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another

F17D3/05

the different products not being separated separation of contaminants by distillation B01D3/00

F17D3/08

the different products being separated by "go-devils", e.g. spheres cleaning devices moved along inside a pipe-lines by fluid pressure B08B9/04;

pigs or moles per se, their launching and detection F16L55/26

F17D3/10

for taking out the product in the line sampling in general, examining the physical or chemical properties of materials G01N

F17D3/12

for injecting a composition into the line

F17D3/14

for eliminating water separation of liquids B01D, e.g. B01D17/00; separation of gases or vapours B01D53/00

F17D3/145

in gas pipelines

F17D3/16

for eliminating particles in suspension from liquids by sedimentation B01D21/00; separation by filtration or otherwise B01D24/00 - B01D51/00; centrifugal apparatus B04

F17D3/18

for measuring the quantity of conveyed product measuring volume or volume flow, in general G01F

F17D5/00

Protection or supervision of installations arrangements for protecting foundations E02D31/00; protecting pipes from damage or internal or external wear F16L57/00, against corrosion and scale F16L58/00; investigation of the fluid-tightness of structures G01M3/00

F17D5/005

of gas pipelines, e.g. alarm

F17D5/02

Preventing, monitoring, or locating loss

F17D5/04

by means of a signalling fluid enclosed in a double wall

F17D5/06

using electric or acoustic means

F17D5/08

Protection of installations or persons from the effects of high voltage induced in the pipe-line emergency protective circuit arrangements H02H