Abstract

A pig pumping unit is provided that allows eight passes to be made simultaneously with a single pumping unit. A single engine is used to drive three or four pumps, each connected into separate pumping units. Two engines may thus be used to drive up to eight pumps in a single trailer.

IPC Classes  ?

• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles
• F15B 1/00 - Installations or systems with accumulatorsSupply reservoir or sump assemblies

Abstract

A pig pumping unit is provided that allows eight passes to be made simultaneously with a single pumping unit. A single engine is used to drive three or four pumps, each connected into separate pumping units. Two engines may thus be used to drive up to eight pumps in a single trailer.

IPC Classes  ?

• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles
• F15B 1/00 - Installations or systems with accumulatorsSupply reservoir or sump assemblies

Abstract

A pig pumping unit is provided that allows eight passes to be made simultaneously with a single pumping unit. A single engine is used to drive three or four pumps, each connected into separate pumping units. Two engines may thus be used to drive up to eight pumps in a single trailer.

IPC Classes  ?

• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles
• F15B 1/00 - Installations or systems with accumulatorsSupply reservoir or sump assemblies

Abstract

A pipe pig is provided with linked wheels, and at least a central wheel of the linked wheels is pivotally linked to adjacent wheels through a spring loaded connection that biases the central wheel out of straight line alignment with the adjacent wheels. The pipe pig may be used to negotiate tight bends in a pipe and carry sensing electronics.

IPC Classes  ?

• B08B 9/051 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes the cleaning devices having motors for powering cleaning tools
• F16L 55/28 - Constructional aspects
• F16L 55/32 - Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
• B08B 9/049 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes
• F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
• F16L 55/44 - Constructional aspects of the body expandable
• E03F 7/12 - Installations enabling inspection personnel to drive along sewer canals

Abstract

A pipe pig is provided with linked wheels, and at least a central wheel of the linked wheels is pivotally linked to adjacent wheels through a spring loaded connection that biases the central wheel out of straight line alignment with the adjacent wheels. The pipe pig may be used to negotiate tight bends in a pipe and carry sensing electronics.

IPC Classes  ?

• B08B 9/051 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes the cleaning devices having motors for powering cleaning tools
• F16L 55/28 - Constructional aspects
• F16L 55/32 - Constructional aspects of the propulsion means, e.g. towed by cables being self-contained
• B08B 9/049 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes
• F16L 55/26 - Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
• F16L 55/44 - Constructional aspects of the body expandable
• E03F 7/12 - Installations enabling inspection personnel to drive along sewer canals

Abstract

A pumping unit is provided that controls fluid pressure in a pipe being traversed according to the degree of resistance encountered by a pig traversing the pipe under fluid pressure. Increasing fluid pressure in constricted areas enables an intelligent pig to traverse the pipe with a more uniform speed by controlling the fluid velocity.

IPC Classes  ?

• B08B 9/00 - Cleaning hollow articles by methods or apparatus specially adapted thereto
• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles

Abstract

A pumping unit is provided that allows at least four passes to be made simultaneously with a single pumping unit. A single engine is used to drive two pumps, each connected into separate pumping circuits. Fluid flow in each of the pumping circuits is controlled by respective flow control elements on the pumping circuits, as for example a variable flow valve. Two engines may thus be used to drive four pumps.

IPC Classes  ?

• B08B 9/032 - Cleaning the internal surfacesRemoval of blockages by the mechanical action of a moving fluid, e.g. by flushing
• B08B 9/027 - Cleaning the internal surfacesRemoval of blockages
• B08B 9/04 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes
• B08B 9/043 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
• B08B 9/055 - Cleaning the internal surfacesRemoval of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the cross-section of the pipes, e.g. pigs or moles