Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
  • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
  • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
  • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
  • F04B9/1256—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor with fluid-actuated inlet or outlet valve
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
  • F04B53/14—Pistons, piston-rods or piston-rod connections
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
  • F04B7/02—Piston machines or pumps characterised by having positively-driven valving the valving being fluid-actuated
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
  • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
  • F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
  • F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
  • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
  • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped

Definitions

• the present device for transportation of condense by steam could find application in different technical fields, where transportation of water, water solutions, liquid chemicals or condense have to be transported through pipelines and if steam is available in the site.
• This device could be used with compressed air instead of steam if compressed air is available.
• the most widely used device for transportation is by pushing the liquid by compressed air or steam.
• the liquid to be transported has fulfilled a vessel to a determined level.
• the compressed air or steam acts upon the surface of the liquid with a definite pressure. After the determined volume of liquid is transported the pressure on the surface of the remaining liquid drops down to atmospheric, that allows new liquid to enter the vessel. When the level of the liquid reaches a definite value, compressed air or steam feed the vessel and the cycle is repeated.
• the known device for transportation of condense of "Armstrong” Int. USA and “Spirax Sarco” USA represents a closed vessel with inlet and outlet for the transported condense and inlet and outlet for the compressed air or steam.
• a spring assisted float mechanism is mounted inside the closed vessel. The mechanism is used for automation of the process of feeding and discharging of the liquid and switches two valves-inlet and outlet valve for compressed air or steam.
• the spring assisted float mechanism is designed to operate the outlet valve and the inlet valve simultaneously.
• the outlet valve is opened and the inlet valve is closed.
• the condense enters the vessel gravitationally through a check valve, rises the float and the corresponding air is evacuated through the outlet valve.
• the spring assisted float mechanism reverses the positions of the valves simultaneously.
• the compressed air or steam enters the vessel and the liquid is transported through the outlet check valve into the corresponding pipeline. While the liquid is transported the float lowers its positions until it passes its trip point corresponding to a determined low level of the liquid and the spring assisted float mechanism reverses the positions of the valves simultaneously and the whole cycle is repeated.
• the strength of spring material is dependent of the chemical structure of the liquid. That shortens the exploitation cycle of the devices and raises the cost of transportation of the liquid.
• the spring assisted mechanism works by hits that leads to relatively fast wear and tire of the mechanism.
• a device for transportation of liquids by compressed gas or steam which consists of a vessel in which at least two variable gas volumes V1 , V2 are formed.
• the level of the liquid in the two volumes changes and the switching of the processes of feeding and discharging is made by the created pressure difference between the gas volumes.
• a second volume is formed by providing a cylinder with opened bottom.
• a tube with an inside valve are installed in the cylinder. The movement of valves is sincronized and depends on the position of the cylinder.
• the cylinder is movable between upper and lower position in the closed vessel.
• the cylinder has positive buoyancy in the liquid to be pumped.
• Valve means operated by movement of cylinder is provided to cause gas admitted to the cylinder to displace liquid there from, when the cylinder is in its upper position and to permit gas to escape from the cylinder when the latter is in its lower position.
• This device ensures smooth switching process, but if using steam to power it, the size of the lower volume of the float should be at least one half of the volume of the vessel in order to avoid the steam condensation and device malfunction in the process of pumping. The great size of the float rises the production price of the device
• the present invention has for an object to provide an alternative device for transportation of liquids by steam or compressed air based on the use of pilot switching mechanism.
• the device for transportation of liquids by compressed air or steam (Fig. ) consists of a closed vessel (1 ) with inlet (8) and outlet (9) for the transported liquid; with inlet (6) and outlet (7) for steam for the vessel and inlet (10) for steam for the pilot mechanism .
• a pilot mechanism (2) with two volume float (3) is installed inside the closed vessel (1 ) .
• the first pipeline (11 ) ends inside the bellow of the main valves mechanism.
• the other pipeline (12) ends both inside the lower volume of the float (13) and inside the supporting valve (14) of the pilot mechanism.
• the float is free to move in vertical direction.
• the main valves mechanism (5) consists of an inlet main valve (6), outlet main valve (7), main valves' support (15) with spring (16), main valves' case (17) and main valves' bellow (18).
• the main valves' case is installed on the vessel's cap (19) and the inner volume of the case is connected to the inner volume of the vessel by an opening (20) in the vessel's cap.
• the main inlet valve and the main outlet valve bodies are installed on the upper part of the case in parallel and the main valves' support with spring is installed under the valves' bodies and firmly connected to the flat upper part of the bellow.
• the bellow of the main valves' mechanism is installed in a whole in the vessel's cap.
• the float is designed with two separate volumes.
• the upper volume (4) is closed and the lower volume is with opened bottom and its upper part is connected with the vessel's volume by a tube (24) through the upper volume ending with valve (23).
• the float is equipped with an additional tube (25) connecting the lower part of the lower volume with the vessel's volume passing through the upper volume.
• the tube (12) is bearing inside the tube (24) of the float, allowing vertical movement of the float
• the condense to be transported enters gravitationally the vessel through the inlet check valve (8) and fills simultaneously the vessel and the lover volume of the float and the air or steam inside the cylindrical volume is evacuated through the opened outlet valve (7) until the level reaches the lower opening of the tube (24). Because of the positive buoyancy of the float in the condense to be pumped, the further entering of condense moves the float upwards and because of its vertical movement the lever (22) connected to it lifts the rod (21 ), that starts opening the ball inlet valve (10) and closing the supporting valve (14) of the pilot mechanism simultaneously. The inlet valve transmits steam through the tube (12) both to the still opened supporting valve (14).
• the device for transportation of liquid by steam realizes discharging of the condense and ensures smooth and automatic operation during the whole cycle by the use of pilot mechanism causing synchronized movement of the main valves based on the condense level inside the vessel.
• the lever system of the pilot mechanism is designed connected with ball inlet valve.
• the rod (21 ) lifting the ball is firmly connected with supporting valve (14).
• the rod and the supporting valve are on one and the same axis.
• the lever (22) is bearing both with the rod and the valve (23) in bedded in the float (3), so that to allow the float to open and close the ball inlet valve and respectively to close and open the supporting valve depending on float's position.
• the ball inlet valve (10) of the pilot mechanism is installed on the vessel's cap (19) and the main valves' case (17) is welded to the vessels cap.
• the main valves mechanism (5) is designed with ball inlet main valve (6) and outlet main valve (7) in parallel with the inlet main valve, both connected in their down part to main valves' support (15) with spring (16), that allows only vertical movement of the main valves caused by the expanding /shrinking of the bellow (18) installed in a whole in the vessel's cap 19.
• the float is designed as two volumes cylinder.
• the upper volume (4) is welded and the lower volume is with opened bottom.
• a tube (24) through the upper volume ending with valve (23) and tube (25) connecting the lower part of the lower volume with the vessel's volume passing through the upper volume are welded to both elliptical bottoms of the closed volume (4).
• the proposed device according to the invention for transportation of fluids is provided with universal construction of the pilot mechanism for all output sizes of the device, that makes the device easier to produce and maintain.
• the proposed device ensures possibility for smooth switching, respectively for diminishing the wear-and-tire and prolonging the exploitation of the inlet and outlet valves and at the same time the problem element - the spring float mechanism for operation of top and down level with numerous hinge joints is evaded.
• the proposed device ensures wide range of discharge rates retaining the pilot valve mechanism by changing only the main valves' mechanism and the vessel size;

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Jet Pumps And Other Pumps (AREA)
• Float Valves (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=52741652

Family Applications (1)

Country Status (2)

Family Cites Families (5)

• 2013
  • 2013-09-25 EP EP13894251.1A patent/EP3049678B1/de active Active
  • 2013-09-25 WO PCT/BG2013/000045 patent/WO2015042670A1/en active Application Filing

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