EP1945977A2

EP1945977A2 - Variable pressure drop and/or closing and sealing devices with internal cartridge and mobile tube

Info

Publication number: EP1945977A2
Application number: EP06831037A
Authority: EP
Inventors: Michel Emin
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-10-28
Filing date: 2006-10-27
Publication date: 2008-07-23
Also published as: RU2008121258A; US20080224075A1; RU2440529C2; FR2892791A1; WO2007048942A2; WO2007048942A3

Abstract

The invention concerns a device for pressure drop, and/or closing and sealing a fluid circuit with internal cartridge (3a), (3b), (3c), (3d), (3e) or (3f) and mobile tube (5). The inventive device enable a variable singular pressure drop to be produced on a pipe but also enables, optionally, said pipe which may have a large diameter to be closed and sealed, at high pressure and at high temperature. In fact, the invention, enables, through the displacement of a mobile tube (5), the openings (6a) of (6b) for circulating the fluid conveyed in the pipe to be more or less closed. Said mobile tube (5) may optionally create an autoclave sealing on the closure seat (4) at end of travel. The torque required for maneuvering the device is very low throughout travel. The installation and the maintenance are simplified by using a removable cartridge (3a), (3b), (3c), (3d), (3e) or (3f) immersed in the fluid containing almost all the members required for operating the device. It operates on all types of fluids.

Description

DEVICES FOR LOSS OF VARIABLE LOAD AND / OR CLOSURE AND TENANCY WITH INTERNAL CARTRIDGE AND

MOBILE TUBE

₅ DESCRIPTION

Field of the invention

The present invention describes a device for variable pressure loss and / or

^ ₀ closure and sealing seat can be used on circuits carrying gaseous or liquid fluids. Its purpose is to create a variable singular pressure loss on the pipe according to the displacement of a movable tube (5), very low at the beginning of the race and very important at the end of the race, or even an autoclave sealing. And this requires only a very low _d5 maneuvering power.

The device applies to all functions that can be fulfilled by all types of existing valves or faucets.

The device is intended to replace the existing valves or valves currently, decreasing the powers necessary for their operation and _Q 2 flow improvers fluide._

State of the prior art and problem

The valves or existing fill valves is a function of flow control ₂₅ is a function of closing and sealing. No device can fulfill both functions. Four major technological principles exist:

The seat valves consist of the advance of a cover against a seat, the parallel-seat valves constituted by two covers sliding " _Q perpendicular to the fluid vein to rest on the seats at the end of the race, the taps to turn spherical or cylindrical where the closure is constituted by the rotation of the pierced core, and the butterfly valves. The seat valves have the advantage of being able to seal very high pressures and high temperatures. On the other hand, in this type of valve, the fluid must pass through the seat. The rod holding the lid comes to rest on the seat, the fluid flow follows either a Z-shaped path or a 90 ° angle. This induces a disturbance of the flow and a loss of charge. Parallel seating valves allow less disturbed fluid flow. But their design does not allow regulation. The flow is very disturbed during closure, their mechanism is complicated and it encloses a quantity of fluid between the two covers which in case of depressurization can at best prevent the valve from opening. In addition, the friction of the covers on the seats during the maneuvers scratches the seats and damages the valve.

Full-flow valves are generally ball valves or cylindrical valves. These faucets reconstitute the fluid vein integrally but have two disadvantages. The first of these drawbacks is the difficulty of being able to perfectly seal the valve between upstream and downstream because the sealing surfaces rub against each other during maneuvers and are scratched, which makes the realization of these faucets in high pressure and high temperature impossible. The second disadvantage is the high torque required for the operation of the valve because of the significant friction of the sealing surfaces, making it difficult to produce these valves in large diameter and very difficult the control function. In addition, they generally have a retention zone. Butterfly valves can be used as regulators but are not very tight. In addition, the pressure drop is generated by the simple reduction of the fluid passage section and not by devices for varying the path of the fluid. Output speeds are therefore very important. They cause a disturbance of the fluid vein and are subject to oscillations.

The problem posed by the valves and valves currently used is that none of the existing embodiments combine a regulating function and a closing and sealing function. In addition, regulatory ranges are often limited.

Summary of the invention

The device according to the invention consists in producing a control valve generating a very low pressure drop at full opening and very important at the end of the stroke, or even an autoclave seal on seat for good sealing at high pressure and at high temperature. keeping a very low maneuvering torque.

To do this, a support (2a), (2b), (2c), (2d), (2e) or (2f) on which a cartridge (3a), (3b), (3c) is placed on a pipe is placed on a pipe. ), (3d), (3e) or (3f) containing almost all the organs necessary for the operation of the device. The fluid passes through openings (6a) or (6b) through a portion of the cartridge (3a), (3b), (3c), (3d), (3e) or (3f). A movable tube (5) closes more or less these openings (6a) or (6b) according to the desired pressure drop. Additional pressure drop devices can complete the openings (6a) or (6b) and adapt the device to the different flows. A sealing seat is possibly placed at the end of the race.

The use of a movable tube (5) as a cap decreases the masses to move and the pressure forces and therefore the energy to implement to maneuver the device.

Advantages

The device makes it possible to realize control and closing valves whatever the pressure and the temperature and this with a very small loss of load in completely open position. The mobile regulating member (5) and closing can be light, which is particularly advantageous for large diameters. It allows to choose the autoclave support force by adjusting the position of the contact between the seat (4) and the movable tube (5). The low weight of the moving parts as well as the adjustment of the autoclave force generate a very low maneuvering torque, therefore small engines.

Thanks to this, the realization of valves operated by autonomous generator is possible. Indeed, the low power required for the maneuver can be generated from the fluid or from the external environment, stored and then used by an actuator that can be controlled remotely by a transmitter. This represents for example a great advantage for the application on oil pipelines for which the application of the device according to the invention makes it possible to eliminate the wiring for the supply, sometimes sometimes several hundred kilometers long. List of Figures

The device which is the subject of the invention will be better understood on reading hereinafter, followed by several figures respectively representing:

Figure 1 describes the application of the preferred device according to the invention shown in section, in the so-called "closed" position, that is to say when the device blocks the passage of the fluid.

FIG. 2 represents a variant of the device according to the invention without a pressure drop device, in the so-called "open" position, that is to say when the device leaves free the passage of the fluid and generating thereon a minimum pressure drop.

FIG. 3 represents a variant of the device according to the invention, using a support (2c) of reduced size, a hydraulic drive device (19) and (22) and openings (6b) of cylindrical shape.

Figure 4 shows a variant of the device according to the invention, using a support (2d) permanently attached to the pipe (1) and an autonomous drive device (21) and (23) and radio-controlled (24).

Figures 5a and 5b show enlarged views of Figure 1 and provide a better understanding of the role of the stops (26).

FIG. 6 represents a variant of the device according to the invention, using a support (2e) placed in such a way as to carry the cartridge (3e) in a balanced manner and not in cantilever fashion.

FIG. 7 represents a left-side view of the support (2e) used in FIG. 6.

FIG. 8 represents a variant of the device according to the invention, using a support (2f) placed in such a way as to carry the cartridge (3f) in a balanced manner and not in cantilever fashion. The tube (5) is external to the cartridge (3f).

FIG. 9 represents a cutaway left view of the support (2f) used in FIG.

FIG. 10 is an exploded example of a pressure drop device composed of a perforated support (7) and plates (33), (34), (35), (36) and (37).

Figure 11 shows, exploded, another example of pressure loss device composed of balls (39). Detailed description of the use of the process according to the invention

Figure 1 describes the preferred application according to the invention in the closed position, that is to say blocking the passage of the fluid. The invention consists of a device for achieving a variable singular pressure drop and / or closing and sealing between two parts of a fluid circuit. The invention is installed on a pipe (1). It consists of a body (2a), here detachably fixed on the pipe (1), carrying, here cantilevered, an inner cartridge (3a). Fixing is done by screws (11).

This cartridge (3a) is for example closed by a cover (25) which allows maintenance operations inside the cartridge (3a). Openings (6a) are made through the cartridge (3a), within which the fluid passes. These openings are, for example, supplemented with pressure drop devices composed of a support (7) to which the plates (33), (34), (35), (36) and (37) are attached. By passing through this device for loss of charge, the fluid loses energy. Figure 10 shows in detail this pressure loss device. The pressure drop device, in Figure 1, is for example fixed by screws (13) on the cartridge (3a). The different plates (33), (34), (35), (36) and (37) can be mounted and disassembled without complete disassembly of the valve. These plates can be adapted to a particular flow (nature of the fluid, flow, pressure, etc.). The sliding tube (5), when it slides, more or less closes the openings (6a) and therefore the pressure drop devices (7), thereby varying the singular pressure drop that the device creates on the flow. The shape of the openings (6a) can also be adapted to different applications. When the movable tube (5) reaches the end of the stroke, it is in contact with a seat (4) fixed for the example on the support (2a) by screws (12). This contact creates a seal between the upstream and downstream of the device. Stops (26) limit the deformation of the contact between the seat (4) and the tube (5). Figures 5a and 5b show in detail the role of the stops (26). The seal thus created is autoclave, that is to say that the upstream pressure applies a force on the tube (5) going in the direction of closure. This force can be chosen by the ratio of the surfaces of the tube (5) and its axis (18) subjected to the upstream and downstream pressure forces. The tube (5) is pushed by an axis (18) guided by a guide (15). and sealed by a seal (14).

The drive device of the shaft (18) is for example a connecting rod system (9a) and (9b) - crank (8), pushed by an actuator (10).

This driving device has the advantage of being independent of the positioning variations between the cartridge (3a) and the support (2a) due for example to the thermal expansion, to the pressure forces or to the weight of the cartridge (3a). .

When the actuator (10) is uncoupled from the crank system, all of the cartridge (3a) and all the parts that it carries, disassemble in one block after removal of the screws (11).

Figure 2 shows a variant of the preferred application according to the invention in the open position, that is to say generating a minimal pressure drop on the flow. The openings (6a) are in the preferred application according to the invention and for the example of rectangular shape, bare, and the displacement of the moving tube

(5) varies the pressure drop generated on the fluid as it passes through the openings (6a).

The drive device of the tube (5) and its axis (18) is a rack (17) driven by a pinion (16) coupled to an actuator (29).

A lateral opening flange (30) completes the support (2b) and allows access to the inside of the pipe (1) and the device according to the invention without total disassembly of the latter.

The cartridge (3b) does not have a closure cap.

Figure 3 shows a variant of the application according to the invention in the open position.

The support (2c) is here of very small size and the cartridge (3c) is internal to the pipe (1). The drive device of the tube (5) and its axis (18) is a jack (19) controlled by an actuator (22). The control fluid is conveyed in hoses (20), making the position of the cartridge (3c) independent with respect to the pipe (1).

The openings (6b) are, for the example, of cylindrical shape.

Figure 4 shows a variant of the application according to the invention in the open position.

The support (2d) is permanently fixed to the pipe (1). This support (2d) is of reduced size and is internal to the pipe (1). It supports the cartridge (3d) which carries an autonomous energy generation device consisting of a turbine (21) and a storage and actuating device (23). The device may be radio-controlled by the radiotransmitter (24).

The drilled supports (7) of the pressure drop devices are smaller than the openings (6a). This allows, in the open position, to generate only minimal pressure losses on the flow. When the tube (5) slides and begins to cover the pierced brackets (7), the pressure drop increases more rapidly. This arrangement therefore makes it possible to create only a slight loss of pressure in full opening and then greater from a certain stroke of the tube (5).

FIGS. 5a and 5b show enlarged views of the pressure drop and closure members of the device according to FIG. 1. The plates (33), (34), (35), (36) and (37) are not here represented.

These figures make it possible to better understand the operation of the stops (26), which limit the deformation of the cylindrical contact between the seat (4) and the tube (5). Indeed, the contact between the tube (5) and the seat (4) is on a weak surface and one or the other of the tube (5) or the seat (4) is made of a relatively soft material. In Figure 5b, for the example, it is the tube (5) which is made of a relatively soft material and which is deformed. There is significant deformation on the contact surface that may be damaged. This deformation is nevertheless desirable to ensure a good seal.

The stops (26), made of a relatively hard material, do not deform almost and therefore set the maximum value of the deformation of the tube (5), limiting the movement of the tube (5) relative to the seat (4).

Figure 6 shows a variant of the application according to the invention in the open position.

The support (2e) carries the cartridge (3e) in a balanced manner and no longer cantilever as in the previous figures.

The actuator (10) pushes a toothed piece (27) which drives the tube (5) in translation through a rack (28). Figure 7 shows a left view cut off the support (2e) shown in Figure 6. Sectors are cut so as to let the fluid.

Figure 8 shows a variant of the application according to the invention in the open position.

The support (2f) carries the cartridge (3f) in a balanced manner and no longer cantilever as in the previous figures.

The tube (5) is external to the cartridge (3f). The support (2f) is solid and the fluid passes inside the cartridge (3f), through the openings (31),

(32) then (6b).

FIG. 9 is a left-side view of the support (2f) shown in FIG. 8. This support (2f) is solid so as to force the passage of the fluid through the openings (31), (32) and then (6b).

FIG. 10 shows in detail an example of a pressure drop device composed of a pierced support (7) as well as grooved or pierced grids (33), (34), (35), (36) and (37), for example the number of 5. The fluid path is represented by the thick arrow line.

The pressure drop is created by passing through the grooves and holes of the support (7) and grids (33), (34), (35), (36) and (37). The variation of the pressure drop coefficient of the application according to the invention is obtained by the closure by the tube (5) of a variable number of holes on the pierced support (7).

The pressure drop device is also adaptable to a given flow (nature of the fluid, flow rate, pressure, etc.) by the modulation, out of operation, of the number and positioning of the holes and branches on the support (7) and the grids (33) (34) (35) (36) and (37) _^ by varying the number and order of the gates, and finally the variation of the general shape and nature of the grids and support (7). The number of pressure drop devices can also be modulated since one or more pressure drop devices can simply be removed or replaced by a solid plate. This makes it possible, for example, to linearize the pressure drop as a function of the displacement of the tube (5).

The regulation position corresponds to the positioning of the tube (5) opposite the support (7). To allow the variation of the pressure drop in the open position (out of regulation), the support (7) and the grids (33), (34), (35), (36) and (37) can be replaced by elements of different sizes having the same function. This makes it possible to adapt the minimum pressure drop when the device is in the open position. In FIG. 10, for the example, the support (7) and the grids (33), (34), (35), (36) and (37) are smaller than the opening (6a) of the cartridge (3a).

This arrangement allows a regulation between zero and one hundred percent of the flow. The assembly and disassembly of these pressure drop devices are done out of operation and independently of each other, but without complete disassembly of the cartridge (3a). Indeed, when the tube (5) is in the open position, the support (7) can be easily disassembled by removing the screws (13).

FIG. 11 shows in detail another example of a pressure drop device composed of a pierced support (7) on which is fixed a box (38) filled with balls (39) and closed by a perforated plate (40), fluid, passing through the balls (39) as represented by the thick arrow line, loses energy. The diameter of the balls (39) and the dimensions of the box (38) can be modulated so as to vary the pressure drop generated on the fluid, to adapt the device to a given flow (nature of the fluid, flow, pressure , etc.) and optionally to linearize the pressure drop as a function of the displacement of the tube (5).

Claims

1. Device for creating a variable singular loss of pressure on a pipe (1) carrying a fluid, or to ensure sealing between the upstream and downstream of this pipe, or both, comprising in particular:

one or more fixed parts (2a), (2b), (2c), (2d), (2e), (2f) or (30), designated in their support assembly;

one or more removable parts (3a), (3b), (3c), (3d), (3e), (3f) or (25), designated in their cartridge assembly; - A movable tube (5) internal or external to the cartridge, carried by the cartridge; characterized in that the cartridge, fixed and carried by the support, itself connected to the pipe (1), is internal to the pipe, and in that the cartridge guides the fluid in particular through holes (6a) or (6b ) made in the cartridge, closable by the movable tube (5), and characterized in that the cartridge can be disassembled and removed in one piece.

2. Device according to claim 1, characterized in that the tube is moved by a drive device independent of the positioning variations between the cartridge and the support induced in particular by thermal expansion or pressure forces.

3. Device according to claim 1, and optionally 2, characterized in that the drive device of the movable tube (5) is fixed on the cartridge.

4. Device according to claim 1, and optionally 2 or 3, characterized in that the support or supports to the cartridge are removable relative to the pipe (1).

5. Device according to claim 1, and optionally 2, 3 or 4, characterized in that the support or supports to the cartridge are permanently attached to the pipe (1).

6. Device according to claim 1, and optionally 2, 3, 4 or 5, characterized in that all or part of the passage holes (6a) or (6b) of the fluid in the cartridge are completed with devices for loss of charge ; which complete or partial the holes of passage (6a) or (6b).

7. Device according to claims 1 and 6, and optionally 2, 3, 4 or 5, characterized in that the or loss of pressure devices completing the passage holes (6a) or (6b) of the fluid in the cartridge can be mounted and disassembled without disassembly of the cartridge relative to the support.

8. Device according to claims 1 and 6, and optionally 2, 3, 4, 5 or 7, characterized in that the pressure drop that engenders the device on the fluid is variable by the variation of the shape, the number , dimensions or nature of the pressure drop devices completing the passage holes (6a) or (6b) of the fluid in the cartridge.

9. Device according to claims 1 and 6, and optionally 2, 3, 4, 5, 7 or 8, characterized in that the pressure drop that engenders the device on the fluid is created mainly by the passage of fluid to through a stack of perforated plates, each plate constituting part of the path that the fluid must perform, and characterized in that the pressure drop is modified by modifying the path of the fluid obtained by varying the order, the number or the forms openings of the different plates that make up the stack

10.A device according to claims 1 and 6, and optionally 2, 3, 4, 5, 7 or 8, characterized in that the pressure drop that the device generates on the fluid is created mainly by the passage of fluid to through a box containing elements which may be of various sizes or geometrical shapes, for example balls, each element constituting an obstacle which the fluid must circumvent, and characterized in that the pressure drop is modified by the modification of the path of the fluid obtained by varying the size, number or shape of the elements.

11. Device according to claim 1, and optionally 2, 3, 4, 5, 6, 7, 8, 9 or 10, characterized in that the device comprises a sealing seat (4).

12.Dispositif according to claims 1 and 11, and optionally 2, 3, 4, 5, 6, 7, 8, 9 or 10, characterized in that the movable tube (5) serves as a regulating and sealing member between the upstream and downstream of the device when in contact with the sealing seat (4).

13. Device according to claims 1, 11 and 12, and optionally 2, 3, 4, 5, 6, 7, 8, 9 or 10, characterized in that stops (26) limit the deformation of the contact between the tube mobile (5) and the sealing seat (4).

14.Disρositif, according to claims 1, 11 and 12, and optionally 2, 3, 4, 5, 6, 7, 8, 9, 10 or 13, characterized in that the closing force of the device is variable, by the varying the position of the contact between the sealing seat (4) and the movable tube (5),

15. Device according to claim I ₄ and optionally 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, characterized in that the axis of the cartridge is collinear to the axis of the pipe (1).

16.Dispositif according to claim 1, and optionally 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, characterized in that the cartridge is fixed on the support cantilevered.

17.Dispositif, according to claim 1, and optionally 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16 characterized in that the cartridge is fixed on the support in a balanced way.