WO2018158616A1

WO2018158616A1 - Valve with sub-valve for minimum-flow control, redirecting and reverse control

Info

Publication number: WO2018158616A1
Application number: PCT/IB2017/051236
Authority: WO
Inventors: Alfonso VALENZUELA ACOSTA
Original assignee: Valenzuela Acosta Alfonso
Priority date: 2017-03-03
Filing date: 2017-03-03
Publication date: 2018-09-07

Abstract

The invention relates to a valve for the redirection and reverse control of flows with a sub-valve for minimum-flow control of liquid fluids for hydraulic and home networks with seven effects, the valve being formed by: a solid prismatic structure with horizontal ducts and vertical ducts that vary in diameter and shape for a specific function, supplemented with a sub-valve for reducing and controlling liquid fluid by means of pressure; a guide and a horizontal sub-valve spring; a sphere and a vertical spring, with an automatic seal based on overpressure of liquids, a manual seal with a plunger and a safety screw, automatic direction for expelling air, a flow seal for preventing passage to measuring equipment, and stoppage of reverse flows and control of the passage of the minimum amount of fluid, called the "vital minimum".

Description

VALVE WITH MINIMUM FLOW, REDIRECTION AND REVERSE CONTROL SUB-VALVE

Technology Sphere

The invention of the present valve belongs to the civil engineering branch, especially with regard to household water supply connections and flow management in water, air or liquid fluid conduction networks for re-addressing and reverse flow control with sub - minimum fluid flow control valve.

State of the Art

The use of suction cups to expel air from fluid conduction networks and avoid high pressures within the networks is currently known. On the other hand, the non-return valves are also known, also called single-flow valves or "check" valves that are intended to completely close the passage of circulating fluid, either gaseous fluid or liquid in one direction and free it in the direction contrary. Regarding this background, multiple devices have been created that provide a different solution to the problems of pressure and fluid withdrawal, whether gaseous or liquid, but there is no solution for gas redirection, reverse flow control, selective flow of liquids automatic way, closing of flow of manual form, expulsion of air and protection of equipment of measurement of liquids by wear when they measure gases and no liquids.

A solution close to the redirection and flow control of the present invention is the Colombian patent with certificate Number 29950 "Valve for redirection and reverse flow control" whose inventor is the same applicant for the present invention Alfonso Valenzuela Acosta, which proposes a solution for six operations in a single mechanism with re-addressing and reverse flow control, whose function is to prevent the passage of air to the measuring equipment that present inconsistencies in the reading of the water flow automatically, since the equipment Flow measurement does not distinguish between water volume and air volume when counting, mainly in household aqueducts. The new invention is a valve with sub-valve that performs seven operations in a single mechanism, which in addition to a seal so that the air does not pass, re-directs the air and controls the reverse flows that have already passed through the interior of the mechanism for that do not return to the main network, has manual closing of the flow for protection of the equipment of liquid measurement, has opening and automatic closing; It has particularly as a solution to the control of minimum flow of liquid fluids a sub-valve element in a duct of its structure, which regulates the so-called "vital minimum" of water consumption for a home service. In addition to the existing solutions for flow control, the new valve with sub-valve reduces the flow rate to restrict the normal passage of drinking water in the household connections at the time that the service operator requires, thus allowing only the passage of flow calculated for different purposes and guarantee the "vital minimum" of consumption for a human being.

This solution, not satisfied in the state of the art, guarantees a minimum of water flow called "minimum vital" by configuring a solid structure for operating conditions in household aqueducts, delivering an average of 1,000 liters / hour up to 1 .300 liters / hour, with a maximum pressure of 500kPa up to 700 kPa in 12.7mm (1/2 ") pipe. However, the passage or delivery of the water flow through the sub-valve of the minimum flow can be modified by reforming the physical properties a helical compression compression spring, on the in-line pressure of the connection according to its conditions with the operation of the lateral axial movement sub-valve, from left to right and from right to left.

Detailed description of the invention

The valve for re-addressing and reverse flow control with a sub-valve for controlling the minimum flows of liquid fluids has seven effects in a mechanism consisting of a solid structural box with six threaded holes, where each of the holes determines a specific feature within manufacturing and internal function for the management of gas and liquid flows.

The solid structural box has internal ducts that begin or end in each of the six perforations, where each duct varies its diameter and level in its tour to fulfill a function. In the terminal part of the path there is a sphere with a spring that is activated by pressure to allow the passage of liquid, a sphere that when it does not receive liquid pressure is at a lower level controlling the reverse flow. Similarly, the sphere when in its lower level position is a blockage for the passage of air that is expelled by the air ejection duct from the upper part and which can be complemented with a known suction cup.

In the intermediate part of the path is a sub-valve that slides horizontally over a guide and a stop, accompanied by a spring that is compressed to ensure the flow into the sub-valve according to the pressure exerted by the liquid flow .

Brief Description of Figures

Figure 1: Shows the valve for re-addressing and reverse flow control with the sphere blocking the air passage and the sub-valve reducing the air flow.

Figure 2: Shows the valve for re-addressing and reverse flow control with the sphere allowing the passage of restricted liquid to a minimum that the internal duct of the sub-valve controls.

Figure 3: Shows the valve in a perspective cut-off of the valve for redirection and reverse flow control with the sub-valve on its travel stop guide and its components.

Figure 4: It shows the sub-valve in a longitudinal section where the flow reducing duct, the stop and the upper rectangular mouth of liquid are appreciated.

Figure 5: Shows the sub-valve in a frontal plane with the slide stop.

Figure 6: Shows the sub-valve in its top view where the upper liquid outlet mouth is observed reduced to the minimum of fluid.

The sub-valve (23) called the "minimum vital" is an additional support element within the solid structure (12) of a main valve for redirection and reverse flow control. This sub-valve (23) has an axially associated helical compression spring (24), which serves as a flow reducer to restrict the normal passage of drinking water in the household connections at the time that the service operator requires, allowing thus, only one step of the calculated flow. For example, with the sub-valve (23) it is possible to regulate the passage of the maximum water flow of 200 +/- 20 liters in 24 hours; or 6,000 +/- 600 cubic liters in 30 days. -13. This step is obtained under normal operating conditions of the home aqueduct system, with an average of 1,200 +/- 100 liters per hour, with a maximum pressure of 600 kPa in pipes of 1, 27cm in diameter (1/2 ") However, the passage of the water flow through the sub-valve (23) is modified by reforming the physical properties of the helical compression compression spring (24), on the in-line pressure of the connection. lateral axial movement, from left to right and from right to left.

The sub-valve (23) has a cylindrical shape with a limit stop (25) that allows the flow of liquid and prevents the total closing of the flow of liquid. This sub-valve (23) works with assisted axial movement through a helical auxiliary compression spring (24) in stainless steel located in the protuberance (29). This helical auxiliary spring (23) is compressed at higher line pressure a maximum of 600 kPa and gradually expands or returns to its original state at lower line pressure of about 400 kPa or less kPa; where the expansion and compression of the helical auxiliary spring (23) generates a lateral axial movement of the sub-valve (23) from left to right and vice versa on a guide (26) of the left lateral lower duct (4) of the solid body (12 ) of the main valve.

The sub-valve (23) has a flow reducing duct (28) half its length and an upper rectangular mouth (27) of restricted flow of liquid. The upper rectangular mouth (27) of restricted flow of liquid through which the flow flows restricts the flow of the liquid flow when the axial spring (24) is compressed and increases the flow of the liquid flow when the axial spring (24) expands or return to its original state; that is to say that it has an inverse relationship between the in-line pressure and the flow rate: the higher the line pressure, the lower the flow rate and the lower the line pressure the greater the flow rate; where the stop (25) confers the maximum flow allowed by the mouth (27) fully open when the sub-valve (23) slides to the stop (25), and the axial spring (24) confers the minimum allowed flow through the mouth (27) when the sub-valve (23) slides to the limit allowed by the axial spring pressure (24) that partially closes the mouth (27) with the walls of the lower horizontal duct (4). In accordance with Figure 1 and Figure 2, the solid structural box (12) is observed, which on its right side has a flow inlet connection (1) and on its opposite side the liquid outlet (7) for connection to a conventional flow measurement equipment. Similarly, the cover (6) of the lower horizontal passage duct (4) that supports the pressure of an auxiliary helical compression spring (24), the sub-valve (23) and its helical auxiliary compression spring (24) ) axially associated, the manual sealing mechanism (1 1) of the second vertical seal duct (18) and the connection of a conventional suction cup (13) that is connected to the air outlet of the first vertical duct (14) in its portion higher.

Figure 2 is a section of the solid structural box (12) showing the internal wall (5), the perforations, ducts and characteristic accessories for the execution of the valve. In the final part of the valve ducts is an internal seal sphere (8) with its internal seal spring (9) that is automatically activated by liquid pressure (16) and not by air pressure (17). The lower horizontal passage duct (4) is at a lower level than the upper horizontal inlet duct (15) and at a lower level than the upper horizontal outlet duct (10) and between both levels the sphere (8) is housed when it is made the stamp. It is observed that the lower horizontal passage duct (4) is a portion of the path where liquid (16) and air (17) are driven through the upper horizontal inlet duct (15); where the lower horizontal passage duct (4) houses the sub-valve (23) and allows its movement from left to right and vice versa on a guide (26). It is also observed that the liquid (16) represented by the dark continuous arrows flows in only one direction, while the air (17) represented by the dotted dates flows in two directions as seen in Figure 1. The air (17) returns through the lower horizontal passage duct (4) through the upper rectangular mouth (27) and through the flow reducing duct (28) ends its path in the first vertical air discharge duct (14) in its upper portion to be expelled by a conventional suction cup (13) into the atmosphere.

On the other hand, the liquid (16) that enters along with the air (17) in the upper horizontal inlet duct (15) follows its path through the lower horizontal passage duct (4), enters the flow reducing duct ( 28) half the length of the sub-valve (23) and continues its journey through the upper rectangular mouth (27) of restricted flow of liquid to push the seal sphere (8) and pass to the upper horizontal outlet duct (10) as shown in Figure 2, where the liquid outlet (7) is connected to the conventional flow measurement equipment. The second vertical duct (18) has the manual seal mechanism (1 1) to interrupt the flow of fluids when required within the hydraulic network. The manual seal mechanism (1 1) consists of a safety screw (2), a plunger (3), a guide (5) to slide the plunger (3) and some gaskets (19) that seal the space between the internal walls of the manual seal mechanism (1 1) and the plunger (3).

For the manufacture of the valve for re-addressing and reverse flow control, the prismatic solid structure (12) is taken and the perforations are made to create the five ducts with their characteristic shapes, creating three horizontal ducts and two vertical ducts that vary their diameter and shape for a specific function. The internal ducts of the valve are: an upper horizontal inlet duct (15), an upper horizontal outlet duct (10), a lower horizontal duct (4) with a guide (26), a first vertical duct (14 ) air expulsion and second vertical seal pipe (18).

For the description, the valve for re-addressing and reverse flow control will take a flow from left to right of the plane as shown in figure 1 and figure and in figure 2. The inlet of liquid flows (16) and inlet of Air (17) begins on the right side of the valve, where the flows enter through the upper horizontal inlet duct (15) which is a perforation that runs one third of the solid structural box (12) from left to right. In the present description, the upper horizontal inlet duct (15) is located in the upper half of the solid structural box (12) and ends when it meets the first vertical duct (14).

The first vertical duct (14) is perpendicular to the upper horizontal inlet duct (15) and ends its path upwards in the air expulsion connection (22) of a conventional suction cup (13) and down with the lower horizontal duct of Step 4) passing through the sub-valve (23) and compressing the axial helical compression spring (24) axially associated to restrict the flow rate.

The lower horizontal passage duct (4) is located in the lower half of the solid structural box (12), that is below the level of the upper horizontal inlet duct (15) and below the level an upper horizontal outlet duct ( 10), taking into account that the upper horizontal inlet duct (15) is at the same level as the upper horizontal outlet duct (10), but above the level of the lower horizontal passage duct (4).

The lower horizontal passage duct (4) is perpendicular to the first vertical duct (14) and begins with the termination of the first vertical duct (14). The lower horizontal passage duct (4) runs two thirds of the solid structural box (12) and ends with the lid (6). In the middle part of the lower horizontal passage duct (4), perpendicularly is the second vertical seal duct (18), which ends its path upwards with the connection of the manual seal mechanism (1 1) and in its intermediate perpendicularly it is connected to the upper horizontal outlet duct (10), a duct through which only liquid passes to a flow measurement device. Because the valve supports flow pressures of liquids and gases, it is constructed by vertical and horizontal perforations in the solid structural box (12), so that each of the five ducts is constructed with a perforation at a certain depth as observed in figure 1, figure 2, and figure 3 presenting cross-sectional views showing the ducts.

It is observed that the upper horizontal inlet duct (15) maintains the same diameter in its path, in the same way as the lower horizontal duct (4). On the other hand, the first vertical duct (14) has a larger diameter portion in its upper part for the expulsion of air and threaded connection of a conventional suction cup, and has a smaller diameter portion in the lower part where it is connected with the lower horizontal passage duct (4). The second seal duct (18) has a larger diameter portion in its upper part that houses the seal spring (9) and the seal sphere (8), and in its lower part has a smaller diameter portion which is a stop for the seal sphere (8) that is housed there. It is observed that the second seal pipe (18) It changes diameter in a countersunk ring path (20) that houses the sphere (8) and performs the seal when there is no liquid pressure. The upper horizontal outlet duct (10) also changes in diameter in a countersunk termination (21) of a ring of smaller diameter that prevents the sphere (8) from coming out and contributing to the formation of the ring path (20) countersinking of the second seal pipe (18).

The seven effects of the valve for redirection and reverse flow control are presented below: When the invention is executed, the valve for redirection and reverse flow control manually executes the first effect:

one . Closing the flow of flows with the piston (3) that is executed when the safety screw (2) is screwed so that the piston (3) slides through the guide (5) and pushes the seal sphere (8) to its sealing position on the ring path (20).

When the invention is executed automatically, six effects are executed:

2. Air routing (17) to the conventional air exhaust valve or suction cup (13).

3. Seal so that the air flows (17) do not pass the flow measurement equipment through the plugging valve so that the air does not escape.

4. Stop the reverse flows when the sphere (8) is at a lower level of the upper horizontal outlet duct (10).

5. Prevents air (17) from entering the hydraulic ducts so that the hydraulic network does not collapse

6. Protection of measuring equipment due to deterioration, because they have air whose speed is twenty-nine times greater than that of water.

7. Control and flow reducer to restrict the passage of drinking water in the

household connections to guarantee the minimum or "minimum vital" flow with the sub-valve (23)

The valve for re-addressing and reverse control of seven-effect flows releases a high flow of air while the pipeline is filling, thus preventing the passage of air through the measuring equipment. In conditions of negative pressures, that is to say, in vacuum the valve opens introducing atmospheric air to the minimum depression in the network In this way, it avoids crushing damage and when the liquid passes to the measuring equipment, automatic closing is carried out for reverse flows. The valve for re-routing and reverse flow control must be installed in a horizontal hydraulic conduction network as shown in figure 2 because it is its technical form for the correct operation of expulsion and air access, in addition to the upper horizontal inlet duct (15) must be at the same level of the upper horizontal outlet duct (10) and above the level of the lower horizontal passage duct (4) for the sphere (8) to automatically seal.

When the fluids have crossed the upper horizontal inlet duct (15) they pass to the first vertical duct (14) of air expulsion (17) the fluids continue the journey to the lower horizontal duct of passage (4), at the end of the Lower horizontal passage duct (4) the fluids find the sub-valve (23) and in the upper part the seal sphere (8) pressed by the seal spring (9). The air (17) is expelled by the first vertical duct (14) as shown in Figure 2 by means of a connection of a conventional suction cup (13). When the conventional suction cup (13) presses on liquid flow pressure (16), the new valve for redirection and reverse flow control opens the passage of the seal sphere (8), retracts the seal spring (9) and leaves pass the liquid fluid (16) to the upper horizontal outlet duct (10) as shown in Figure 2.

With the configuration of the spring (9) and the seal sphere (8) in the second vertical seal duct (18), the pressure between 0.5000 kg / m2 to 0.650 kg / m2 necessary to close is created and when the liquid (16) has passed to the upper horizontal outlet duct (10), the seal sphere (8) is at a lower level below the upper horizontal outlet duct (10), that is to say that the liquid overpressure (16) it stops, the flow liquid is returned and the seal sphere (8) lowers again to close and prevent the reverse flow.

Claims

one . Valve for re-addressing and reverse flow control for hydraulic and home networks with seven-effect minimum fluid flow control sub-valve CHARACTERIZED by a solid prismatic structure (12) with an upper horizontal inlet duct (15), a upper horizontal outlet duct (10), a lower horizontal passageway (4) with guide (26) located below the upper horizontal inlet duct (15) and below the upper horizontal outlet duct (10) with a seal sphere (8) that is housed between both levels; a first vertical air duct (14) and second vertical seal duct (18) with a manual seal mechanism (1 1); a spring (9), a seal sphere (8), a sub-valve (23) with its flow reducing duct (28) located in the lower horizontal passage duct (4), a stop (25), a mouth upper rectangular (27) and helical compression compression spring (24) axially associated to restrict the flow rate.

2. Valve for re-addressing and reverse flow control with minimum fluid flow control sub-valve according to claim 1 CHARACTERIZED because each of the ducts has a termination for connection or seal, where the upper horizontal duct of input (15) has a connection to input (1); the upper horizontal outlet duct (10) has a connection to a conventional measuring device; the first vertical air discharge duct (14) has connection (20) to a conventional suction cup; the second vertical seal duct (18) has a connection with a manual seal mechanism (1 1); and the lower horizontal passage duct (4) has a guide (26) that houses the stop (25) of the sub-valve (23) and has a cover (6) that supports the pressure of an auxiliary helical compression spring ( 24).

3. Valve for re-addressing and reverse flow control with minimum fluid flow control sub-valve according to claim 1 characterized in that the sub-valve (23) is cylindrical and has a flow reducing duct (28) half its length and an upper rectangular mouth (27) of restricted flow of liquid; where the upper rectangular mouth (27) of restricted flow of liquid restricts the flow of liquid flow when the spring axial (24) compresses and increases the flow rate of the liquid when the axial spring (24) expands or returns to its original state.

4. Valve for re-addressing and reverse flow control with minimum fluid flow control sub-valve according to claim 1 characterized in that the sub-valve (23) slides from left to right and vice versa on the guide ( 26) with its sliding stops delimited by the axial spring (24) and the stop (25); where the sliding to the stop (25) confers the maximum flow allowed by the mouth (27) fully open, and the sliding allowed by the pressure of the axial spring (24) confers the minimum flow allowed by the mouth (27) partially closed through the walls of the lower horizontal duct (4).

5. Valve for re-addressing and reverse flow control according to claim 1 characterized in that the helical auxiliary spring (24) is located between the protuberance (29) of the sub-valve (23) and the cover (6), and said helical auxiliary spring (24) is compressed at higher line pressure a maximum of 600 kPa and gradually expands or returns to its original state at lower line pressure at less than 400 kPa.