ES1075239U - Relief flow regulator. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Relief flow regulator to establish relief openings (2) in tanks/rain treatment tanks (d) that are arranged transversely occupying the width of said tank/pond, characterized said relief flow regulator (1) because in each relief opening is provided with a regulating device (3) with: - a fixed lower portion (30) with a front surface (300), forming an inclined plane with respect to the water level (na) in the reservoir that extends through the entire width of the relief opening and which determines a level lower (h) of said relief opening; y - an upper portion (31) in the form of a plate intended to be bent and arranged inclined upstream of said fixed lower portion and having a fixed upper end (310) and a lower end (311) that is operatively facing the front surface (300) of the fixed lower portion, so that between said front surface (300) and said lower end (311) a relief slot (4) is determined for a relief flow (qa) and whose relief slot varies its amplitude (40) as a function of the level of the water in front of the relief opening due to the bending experienced by said portion or upper plate (31) when the water level increases above the lower level (h) established by said lower portion (30) (Machine-translation by Google Translate, not legally binding)

Description

Relief flow regulator.

Scope and prior art

The invention generally relates to a relief flow regulator in tanks and ponds for rainwater treatment.

As is known, in the different structures of regulation, detention and retention of rainwater, for example the first wash storm tanks of a unitary system and for example, the rain treatment tanks, such as storm rafts or tanks Compact storm in the case of separative systems, the regulation of the relief flow against water inflows produced in the system is considered as a hydraulic problem, since the structure cannot be fed more than by a limited maximum flow in order to obtain a minimum of sedimentation and that the deposited sediment is not resuspended by the water entering the structure. Thus, for a structure called transit, that is, a structure in which a settling of particles or non-floating objects takes place, a horizontal speed of 10 m / h inside the structure and an average traffic speed of 5 cm / s (Stock sedimentation law of submerged particles in
Water).

You are currently unsolved this flow regulation problem that must be alleviated against a water entry into the system, resulting in structures (usually storm tanks) less effective than which is the volume built.

Summary of the invention

The invention aims at the development of a relief flow regulator that allows solve the problem of the necessary limitation of the flow of relief in a tank / tank for rainwater treatment, such as a storm tank for detention or water retention dirty. Additionally, another subsidiary objective of the invention is to achieve retention of particles or objects Floating in the tank.

This objective is achieved through the characteristics indicated in claim 1. Other advantages and objectives are achieved through the characteristics indicated in the pending claims.

A relief flow regulator is provided to establish relief openings in tanks / tanks pluvial treatment that are arranged transversely, occupying the width of said tank / tank, which according to the invention is characterized in that in each relief opening is A regulation device with:

- a fixed lower portion with a surface frontal, forming an inclined plane with respect to the water level in the deposit that extends across the entire width of the relief opening and which determines a lower level of said relief opening; Y

- a plate-shaped upper portion provided for flectar and arranged inclined upstream of the cited fixed lower portion and having an upper limb fixed and a lower limb that is operatively faced with the front surface of the fixed lower portion, so that between the front surface of said lower portion and the lower end of the upper plate is determined a groove of relief for relief flow output and whose relief groove its amplitude varies depending on the level of water in the tank / tank upstream of the relief opening thanks to the flexion experienced by said upper plate when the water level increases above the lower level of the relief opening established by the upper end said lower portion.

According to an additional feature of the invention is advantageous that in the regulating device, the lower portion consists of two complementary pieces of sheet forming a cross section assembly essentially in V inverted with straight terminations that extend down and that serve to be fixed to a lower wall that determines the edge bottom of an existing relief window in the tank / tank for rainwater treatment; and that the top plate is intended as a sheet that is fixed with the help of a hardware at its upper end to an upper edge determining wall supior of the existing relief window in the tank / tank for rainwater treatment.

According to an additional feature of the invention is an advantage when a plate is provided generally Z-shaped baffle that at one end is fixedly mounted on the back of the upper wall of the relief window, so that its intermediate section is facing the upper end of the lower portion, making projected jet screen of relief flow and whose end free serves to direct perpendicularly down said jet.

According to another additional feature of the invention is an advantage when between the lower portion and the bottom wall of the relief window is mounted a gasket liquid tight.

Also according to the invention it turns out advantageous that the relief flow regulator is provided as a tube structure with a tube wall in which it is practiced at least one pair of longitudinal openings arranged facing either side of the tube structure and forming the aforementioned relief openings of the tank / pond of rainwater treatment and to each of whose openings an associated respective regulation device.

Still agree with another additional feature of the invention is an advantage when the tube structure, it is provided with respective longitudinal walls each of the which extends steeply from the bottom edge of the respective opening of the tube wall inwards forming an acute angle with the vertical median plane of the tube structure and whose inclined longitudinal wall forms the fixed lower portion of the respective regulatory device; while on the edge upper of the respective opening of the tube wall is fixed the upper extremity of the upper plate of the device regulation.

Also, according to the invention is advantageous that the tube structure is configured with a conduit delimited by the inner portion of the tube wall comprised between the inclined longitudinal walls used to channel The relief flow.

Stainless steel turns out to be a material of advantageous use for regulator components according to the invention.

Experts will appreciate that in a relief regulator device according to the above The following considerations apply.

Usually the deposit, for example a clarifier storm tank will be designed in such a way that the relief flow regulator be arranged just below self-tilting cleaners usually used in these facilities that will clean the surface of the tank the pollutants that have not settled, once the rain.

The relief flow regulator will be located at a lower level than the emergency discharge of the deposit, but at a level higher than that of the food spillway retention tank (not shown) in the case of a connection lateral or offline (offline).

The relief opening length is calculated so that, for a maximum water level in the tank (corresponding to a discharge or relief upstream, which normally only happens for the most intense or lasting rains) the flow rate evacuated by the treatment tank is regulated to its nominal value, preventing the entry of a strong load or tromba of water that removes contaminants that have managed to settle for further treatment at the treatment plant once it ceases The rain.

It is important to keep in mind that for example in Storm clarifier tanks are not valid for any project in which the regulation and retention must be solved of rainwater, since its operation is conditioned by the type of rainwater that enters inside. Such is so that, clarifying storm tanks cannot be used to replace with first wash storm tanks (in which the "first-flush") is expected, that is, a storm tank clarifier should be used only when not expect a quick, sudden and loaded entry from many pollutants (mainly from collector deposits of connection) in unit systems. Speaking of systems unitary, the most frequent application of such structures is as storm tank of a medium / small town, at the end of a collector to which connections regulated by tanks of previous first wash storm or as last tank of storms before the treatment plant.

As far as separative systems are concerned, you can use the clarifier storm tank at any case.

With a regulator according to the above explained it is possible to achieve optimal operation of tanks clarification storm, achieving that within the structure always have a constant horizontal speed and thus allowing pollutants decant along the storm tank clarifier

The relief flow regulators according to The aforementioned can be supplied in pieces loose The rectangular opening in the concrete wall, or window of relief, it must have the required dimensions. The wall by Above and below the opening should be smooth, flat and vertical. The fixation of the equipment is done in existing work, by means of a spigot fixation.

As advantages of regulators according to previously explained, they can be mentioned among others:

- simple, economical and robust assembly without moving parts that may suffer wear;

- do not require an auxiliary measurement technique, nor maintenance (simply visual observation), nor energy Exterior;

- precise and safe operation;

- practically constant flow regulation with possibility of adjustment of subsequent flow;

- air entrainment (incorporation of O2) in the jet output and the already commented screen function against integrated floating;

- anti-corrosion and long life equipment for be able to provide all its parts in stainless steel.

Brief description of the drawings

Other features and advantages of the invention will result more clearly from the description that follows with the help of the attached drawings, referring to an example of execution non-limiting and in which:

Figure 1 illustrates a sectional view cross section of a relief flow regulator run according to the invention, installed in a tank / tank for rainwater treatment with at least one relief window preexisting.

Figure 2 shows a simplified scheme concerning the regulating device included in the regulator of relief flow according to figure 1.

Figures 3A to 3D are schematic views for illustrate the operation of the relief flow regulator of the Figure 1.

Figures 4A and 4B show so respective a flow chart through the regulator of the figure 1 and the graph of said relief flow as a function of the level of water in the reservoir, illustrating how almost a flow is reached constant regardless of the height of the water within the Deposit.

Figures 4C and 4D show a discharge of relief through an emergency relief wall of the tank without the relief flow regulator according to the invention.

Figure 5 partially illustrates a section longitudinal of a tank / tank for rainwater treatment which incorporates the regulator of figure 1.

Figures 6A and 6B show respective views. in perspective and cross section of a variant of the regulator of relief flow according to the invention.

Figures 7A to 7D illustrate so schematic the operation of the regulator shown in the figures 6A and 6B.

Figure 8 partially shows a section longitudinal of a tank / tank for rainwater treatment which incorporates the regulator of figures 6A and 6B.

Figure 9 shows a longitudinal view partially sectioned from a first wash storm tank which incorporates the relief flow regulator according to the Figures 6A and 6B to form a clarifier storm tank for rainwater sedimentation treatment.

Detailed description of a preferred embodiment

As shown in the figures, the regulator of relief flow, designated in general with reference 1, to install transversely to the length of a tank / tank to stormwater treatment D determining relief openings 2 which are arranged transversely occupying the width of said tank / pond and having each relief opening mounted 2 a regulating device 3.

As shown in figure 1 and in the scheme of principle of figure 2, the regulation device 3, is provided with a fixed lower portion 30 and an upper portion 31 in the form of a plate that is disposed upstream of said portion fixed.

The said fixed portion 30 configures a front surface 300 that forms an inclined plane with respect to the water level NA in reservoir D, and that extends through the entire relief opening width 2 determining its end upper the lower level h of said relief opening 2.

The upper portion or plate 31 is arranged inclined in front of said fixed lower portion and is intended as a plate with a fixed upper end 310 and a lower limb 311 operationally facing the surface front 300 of the fixed lower portion. In this way, between the front surface of said lower portion and the limb bottom of the plate a relief groove 4 is determined for the QA relief flow rate as will be explained in detail later in relation to figures 3A to 3D.

Through a proper choice of relationship between length l and thickness s of the plate forming the portion upper 31, this plate can flex with respect to its end fixed upper 310 against a load applied in the frontal direction such as exercised by the level of water present upstream to it, in this way, the relief slot 40 will vary its amplitude 40 in function of the height reached by level of water in front of the plate superior 31 thanks to flexion experienced by it, when the water level rises above the lower level h established by the upper end of said lower portion 30

Referring again to Figure 1 and in addition to figure 5, it can be seen that the flow regulator of relief 1, is mounted on a relief window VA bounded between a portion of bottom wall MI and a portion of upper wall MS of a tank / tank D. As depicted in the Figure 5, said relief window VA flows into a pipe AC located below said window to drain the flow relieved through her.

Although it is not an object of the invention in the figure 1 it can be seen that in the tank D upstream of the window of relief is provided an emergency relief wall MAE whose upper end is at a level greater than relief window 2 and referenced below for the purpose of comparison between the flow rate relieved through said emergency wall and the flow rate of relief through regulator 1 according to the invention.

Referring again to Figure 1, it can be seen that the lower portion 30 of the regulating device 3, is fixed by riveting to the bottom wall MI of the window of relief VA, while its portion or upper plate 31 is fixed at its upper end 310 to the upper wall of the window of relief as will be explained in detail later.

Additionally, Figure 1 shows that the lower portion 30 is constituted by two pieces complementary plates 301, 302. It can be seen that said plates they form a cross section assembly essentially in V inverted with straight ends 303 and 304 that extend towards below and that serve to be fixed by riveting to the bottom wall MI, as shown, piece 301 is ramp-shaped, being provided the other piece 302 as a support band so that the front surface 300 that forms part 301 is fixed forming An angle B with the horizontal.

As mentioned and represented in the Figure 1, the upper portion or plate 31 is provided as a sheet fixed by its upper end 310 to the upper wall MS by riveting with the help of a hardware 305 and is arranged extending inclined towards the front surface 300 of the piece 301 so that its free end 311 is separated from said front surface, delimiting the relief groove 4 between them. In this way with an adequate choice of the relationship between the length l and thickness s of the upper plate 31, as well as its constitutive material, said sheet may flect as a spring by an amount w (as indicated by the dashed line in the Figures 1 and 2), thus varying the amplitude 40 of said slot of relief 4.

To explain the operation of the regulator according to figure 1, additional reference is now made to the 3A to 3D figures.

As shown in Figure 3A when the level of water in the tank D is equal to or less than the height h determined by the upper end of the fixed lower portion 30, ie the highest part of piece 301 (see figure 1), through the relief opening 2 no discharge or flow of relief towards the AC channel shown in figure 5.

As seen by Figure 3B, when the level of water increases slightly above that height h, due to a rain of medium-high intensity or duration, the sheet 31 flexes reducing the amplitude 40 of the slot 4 and a little of water begins to be discharged to the CA channel or canalization of the Figure 5. If as shown in Figure 3C the water level continues increasing, the sheet 31 will flex further, further decreasing the amplitude 40 of the relief groove 4, in this way the water will be pouring out in the form of free jet through the groove of relief 4 now narrower.

As the water level within the tank D continues to increase, the amplitude 40 of the relief slot 4 opening remains constant (due to the limit of its angle of flexion w as shown in figure 2) and relief flow becomes independent of the level of water as it is He will explain below with reference to Figures 4A and 4B.

Figure 4A shows part of Figure 1 illustrating the relief flow rate QA through the regulating device 1 when the level of water existing upstream of the plate 31 increases As shown in Figure 4B as the dimension of the water level upstream of plate 31 increases, the flow increases gradually up to a Q1 value for an H1 dimension and from this level, the water flow rate just increases being the Q2 value for dimension H2, which is much greater than H1, just different from the value Q1, so that the relief flow rate QA becomes "almost" independent of the height reached by the water. For the purpose of comparison in figures 4C and 4D, a download is shown through of a wall of the tank D, for example the emergency relief wall MAE also represented in Figure 1, as can be seen from the Figure 4D the emergency flow discharged QE is continuously increasing with increasing water level unlike the regime achieved with the use of the flow regulator according to the invention.

As can be seen for example in Figures 3A a 3D when the water level rises inside the tank D, the upper plate 31 is submerged in the water and does the times of siphoid wall or screen against floating, thus retaining the floating bodies that are swept away by rainwater. Here, by an appropriate choice of the wall thickness MS and the inclination B with respect to the horizontal of piece 301 of the bottom portion 30, the height of immersion of the sheet 31, which is usually usually included between 50 and 100 mm.

On the other hand the quality and yields of the upper plate 31 is chosen such that under the curvature w, present have a virtually unlimited lifespan.

Referring to the 3D figure, it can be seen that optionally, if you do not want the outgoing free jet fall into the AC relief pipe (shown in figure 5) in arc shape in order to avoid noise or fogging or simply because you want to orient the water towards the ground, in the part rear of the upper wall MS a deflector plate can be arranged 306 generally in the form of Z that at one end 3060 is mounted fixedly by riveting on the back of the wall upper MS, so that its intermediate section 3061 faces to the upper end of the lower portion 30 making screen to the projected jet of the relief flow and whose free end 3062 serves to direct said jet down perpendicularly.

Referring now to figures 6A and 6B in a variant of the invention, the relief flow regulator 1, It is intended as a tube structure 5 to be installed transversely occupying the width of the treatment tank of stormwater D as shown in figure 8. Said structure of tube 5, it has a tube wall 50 in which it is practiced, when less, a pair of longitudinal openings 51 arranged facing each other and forming the aforementioned relief openings 2 of the rainwater tank / tank D and being associated to each of said openings a respective regulating device 3 with the arrangement shown in figure 2. It can be seen that the tube structure 5 is arranged with respective walls longitudinal 52 each of which extends slopingly from the edge of the respective opening 51 of the tube wall 50 inward forming an angle B with the vertical vertical plane PMV of structure 5, so that said longitudinal wall inclined 52 forms the fixed bottom portion 30 of the device respective regulator 3. Also, on the upper edge of the respective opening 51 of the tube wall 5, the upper extremity of the upper plate 31 of the device regulation 3.

Here as represented by figures 7A to 7D the operation of the flow regulator 1, is the same as the explained above for the case shown in figure 1, with the except that here it is possible to double the maximum capacity of the flow of relief, thanks to the couples of configured relief openings on either side of the tube structure 5, being here equally applicable all explained in relation to the operation of the device according to figure 1.

As can be seen additionally in the Figure 6B, in the tube structure 5, a duct 53 delimited by the inner portion of the tube wall 50 between the inclined longitudinal walls 52 which It serves to channel the relief flow.

A typical installation is illustrated in Figure 9 of a first wash storm tank that through the incorporation of a relief flow regulator according to the invention is transformed or adapted to constitute a tank installation of clarifying storms for water sedimentation treatment pluvial.

As shown in Figure 9, said installation, designated in general by reference 6, consists of a water tank D, a separation wall 7, a relief wall 8 which incorporates an anti-pollution screen and a relief flow meter (not shown), a relief channel of emergency 9 that flows into a channel 10, such as a river or the sea. It can be seen that tank D is provided with provision off-line, with respect to an input channel 11 and a dry chamber 12 for regulating the output flow to a station wastewater (WWTP); and additionally incorporates a tilting cleaner 13 arranged transversely to the tank D and which can run from its head to the relief wall 8, to drag particles and floating objects in said deposit.

As also shown in this figure 9, just ahead of the header position of the cleaner self-tilting 13, a relief flow regulator 5 as shown in the figures 6A and 6B. As also shown in said figure 9 the output of the flow regulator 5 flows into a relief channel 14 connected to channel 10. It can be seen additionally that installation 6 additionally consists of an operation and maintenance room fifteen.

I should still mention here that to build a clarifier storm tank should be maintained the following dimensions 10 <L / A <15; 3 <L / B <4'5; 2 <B / A <4 being L = Length, A = height and B = width of the tank.

As will be easily understood by the people versed in art, the above described is merely illustrative of a preferred embodiment of the invention of so that technical modifications of all kinds are possible and the invention should only be considered limited by the scope of The following claims.

Claims (8)

1. Relief flow regulator for establishing relief openings (2) in rain treatment tanks / ponds (D) that are arranged transversely occupying the width of said reservoir / pond, characterized by said relief flow regulator (1) by which in each relief opening a regulation device (3) is provided with: - a fixed lower portion (30) with a front surface (300), forming an inclined plane with respect to the water level (NA) in the reservoir that extends through the entire width of relief opening and that determines a dimension lower (h) of said relief opening; Y - a top portion (31) in the form of a plate provided for flectar and arranged inclined upstream of the cited fixed lower portion and having an upper limb (310) fixed and a lower limb (311) that is operatively facing the front surface (300) of the lower portion fixed, so that between said front surface (300) and said lower limb (311) a relief groove (4) is determined to a relief flow (QA) and whose relief groove varies its amplitude (40) depending on the water level in front of the relief opening thanks to the flexion experienced by said portion or upper plate (31) when the water level rises above the lower level (h) established by said lower portion (30). 2. Relief flow regulator according to claim 1, characterized in that in the regulating device (3): - the lower portion (30) is constituted by two complementary pieces of sheet metal (301, 302) that form a essentially cross-sectional set in inverted V with straight terminations (303 and 304) that extend down and that serve to be fixed by riveting to a lower wall (MI) that determines the lower edge of a relief sale (VA) existing in a reservoir / tank for rainwater treatment (D); Y - the upper portion (31) is provided as a sheet that with the help of a hardware (305) is fixed by its upper end (310) to an upper wall (MS) that determines the upper edge of said relief window (VA). 3. Relief flow regulator according to claim 2, characterized in that a deflector plate (306) is generally provided in a Z-shape which at one end (3060) is fixedly mounted on the back of the upper wall (MS) of the relief window (VA) so that its intermediate section (3061) faces the upper end of the lower portion (30) making the projected jet of the relief flow and whose free end (3062) serves to direct perpendicularly down said jet. 4. Relief flow regulator according to claim 2 and 3, characterized in that a liquid-tight seal (307) is mounted between the lower portion (30) and the lower wall (MI) of the relief window (VA) ). 5. Relief flow regulator according to claim 1, characterized in that it is provided as a tube structure (5) with a tube wall (50) in which at least one pair of longitudinal openings (51) is made. arranged mutually facing each other and forming the aforementioned relief openings (2) of the rain treatment tank / tank (DTP) and to each of whose openings a respective regulating device (3) is associated. 6. Relief flow regulator according to claim 5, characterized in that: - the tube structure (5) is provided with respective longitudinal walls (52) each of which is slopingly extends from the bottom edge (510) of the respective opening (51) of the tube wall inwards forming an acute angle (A) with the vertical median plane (PMV) of the tube structure (5) and whose inclined longitudinal wall (52) forms the fixed lower portion (30) of the regulating device (3) respective; Y - on the upper edge (511) of the respective opening (51) of the tube wall is fixed the upper extremity (310) of the upper portion or plate (31) of the device regulation (3). 7. Relief flow regulator according to claims 5 and 6, characterized in that a duct delimited by the inner portion of the tube wall (50) comprised between the inclined longitudinal walls (52) is configured in the tube structure. which is used to channel the relief flow (CA). 8. Relief flow regulator according to the preceding claims, characterized in that it is made of stainless steel.