DE102008022316A1 - Measuring parameters in storage structure, comprises admitting physical parameters of hydromechanical control loop into throttle member and determining the parameters associated with amount of water accumulated in structure - Google Patents

Abstract

The method comprises admitting physical parameters of a hydromechanical control loop into a throttle member (10), and determining the parameters associated with the amount of water accumulated in a storage structure (12). The initial storage level in the storage structure is determined. The flow parameters are determined by the throttle member. Internal force, acceleration force, oscillations and impulse force are admitted as the physical parameters of the hydromechanical control loop. Independent claims are included for: (1) a measuring device; and (2) a throttle member.

Description

The The invention relates to a method for measuring or determining Sizes in a memory structure, where too related or to be determined stand with the amount of water dammed in the storage structure. The The invention further relates to a measuring device and a throttle member to carry out the process presented.

In Storage structures are amounts of dirty water, mixed water and / or Surface water cached to this time-delayed and, as needed, a purification stage in a sewage treatment plant or to be able to supply the water cycle. For the proper operation of the storage structure is it is appropriate, certain sizes, those associated with that stored in the memory structure Amount of water to be determined.

So is u. a. a preferably continuous measurement of the discharge amount from, for example, mixed, dirty or rainwater from a storage structure, especially in a dry weather phase, appropriate. Furthermore, it should be possible, the storage height in the storage structure, especially in the case of a rain event, to determine.

The usual are measuring devices used for measuring the discharge amount separately upstream or downstream of the throttle bodies and need a to the installation space of the throttle body additional Spatial and structural expenses, such as an IDM shaft with calming section and a culvert structure, a Venturi gutter etc.

The Measuring device for determining the height of infeed is regular housed in the storage building itself. This is usually either via an ultrasonic probe near the ceiling or a pressure probe near the bottom of the storage structure determined. However, it should be noted that to an ultrasonic height measuring device to use the height of the memory structure at least the height of the ultrasonic sensor plus the procedural block distance is higher than the maximum to be expected water levels. These are in most Falls more than 0.5 m, which is additionally required are.

The Use of a pressure probe near the bottom is in mixed water fundamentally problematic, as these change over time and / or in the short term can clog and then faulty or at all no measured values.

From the publication DE 197 48 216 A1 For example, a drainage system with a sewage treatment plant is known, which has at least one device arranged therein for flow adjustment by changing an overflow height.

The publication DE 198 48 770 A1 describes an apparatus and method for detecting changes in the amount of liquid in a channel or storage system. In these, a buoyant body is introduced into a test shaft and immersed there at least partially in liquid. In this case, the buoyant body is coupled via a power transmission with a weighing device, which in turn detects a force exerted by the buoyancy actuating force.

A sensor pendulum holder, which comes for use in flowing, polluted measuring media, such as. In sewage channels, is in the document DE 35 18 870 A1 described. The presented sensor is fastened at the lower end of a freely suspended swinging arm about an axis. By tilting the pendulum arm in the area of the sensor attachment and by attaching a counterweight, the sensor dips into the medium during operation with a maximum angle of 50 ° to the horizontal, so that impurities can slide off and can not accumulate.

The inventive method is used for the measurement of Sizes in a memory structure related stand with the amount of water dammed in the storage structure. The means, these are sizes, in particular physical quantities that are indicative of the Amount of water, such as the water level or the water level or to change the water level. Thus, for example, the discharge rate or the flow or the Flow rate can be determined by a throttle body.

This Throttle body serves to drain the amount from the storage structure to control or regulate by flowing through the throttle body water. The invention is characterized by the fact that in a throttle body with a measuring device a physical size a hydromechanical circuit, in particular a hydromechanical Loop is recorded. Based on this recorded physical Size is the storage height in the storage structure, d. H. the size associated with the amount of water is, certainly.

The hydromechanical circuit or control loop contains the amount of water contained in the storage structure with the Zuflüs sen and drains, that is, the throttle bodies as mechanical components in this cycle. With this cycle or control loop, the outflow quantity is regulated from the storage structure. In this case, a size of the hydromechanical circuit is now recorded in at least one of the provided throttle bodies or even in all throttle bodies.

The presented measuring device is used in a throttle body a memory structure and serves to accommodate a size hydromechanical circuit used to determine a size, those associated with that stored in the memory structure Amount of water is used, is used. This can, for example, the storage height or water level or an outflow quantity.

Consequently the measuring device is integrated in a throttle body, the example. regulates the discharge rate from the storage structure. It will not work to commercial or industry standard flow rate or Pressure gauges resorted to in addition be installed to the throttle body.

It In contrast, internal forces are generated at suitable points of the throttle body, Accelerations, loads and moments as well as vibrations of the hydromechanical Loop taken from which conclusions For example, on the flow rate and the upcoming water pressure or gained the storage height in the upstream storage structure can be.

In Embodiment are force, torque, strain and / or pressure cells arranged on the throttle body, both within the mechanical Lever mechanism of the throttle body as well as in places where by the deflection or the change in direction of the water or of water currents at the throttle organ impulse forces arise. Weiherhin can via hydrostatic measuring cells determines the flow in the cross section of the throttle body become.

It can also by equipping the throttle body with acceleration and / or vibration sensors at appropriate Positions and corresponding evaluation as well as combination of the signals further information, such as about water pressure, flow velocity, and other important parameters are obtained directly on the throttle body.

The described measuring device is used in particular for implementation of a method explained above and is in one Arranging throttle body of a memory structure and includes at least a measuring cell. If several measuring cells are provided, then these are provided at different, suitable locations in the throttle body be. As measuring cells cells for force measurement, moment measurement, Strain measurement, vibration measurement, motion measurement and / or acceleration measurement be provided.

The presented measuring device has at least in the featured Embodiments provide a number of advantages, namely a simple and robust measuring technique without great Effort can be retrofitted, and very accurate, repeatable Measurement results achieved.

The throttle device according to the invention comprises at least a measuring device of the type described above and kommmt in particular in the performance of the process described for Commitment.

at The throttling device can be provided that at least one measuring cell within a mechanical lever mechanism of the throttle body and / or is arranged at a position at which by deflection or change in direction of the water at the throttle organ impulse forces arise.

Further Advantages and embodiments of the invention will become apparent from the Description and attached drawing.

It it is understood that the above and the following yet to be explained features not only in each case specified combination, but also in other combinations or can be used in isolation, without the scope of the present To leave invention.

The Invention is based on an embodiment in the Drawing schematically illustrated and will be referred to below described in detail on the drawing.

1 shows an embodiment of the presented throttle body in a schematic representation.

2 shows a further embodiment of the throttle body also in a schematic representation.

The in the 1 illustrated embodiment of the throttle body is total with the reference numeral 10 provided and is referred to as a scale throttle.

The illustration shows a memory structure 12 , a throttle body 14 a hill 16 , a wine trough 18 , a radiant sheet 20 , a throttle shaft 22 , a four-link transmission 24 , a segment contactor 26 and a rule weight 28 , The rule weight 28 is in an upper position 28a and one lower position 28b shown. In the upper position is the segment contactor 26 closed. In the lower position 28b is the segment contactor 26 open.

In the illustrated throttle body 10 water flows from the storage structure 12 through the throttle body 14 where there is a jump 16 and then, depending on the water pressure, directly on the gutter gutter 18 falls or over the radiant panel 20 deflected as a free jet on the gutter gutters 18 meets and from there into the channel of the throttle shaft 22 crashes and then flows into the wider sewer network. Here are the by the weight and / or the radiance of the water in the Wiegerinne 18 initiated forces at the throttle body 10 via the four-bar mechanism 24 directly mechanically to the segment contactor 26 directed. This segment contactor 26 then sets as an actuator the flow cross-section corresponding to the at the control weight 28 predetermined discharge amount.

In practical application is now in a suitable place 30 into the mechanical connection between the gutter gutter 18 and the four-bar linkage 24 For example, a force measuring cell (not shown) is looped in, which is the weighing or the continuous absorption of force and the picking up of a measuring signal at a point or a point 30 allows the throttle body, with the forces occurring there directly inferences on the current flow and / or the storage height in the memory structure 12 can be pulled. The spot 30 is shown only as an example. Other places can be used. It is thus a size of the hydromechanical control loop in the throttle body 10 measured and then used to determine sizes of the storage structure 12 , such as the flow rate and the storage height in the storage structure 12 , used.

In 2 a further embodiment of the throttle body is shown, the whole with the reference numeral 40 is provided and is referred to as a jet throttle.

The illustration shows a memory structure 42 , a throttle body 44 a curved hill 46 , a radiant sheet 48 , a channel 50 , a lever mechanism 52 , a segment contactor 54 and a rule weight 56 ,

In the throttle device shown 40 the water flows out of the storage structure 42 also through the throttle body 44 , the curved hill passes 46 and flows especially in dry weather in the free-flowing ladle without bottoming in the further sewer.

In case of a jam in the storage structure 42 That is, at an increased water pressure, the jet is from the hill 46 first deflected upward, hits approximately tangentially on the curved radiant panel 48 and from there as a deflected free jet again in the continuing channel 50 , The by the change of direction of the water in the radiant panel 48 initiated impulse force is also at the illustrated jet throttle 40 over the lever gear 52 directly mechanically to the segment contactor 54 forwarded, then the flow cross section corresponding to the at the control weight 56 preset discharge rate.

It will be in one or more suitable places 58 of the throttle body 40 arranged a pressure or load cell. For example, from the curved hill 46 a sheet of curvature in some way "cut out" and then elastically sealed and reinserted so that it acts as a cantilevered portion of the hill 46 can work. This section is then supported on its rear side on a load cell (not shown) as a load cell, so that in dry weather flow of the flow height corresponding static pressure of the water can be measured and in congestion caused by the change in direction of the water jet force are tapped directly can, which is proportional to the speed and thickness (mass) of the water jet.

Alternatively or additionally, for example, between the jet plate 48 and the lever gear 52 a means for measuring force can be arranged, which receives the force generated by the water jet.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 19748216 A1 [0007]
• - DE 19848770 A1 [0008]
• - DE 3518870 A1 [0009]

Claims (16)

Method for measuring quantities in a memory structure ( 12 . 42 ) associated with that in the memory structure ( 12 . 42 ) are blocked, in which in a throttle body ( 10 . 40 ) at least one physical variable of a hydromechanical control loop is recorded, on the basis of which the size associated with that in the memory structure ( 12 . 42 ) stored amount of water is determined. Method according to Claim 1, in which the outflow quantity through the throttle element ( 10 . 40 ) is determined. Method according to Claim 1 or 2, in which the level of infeed in the storage structure ( 12 . 42 ) is determined. Method according to one of claims 1 to 3, where as the physical size of the hydromechanical Control loop an internal force is absorbed. Method according to one of claims 1 to 4, where as the physical size of the hydromechanical Control loop an acceleration is recorded. Method according to one of claims 1 to 5, where as the physical size of the hydromechanical Loop is added a vibration. Method according to one of claims 1 to 6, where as the physical size of the hydromechanical Control loop impulse power is added. Measuring device, in particular for carrying out a method according to one of claims 1 to 7, in a throttle body ( 10 . 40 ) of a storage structure ( 12 . 42 ) and which comprises at least one measuring cell. Measuring device according to claim 8, which is a measuring cell for force measurement. Measuring device according to claim 8 or 9, which is a Measuring cell for torque measurement includes. Measuring device according to one of claims 8 to 10, which includes a measuring cell for strain measurement. Measuring device according to one of claims 8 to 11, which includes a measuring cell for acceleration measurement. Measuring device according to one of claims 8 to 12, which includes a measuring cell for pressure measurement. Throttle body for a storage structure ( 12 . 42 ) with a measuring device according to one of claims 8 to 13. Throttle body according to Claim 14, in which at least one measuring cell within a mechanical lever mechanism of the throttle body ( 10 . 40 ) is arranged. Throttle body according to claim 14 or 15, wherein at least a measuring cell is arranged at at least one location at the by deflection or change in direction of the water at the Throttle organ impulse forces arise.