Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
  • F16K37/0008—Mechanical means
  • F16K37/0016—Mechanical means having a graduated scale
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
  • F16K37/0058—Optical means, e.g. light transmission, observation ports

Definitions

• the invention relates to a naturalflußeinstellventil with a valve housing having a flow passage in which a throttle device is arranged with a handle by an externally adjustable throttle element, and with a digital display, which indicates a throttle position of the throttle element.
• Such congestive sinusinsteilventil is known for example from EP 0671 578 B1.
• the throttle element is designed as a ball element having a through-channel. The ball can be rotated from a position in which the passageway is aligned with the flow channel, to a position in which the passageway is substantially perpendicular to the flow channel. In this position, the fürflußeinstellventil is closed. Before and behind the throttle device branch measuring channels from the flow channel, which are in communication with measuring points where pressure sensors can be arranged.
• Such a flow control valve is used in liquid-operated systems, for example heating or cooling systems, in order to ensure a distribution of the liquid to different sections of the system.
• the throttle device is adjusted so that a certain flow is achieved.
• this flow also depends on the pressure prevailing in the relevant section of the installation.
• Another type of flow control valve uses the throttling device to generate the pressure drop by which the flow is detected. In this case, however, since the throttle device simultaneously throttles the fluid flow through the valve, the information about the pressure drop is not sufficient to make the correct adjustment of the flow. The operator or an evaluation device additionally requires the information about the throttle position of the
• Throttling element which conclusions can be drawn on the throttle resistance of the throttle device.
• a table is then used for the evaluation, in which a relationship between a setting of the throttle device and the pressure difference and the set flow can be removed.
• the display is provided which indicates the throttle position of the throttle element.
• Another type of cartridge valves therefore uses analogue displays, in which with the adjustment of the throttle element a mark is moved, which can then be compared with a scale in order to obtain the information about the throttle position of the throttle element.
• Such conflußeinstellventil is disclosed for example in DE 35 15 752 A1.
• digital displays have a certain advantage, because for each throttle position of the throttle element almost always a unique value can be read, which is indicated by a position symbol, usually a digit.
• the invention has for its object to facilitate the setting of a naturalflußeinstellventils.
• the ability to read the position symbol is considerably increased. Since the installer can look at the flow adjusting valve from different directions and still recognize the respective valid position symbol with high reliability, the installation position for the flow adjusting valve no longer plays such a large role. Basically, the fitter will always be able to look at a reading point in which the position symbol appears. Since the same position symbol always appears at all reading points, the same information is always obtained by looking at different points. The setting is thus considerably simplified.
• the handle is rotatable about an axis and at least three reading points are distributed in the circumferential direction about the axis.
• the handle is thus designed as a rotary handle which is rotatable about the axis 5. In this case, the installer must only have the option of being able to look laterally at the flow-adjusting valve, ie perpendicular to the axis, in order to be able to recognize the position symbol with a high degree of probability.
• At least one further reading point is directed parallel to the axis. This further enhances the recognizability.
• the position symbols are then practically readable from all the pages that are accessible anyway for the view of the fitter. The person skilled in the art will not want to look through the pipe or conduit to which the flow adjusting valve is mounted anyway.
• At least a part of the position symbols is arranged on a cylindrical surface, wherein these position symbols are divided into a plurality of axially offset groups, each of which has a reading point
• the reading point 25 is assigned, and the groups are circumferentially offset according to an angular distance of the reading points to each other. This allows the individual position symbols, for example the numbers already mentioned above, to be distributed on the cylindrical surface in such a way that the same number always appears in each reading point. If, for example, the reading
• 3 C are offset by 120 ° to each other, then you will arrange the individual groups of numbers in three rings, of which two successive rings are always offset by 120 ° to each other. One must just make sure that there is a clear reference to a ring of position symbols at each reading point.
• the cylindrical surface is formed by the peripheral surface of a drum, at the end face of which at least one further group of positional symbols is arranged. This makes it easy to realize the reading point, which can be viewed parallel to the axis.
• At least three reading points are formed as windows in a peripheral wall of the handle, wherein these windows are offset from each other in the circumferential and in the axial direction.
• a window forms a recess in the peripheral wall of the handle, wherein a window may well extend to the axial edge of the handle.
• Each window is so large that one can recognize a position symbol. It can also be larger in the circumferential direction. In this case, a mark is appropriate, which points to the respective valid position symbol.
• the Ablesestelle ⁇ are separated by projections.
• the projections facilitate the fitter to attack the handle. They form, so to speak, extended torque contact surfaces. The reading points, so the windows are protected between the
• the handle has a revolution counter.
• a revolution counter In addition to the information about the current angular position of the handle in a revolution then can also gain information about how many revolutions you have done with the handle already. However, a revolution counter need not be visible from all angular positions. Rather, it is sufficient if the revolution counter is visible once per revolution.
• the revolution counter has a counter wheel, which rotates further per revolution of the handle by a counting symbol division. For example, if the meter wheel has ten counting symbols to indicate ten revolutions of the handle, then the meter wheel rotates one tenth of a turn per revolution of the handle.
• a counting symbol on the peripheral surface of the counter wheel and a similar counting symbol on the front side of the counter wheel is visible.
• the counting symbols can be viewed, for example, through windows arranged in the wall of the handle.
• the counting symbols on the circumferential surface and on the front side of the handle must then be offset from one another in the circumferential direction only in the same way as the windows on the handle.
• Fig. 1 is a view of a fürflußeinstellventils, partially in
• Fig. 5 is an exploded view of a handle of Naturalflußeinstellventils and
• a Humanflußeinstellventil 1 has a valve housing 2, which surrounds a flow channel 3.
• a throttle device 6 is disposed between an inlet 4 and an outlet 5, which can change the free cross section between inlet 4 and outlet 5 by means of a throttle element 7.
• a first measuring connection 8 and behind the throttle device a second measuring connection 9 is provided in front of the throttle device 6, both depart from the flow channel 3.
• the measuring ports 8, 9 are led out to nozzle 10, 11.
• Each nozzle 10. 11 is normally closed by a closure flap 12, 13. After removing the protective caps 12, 13, pressure probes can be introduced into the nozzles 10, 11 in order to determine a pressure difference, which is established via the throttle device 6, when the flow channel 3 is traversed by a liquid, for example hot or cold water.
• a flow cross-section 14 is changed, which in turn determines the flow through the fürflußeinstellventil 1.
• the throttle element 7 is fixed to an adjusting spindle 15 having an external thread 16 which is in engagement with a corresponding internal thread 17.
• the internal thread 17 is attached to a part 18, which is held in the axial direction (relative to an axis 19 of the adjusting spindle 15) fixed in the valve housing 2.
• the throttle element 7 Upon rotation of the adjusting spindle 15 about the axis 19, the throttle element 7 is displaced parallel to the axis 19 and increases or decreases so that the flow cross-section 14 of the flow channel 3 in the region of the throttle device 6. 5
• a handle 20 is provided which has distributed in the circumferential direction a plurality of projections 21-23 to facilitate the application of torque.
• windows 24, 25, 26 are provided in the spaces between the projections, wherein a mark 27, for example an arrow, may be present on each window.
• the windows 24-26 are arranged in the circumferential direction of the handle 20 approximately 120 ° to each other. They are relative to the axis 19 in the axial direction to-5 offset each other.
• the drum 27 has on its circumferential surface three groups of numbers (each group contains the numerals 0-9), wherein the groups are offset in the axial direction just as the same as the windows 24-26. In the circumferential direction, the same numbers of the groups are offset to each other as far as the windows 24-26 in the handle 20. This ensures that in each rotational position of the handle 20 in all windows 24-26 the same number appears.
• a further group of digits 0-9 is provided on the front side of the drum 27, these digits being visible through a further window 29. The same number then appears in the window 29 as in the windows 24-26.
• the windows 24-26, 29 thus form readouts, these readout points can be seen in the direction of rotation of the handle 20 from three directions and additionally from a direction parallel to the axis 19. This allows an installer to recognize virtually any position in which angular position the handle 20 is located. This is a part of the information available to the installer needed to determine the throttle position of the throttle element 7.
• the installation position of naturalflußeinstellventils 1 is thus largely uncritical.
• the handle 20 still has a revolution counter with a counter wheel 30, which also has on its peripheral surface a number of Zählsymbolen, for example, again numbers from 0 to 9.
• corresponding counting symbols or numerals are also arranged on the front side of the counter wheel 30.
• the meter wheel 30 is rotatably mounted on a pin 31 of the attachment 28 and is connected via a transmission device shown only schematically by a toothing 32 with the handle 20 into engagement, so that the counter wheel 30 rotates per revolution of the handle 20 by a respective Zählsymbol-division on ,
• the handle has two more windows 33, 34. Through the window 33, the counting symbols on the peripheral side of the counter wheel 30 are seen. bar. Through the window 34, the counting symbols or digits on the front side of the counter wheel 30 can be seen.
• the window 33 is not always visible. But this is usually not necessary because it can be assumed that a fitter can remember the count symbol over a revolution of the handle 20, which appears in the window 33.
• the fitter will therefore first make a rough presetting position with the handle 20 by turning the handle until the throttle element 7 has reached a desired position. If, for example, 10 revolutions are necessary for the entire travel of the throttle element 7, then the fitter will turn the handle 20 five times to move the throttle element 7 approximately to a central position.
• the fitter can then make a fine adjustment, where he can win the information about the respective angular position of the handle 20 and thus also the axial adjustment of the throttle element 7 during this fine adjustment practically from all necessary viewing directions ,

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Indication Of The Valve Opening Or Closing Status (AREA)

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Citations (5)

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• 2006
  • 2006-10-10 DE DE102006047878A patent/DE102006047878A1/de not_active Ceased
• 2007
  • 2007-10-05 SE SE0900398A patent/SE532291C2/sv unknown
  • 2007-10-05 CN CN2007800380460A patent/CN101523103B/zh active Active
  • 2007-10-05 RU RU2009117287/06A patent/RU2395745C1/ru active
  • 2007-10-05 WO PCT/DK2007/000434 patent/WO2008043362A1/de active Application Filing

Patent Citations (5)

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