• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Flushing apparatus for cleaning a piping system (2) internally. The object of the invention is to achieve efficient cleaning without the use of equipment heavily overdimensioned in relation to the nominal flow through the piping system. According to the invention, use is made of a pump (4) having an operational pressure essentially higher than the pressure fall of the piping system at a turbulent flow, in combination with at least one pressure liquid accumulator (21). The flushing circuit includes at least one blocking valve (15, 15a) which is opened upon reaching intended (maximal) pressure, thereby producing a powerful flow pulse through the piping system (2).
    公开号:SU1588269A3
    申请号:SU4202161
    申请日:1987-03-20
    公开日:1990-08-23
    发明作者:Сундхольм Геран
    申请人:Гёран Сундхольм (FI)；
    IPC主号:
    专利说明:

    This invention relates to the cleaning of pipeline systems.
    The aim of the invention is to increase the productivity and quality of cleaning.
    FIG. 1 shows a diagram of a complete flushing unit; Fig. 2 illustrates the use of the hydraulic variant used during normal operation of the pipeline system; in fig. 3 is a circuit similar to the circuit shown in FIG. 1 and 2, with the exception of controls.
    A device for flushing pipeline systems has a flushing circuit 1 and a pipeline system 2, which is to be flushed.
    Flushing circuit 1 includes a washing fluid injection line, consisting of a drive motor 3, hydraulic pumps 4 and 5, each of which is equipped with safety valves 6 and 7, respectively. The terminals (under pressure) of the pumps ft} i 5 are designated by numbers 8 and 9, conventional shut-off valves are marked by numbers 10 and 11. The output of pipeline system 2 begins at connection 12, and the input of pipeline system ends at connection 13. On the drain line
    Hche
    the numeral U denotes a conventional op-out valve, the numerals 15 and 15a indicate each stop valve is open or closed by means of a control valve 16 and 1b (via intermediate valve 17 and 17a) to regulate the flow rate of the fluid (Open position) by the valves 16 and 1b. Digit 18 refers to a filter. When it is closed, the liquid is directed to the tank 19 of the assembly through the valve 20 parallel to the filter 18.
    At least one liquid pressure accumulator 21, consisting of a liquid volume 22, a gas volume 23 under a certain initial pressure, for example 10 bar, and a flexible membrane 24 separating the volume, are connected to outlet 8 and 9 of pumps 4 and 5, Pointers 13a, 14a., 18a and 20a show a line of filters parallel to the line of filters 13, 14, 18 and 20, but without a check valve, similar to what is shown by the number
    15.
    At nominal flow
    Bones The pressure drop in the existing piping systems typically stays in the order of 10 bar. The pump 4 operates at a much higher pressure, for example 50 bar, but has a relatively low output in the order of 20% of the nominal flow (about 2000 l / min) pipeline system 2.
    The device works the trace in a tremendous manner.
    At the start of the flushing operation, the Chba check valve is in the opposite position to the valve shown in FIG. 1, and 10
    20
    25
    45
    sets valve 15a to be in a closed position by applying pressure from pumps 4 and 5. When valve 15a is closed, battery 21 is filled with liquid until the pressure of the liquid in this battery is equal to the working pressure of pumps 4 and 5, which this case is in the order of 50 bar. At this stage, the valve 15a is open when the liquid pressure accumulator 21 is emptied, usually in. for one or two seconds, and the powerful liquid flow rushes through the pipeline system 2. The valve 14 is closed when the shut-off valve 15 is not in the circulation flow of the liquid and the flow passes through 1
    thirty
    40
    50
    0
    0
    five
    45
    rez filter 18a. When the battery is empty and the fluid flow is weakened, then the valve 15a closes again and the pressure begins to increase again. Thus the unit can be located. in working condition in any m omemt, when it is necessary to carry out a flushing of a large part of the pipe estimate from contamination - we are 2,
    After the first stage, the valve 14 opens and the valve 14a closes, the valve 15 is in the open state. The same operations are retained, however, valve 13 now functions as valve 15a. By quickly closing the valve 1 5 and interrupting the liquid impulse flow of the liquid in the pipeline system 2, a peak of pressure is reproduced exceeding three to four times the pressure of the pump 4 (i.e., about 200 bar). The valve 15 may be adapted to open and close several times during the passage of a powerful pulsed flow. The pressure peak can be oTperyju-i-tion by means of a flow control valve 17. Valves 16 and 1b can be valves controlled by solenoids, driven by adjustable timers, the time required to reach a pressure of 50 bar can be determined by the overflow valve 5. it is considered that a pressure of less than 50 bar is sufficient, then the appropriate time for creating such a pressure can be determined with a manometer. To empty the battery, the mutilator 21 can be determined using a M. meter in combination with valves 17 and 17a, which regulate the opening speed of the valves 15 and 15a.
    The timers (not shown) of the valves 16 and 16a are set to the time determined in a similar way, after which the 1shapans 6 and 16a automatically open and close the valves 15 and 15a during the respective stages of the washing process. The duration of this process can vary greatly - from one hour to a week - depending on the size of the pipeline system and the required degree of purity.
    The piping systems considered here often have a large volume, for example, on the order of 4000 liters. On
    0
    40
    50
    158826
    The second stage of the process, which has been described just now, can be fastened by a significant increase in the volume of lavatory used in the flush stream. Existing storage liquids typically have a volume in the order of 35 liters, of which about 20 are the effective volume. By using three parallel batteries, you can accumulate a volume of liquid in the order of 60 liters to create a mosquito wash stream. To open the accumulator 1j and unload the batteries (21), the pressure corresponding to the working
    five
    ten
    The pressure created by pump 4 is formed throughout the pipeline system 2, in this case around 50 bar. Despite the fact that in general fluids are considered not subject to compression, they are still subject to compression to a certain extent, on the order of 17 n 100 bar. If the volume of the piping system 2 is 4000 p-p, the difference in the volume of liquid inside will be about 20 liters, which is active from the outside. It is applied to a flush pulse in the chant of the invention, predetermined in FIG. 1, is one third of the volume of a liquid-accumulator battery.
    Consider an example of practical fluid flow used for flushing based on specified oas20
    25
    thirty
    - - v. /.J ii hch c1: 5 (-J
    pipe system measures
    9
    aso40
    45
    4, as well as a liquid pressure accumulator 21. When the valve l 5 opens, the batteries 18 oaz are loaded at a pressure difference of about 40 bar in 1–2 s. Typically, such batteries create a flow rate of about 900 l / min, in accordance with
    ; 7pp formed about 700. Additionally, as a result of the compression of the liquid inside the pipeline system 2, its image is about 30% or 900, “, taking into account the flow created by the pump 6 of about 350 l / min. Thus, the total pulse outflow is in the order of 000 L / min. The flow of impediments can be large, for example, by increasing the volume of the liquid-pressure accumulator batteries.
    Although installing a bolt valve b after passing through piping system 2 gives certain properties, it must be remembered that the UTO can be a consequence of such a fixture.
    35
    50
    h m mu tr
    akka about the option of this
    Fig So now can 3
    - -
    five
    ten
    The fact that the flushing fluid with contaminating particles will pass through the cut-off valve 12 and the valve may be jammed. For this reason, the valve 15 is disconnected when the dust is removed: the vital part of the contaminating particles in the first stage, as described earlier. Therefore, pressure peaks are created that reach the rated working pressure of the pipeline.
    G If G T. ,)
    system 2 at time
    second tragedy

    20
    25
    thirty
    40
    five
    35
    0
    stages of the washing operation, which are quickly expanded by the NPLT on the pipe walls of the pipeline system 2 to remove contaminating particles of the order of 1-25 microns of the surface structure. Alternatively, specifying the nominal pressure may be obtained by using a separate pump such as pump 5 (Fig. 1), in which case valve 2b opens to release valve b and pump 4.
    The imprint depicted in Fig. 2 is simplified by the use of a hydraulic unit 26, which is used in a blast furnace operation of the piping system, here it is shown only in schematic lines 27 and 28 What we count here is: number of replacements of parts the battery, the battery of the liquid pressure (battery start-up) and the filtering unit 30.
    The battery unit 29 includes three liquid pressure batteries 3, each of which has a liquid volume, a lawn volume, is located under a certain initial pressure, and a flexible membrane separating these volumes (Fig. 1). The shut-off valve J opens or closes control valves 33 and 34 in the same way as described. Filter 30 includes two pairs of pleated filters 35, which makes it possible to replace them without interrupting the flushing process. The hydraulic unit b, battery assembly 29, piping system 27 and 28, and filter unit 30 can be interconnected by flexible hoses (pipes) 36-39.
    In principle, the operation of the device of FIG. 2 is similar to its operation in FIG. 1. Thus, an additional stop valve, similar to valve 32, can be installed between the filters 35. In principle, valve 15a (Fig. 1)
    and valve 32 (FIG. 2) may not be installed if the same valves are installed before the filters.
    The device of FIG. 3 operates similarly to the device of FIG. 1 and 2, except for the control of the shut-off valve. When the pressure in the pressure line of the pump 40 rises and in the liquid pressure accumulator 41 to the limiting value of the valve 42, for example 50 bar, the valve D2 opens and the fluid flows through what. As a result, the pressure drops in line 43, which causes the valve 44 to open, and the flushing pulse enters the pressure line AZ of the pipeline system, as well as the flow created by the pump. When the pressure in the accumulator 41 drops, for example, by 30%, the valve 42 closes and the pressure begins to rise again, closing the shut-off valve 44. This process continues until the shut-off valve 46 is opened and the fluid battery has stopped. The pressure relief valve 47 serves to block the valve 44 to protect the battery 41 from overpressure.
    In addition to the initial washing operations, the proposed device can be used to flush piping systems during normal operation.
    Formula
    3 o b ete n i
    权利要求:
    Claims (6)
    [1]
    1. A device for flushing piping systems containing flushing
    0
    five
    thirty
    35
    40
    a coolant circuit including a pumping fluid injection line with means for fixing it to the system being flushed, a pump and a liquid pressure accumulator and a washing liquid drain line, characterized in that it is equipped with a shut-off valve installed in the flushing circuit a valve with a means for periodically opening it in the course of the flushing, while a liquid pressure accumulator is installed between the pump and the means for securing the injection line washing liquid to the washable 11 system.
    [2]
    2. The device according to claim 1, characterized in that it has additional liquid pressure accumulators arranged parallel to one another,
    [3]
    3. The device according to claim i, from which is due to the fact that the shut-off valve is installed in the main line of the washing liquid.
    [4]
    4. The device according to claim 1, about tl to which the shut-off valve is installed in the supply line of the washing liquid.
    [5]
    5. The device according to claim 1, characterized in that it is provided with an additional shut-off valve,
    and the valves are installed in the main line for injection and draining of the washing fluid to it.
    [6]
    6. The device according to claim 1, wherein the supply line for the washing liquid is provided with an additional pump installed in parallel to the main one.
    72
    1
    588269
    FIG. g
    7
    L
    one.
    FIG.
    thirty
    P
    W
    five
    with W
    42
    L
    .
    d
    W
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1588269A3|1990-08-23|Arrangement for flushing pipeline systems
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    同族专利:
    公开号 | 公开日
    EP0267908B1|1990-10-31|
    NO871142D0|1987-03-19|
    NO169823C|1992-08-12|
    AU6137286A|1987-02-10|
    AU585637B2|1989-06-22|
    YU129986A|1990-10-31|
    GB2199915B|1989-10-18|
    FI860340A|1987-07-25|
    KR940004788B1|1994-06-01|
    FI852846A0|1985-07-22|
    KR870700417A|1987-12-29|
    FI76935B|1988-09-30|
    BE905120A|1986-11-03|
    FI76936B|1988-09-30|
    CN1009805B|1990-10-03|
    EP0267908A1|1988-05-25|
    DE3675393D1|1990-12-06|
    JPS63500293A|1988-02-04|
    US4874002A|1989-10-17|
    FI860340A0|1986-01-24|
    AT57857T|1990-11-15|
    JPH0753268B2|1995-06-07|
    FI852846L|1987-04-22|
    ES2000710A6|1988-03-16|
    GB8801206D0|1988-03-16|
    NO169823B|1992-05-04|
    CN86104751A|1987-01-21|
    NO871142L|1987-03-19|
    DD248520A5|1987-08-12|
    FI76935C|1989-01-10|
    FI76936C|1989-01-10|
    DE3623951A1|1987-01-22|
    CA1273162A|1990-08-28|
    WO1987000455A1|1987-01-29|
    GB2199915A|1988-07-20|
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    法律状态:
    2006-01-20| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: PC4A Effective date: 20051101 |
    优先权:
    申请号 | 申请日 | 专利标题
    FI852846A|FI76935C|1985-07-22|1985-07-22|Coil assemblies.|
    FI860340A|FI76936C|1985-07-22|1986-01-24|Device for flushing hydraulic pipe systems or the like.|
    PCT/FI1986/000078|WO1987000455A1|1985-07-22|1986-07-07|Apparatus for flushing a piping system|
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